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computers / comp.mobile.android / Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

SubjectAuthor
* Battery charge tests - running a battery to 0 frequently - checking re-charge tiAndy Burnelli
+* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
|`- Re: Battery charge tests - running a battery to 0 frequently -sms
+* Re: Battery charge tests - running a battery to 0 frequently -John McGaw
|+* Re: Battery charge tests - running a battery to 0 frequently -AJL
||`- Re: Battery charge tests - running a battery to 0 frequently -Jolly Roger
|`- Re: Battery charge tests - running a battery to 0 frequently -Jolly Roger
`* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 +* Re: Battery charge tests - running a battery to 0 frequentlyChris
 |+* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 ||`* Re: Battery charge tests - running a battery to 0 frequently -John McGaw
 || +* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |`* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || | `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |  `* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |   `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |    `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |     +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |     `* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |      +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |      `- Re: Battery charge tests - running a battery to 0 frequently -Lewis
 || `- Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 |+* Re: Battery charge tests - running a battery to 0 frequently -sms
 ||+- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 ||+- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 ||`* Re: Battery charge tests - running a battery to 0 frequently -Jolly Roger
 || `* Re: Battery charge tests - running a battery to 0 frequently -Wade Garrett
 ||  +* Re: Battery charge tests - running a battery to 0 frequently -Jolly Roger
 ||  |`- Re: Battery charge tests - running a battery to 0 frequently -Wade Garrett
 ||  +* Re: Battery charge tests - running a battery to 0 frequently -sms
 ||  |`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 ||  `- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 |+* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 ||+* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 |||`* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargAndy Burnelli
 ||| `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 |||  +* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 |||  |`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargAndy Burnelli
 |||  +* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargClifford Heath
 |||  |`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargAndy Burnelli
 |||  `- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargAndy Burnelli
 ||+* Re: Battery charge tests - running a battery to 0 frequently -Jolly Roger
 |||`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 ||`* Re: Battery charge tests - running a battery to 0 frequently -sms
 || +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || +* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |+* Re: Battery charge tests - running a battery to 0 frequently -AJL
 || ||`* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || || +- Re: Battery charge tests - running a battery to 0 frequently -AJL
 || || `* Re: Battery charge tests - running a battery to 0 frequentlyChris
 || ||  +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || ||  +* Re: Battery charge tests - running a battery to 0 frequently -sms
 || ||  |`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargmike
 || ||  `- Re: Battery charge tests - running a battery to 0 frequently -AJL
 || |+* Re: Battery charge tests - running a battery to 0 frequently -sms
 || ||`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |+- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |`* Re: Battery charge tests - running a battery to 0 frequently -Bob F
 || | `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |  `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |   `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |    +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |    `* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |     +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |     `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |      `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |       `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |        +* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        |`* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |        | +* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | |`* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |        | | +* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |        | | |+- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | |`* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |        | | | +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | | +* Re: Battery charge tests - running a battery to 0 frequently -Lewis
 || |        | | | |`- Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |        | | | `* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |        | | |  `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |        | | |   +* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |        | | |   |`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | |   +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | |   `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |        | | |    +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |        | | |    +* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |        | | |    |`- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |        | | |    `* Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 || |        | | |     +* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |        | | |     |`* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | |     | `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |        | | |     |  +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | |     |  `* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |        | | |     |   `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargJeff Liebermann
 || |        | | |     |    `* Re: Battery charge tests - running a battery to 0 frequently -sms
 || |        | | |     |     `- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | |     `- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | +- Re: Battery charge tests - running a battery to 0 frequently - checking re-chargnospam
 || |        | | +- Re: Battery charge tests - running a battery to 0 frequently -Lewis
 || |        | | `- Re: Battery charge tests - running a battery to 0 frequently -Bob F
 || |        | `- Re: Battery charge tests - running a battery to 0 frequently -Lewis
 || |        `- Re: Battery charge tests - running a battery to 0 frequently -Lewis
 || +* Re: Battery charge tests - running a battery to 0 frequently -sms
 || `- Re: Battery charge tests - running a battery to 0 frequently -Carlos E.R.
 |`- Re: Battery charge tests - running a battery to 0 frequently -Jolly Roger
 `* Re: Battery charge tests - running a battery to 0 frequently - checking re-chargAndy Burnelli

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Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

<070520221058333874%nospam@nospam.invalid>

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From: nos...@nospam.invalid (nospam)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times
Date: Sat, 07 May 2022 10:58:33 -0400
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 by: nospam - Sat, 7 May 2022 14:58 UTC

In article <t560il$r56$1@dont-email.me>, Chris <ithinkiam@gmail.com>
wrote:

> > Drivel:
> > One mouse, two mice.

mouses is an acceptable plural when referring to a computer mouse. not
applicable to the rodent.

<https://www.merriam-webster.com/dictionary/mouse>
plural also mouses : a small mobile manual device that controls
movement of the cursor and selection of functions on a computer
display

> > One house, two hice?
>
> An upper class english accent pronounces a house as "hice". English is a
> bastard language with so many accents and vernaculars that it's pointless
> arguing over what is "correct".

true.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: scharf.s...@geemail.com (sms)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
checking re-charge times
Date: Sat, 7 May 2022 08:01:47 -0700
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 by: sms - Sat, 7 May 2022 15:01 UTC

On 5/7/2022 7:43 AM, Chris wrote:
> Jeff Liebermann <jeffl@cruzio.com> wrote:
>>
>> Drivel:
>> One mouse, two mice.
>> One house, two hice?
>
> An upper class english accent pronounces a house as "hice". English is a
> bastard language with so many accents and vernaculars that it's pointless
> arguing over what is "correct".

I have two close friends that moved from England to California. After a
couple of decades in the U.S. they learned to speak proper English, but
they occasionally slipped up.

When they first moved to the U.S. there were some embarrassing/amusing
incidents, one involving trying to buy pencil erasers at Walgreen's, and
one involving the item used for washing pots and pans, while on a
backpacking trip.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

<t561lg$41r$1@dont-email.me>

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From: noem...@none.com (AJL)
Newsgroups: comp.mobile.android
Subject: Re: Battery charge tests - running a battery to 0 frequently -
checking re-charge times
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 by: AJL - Sat, 7 May 2022 15:02 UTC

On 5/7/2022 7:43 AM, Chris wrote:

> An upper class english accent pronounces a house as "hice".

Usage and pronunciation are different things.

> English is a bastard language with so many accents and vernaculars
> that it's pointless arguing over what is "correct".

Much of the DISCUSSION here is pointless. But it IS often entertaining...

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: scharf.s...@geemail.com (sms)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
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 by: sms - Sat, 7 May 2022 17:12 UTC

On 5/7/2022 7:02 AM, sms wrote:
> On 5/6/2022 10:07 AM, sms wrote:
>
> <snip>
>
>> If the choice is only between a) "fast charge at high-current to 100%
>> capacity" versus b) slow-charge at low current to 100% capacity" then
>> yes, slow charging is better, but that's not how modern smart phones,
>> or modern electric vehicles, with lithium-based batteries actually are
>> charged.
>
> One other thing, which could be good or bad depending on your point of
> view, is that for iPhones that are capable of fast charging, if you turn
> the phone off _after_ the phone is plugged into a USB-C PC charger.

Oops, USB-C PD, not USB-C PC.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: thi...@address.is.invalid (mike)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times
Date: Sun, 8 May 2022 00:59:40 +0530
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 by: mike - Sat, 7 May 2022 19:29 UTC

On 07-05-2022 20:31 sms <scharf.steven@geemail.com> wrote:

> I have two close friends that moved from England to California. After a
> couple of decades in the U.S. they learned to speak proper English, but
> they occasionally slipped up.
>
> When they first moved to the U.S. there were some embarrassing/amusing
> incidents, one involving trying to buy pencil erasers at Walgreen's, and
> one involving the item used for washing pots and pans, while on a
> backpacking trip.

When a person makes a mistake like that, if you dislike them, it's
annoying, but if you like them, it's cute.

On the other hand, if you prefer speed x while driving and someone zooms by
at 2 x, they're an idiot but someone in front of you at 1/2 x is a jerk.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: bobnos...@gmail.com (Bob F)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
checking re-charge times
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 by: Bob F - Sat, 7 May 2022 20:02 UTC

On 5/6/2022 2:53 PM, Jeff Liebermann wrote:
> On Fri, 6 May 2022 10:07:35 -0700, sms <scharf.steven@geemail.com>
> wrote:
>
>> On 5/6/2022 7:53 AM, Jeff Liebermann wrote:
>>> On Fri, 6 May 2022 07:57:08 -0000 (UTC), Chris <ithinkiam@gmail.com>
>>> wrote:
>>>
>>>> Interesting to see it born out in practice, but it is a known fact. Fast
>>>> charging heats up the battery and heat damages the battery, therefore fast
>>>> charging will reduce the battery life.
>>>
>>> Nope, or at least not what I've seen with my testing (and screwing
>>> around). A few decades ago, I decided that NiCd cells would only
>>> become warm if over charged past 100%. Well, I was off a little but
>>> my thermocouple tests showed that up to about 75% of full charge, I
>>> could literally charge the NiCd cell at whatever sky high rate I found
>>> amusing. The problem was that if I missed and went over about 85% of
>>> full charge at the ridiculous rates I was using, the cell would
>>> generate enough gas and heat to blow the end out and generally make a
>>> mess.
>>
>> Ni-cad cells are less efficient when slow-charged (see
>> <https://batteryuniversity.com/article/bu-407-charging-nickel-cadmium>).
>
> "Where does it say that on the URL you mentioned? All I find is:
> To achieve a reliable voltage signature, the charge rate must be 0.5C
> and higher. Slower charging produces a less defined voltage drop,
> especially if the cells are mismatched in which case each cell reaches
> full charge at a different time point."
> In other words, the dip in terminal voltage that defines EOC
> (end-of-charge) is less obvious for a slow charge than for a faster
> charge. If the charge controller misses this dip, it could easily
> overcharge the NiCd battery and ruin it. There's nothing in there
> about "efficiency".
>

"Fast charging improves the charge efficiency. At 1C charge rate, the
efficiency of a standard NiCd is 91 percent and the charge time is about
an hour (66 minutes at 91 percent). On a slow charger, the efficiency
drops to 71 percent, prolonging the charge time to about 14 hours at 0.1C.

During the first 70 percent of charge, the efficiency of a NiCd is close
to 100 percent. The battery absorbs almost all energy and the pack
remains cool. NiCd batteries designed for fast charging can be charged
with currents that are several times the C-rating without extensive heat
buildup. In fact, NiCd is the only battery that can be ultra-fast
charged with minimal stress. Cells made for ultra-fast charging can be
charged to 70 percent in minutes."

https://batteryuniversity.com/article/bu-407-charging-nickel-cadmium

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

<9elkki-mlf.ln1@Telcontar.valinor>

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From: robin_li...@es.invalid (Carlos E.R.)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
checking re-charge times
Date: Sun, 8 May 2022 13:16:57 +0200
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 by: Carlos E.R. - Sun, 8 May 2022 11:16 UTC

On 2022-05-07 02:39, John McGaw wrote:
> On 5/6/2022 5:14 AM, Carlos E.R. wrote:
> snip...
>>> Interesting to see it born out in practice, but it is a known fact. Fast
>>> charging heats up the battery and heat damages the battery, therefore
>>> fast
>>> charging will reduce the battery life.
>>
>> It would be nice if when pluging the charger the phone asked whether
>> we want a fast or a slow charge.
>>
>>
>
> Actually, the "adaptive charging" option seems to do that but without
> asking. Place the phone on the wireless stand after the phone knows that
> it is "sleepy time" and it will automatically restrict the charge rate
> to what is needed to have 100% at the next alarm time. It has seemed to
> work fine for me on my Pixel 6 Pro, anyway. Of course you have to switch
> the option on in settings before it will know to do that. I'm guessing
> that this will work with plugged-in charging but I have never really
> tried and I almost never used wired charging except when in the car on a
> long road trip.
>

Yes, my phone does say it will end charging by alarm time.

--
Cheers, Carlos.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: robin_li...@es.invalid (Carlos E.R.)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
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 by: Carlos E.R. - Sun, 8 May 2022 11:21 UTC

On 2022-05-07 03:12, nospam wrote:
> In article <t54ghq$vhp$1@dont-email.me>, sms
> <scharf.steven@geemail.com> wrote:
>
>> If someone really wants to charge as slow as possible, with a wired
>> charger, you can use a data blocker and the charger will be unable to
>> communicate with the phone and will default to the lowest charge rate,
>
> which will be extremely slow and might even be insufficient to overcome
> idle demands of the device because it will be 5V@100ma, or 1/2 watt,
> assuming it works at all, since such adapters are non-compliant with
> the usb spec.
>
> a better and more practical solution is use a 5w/1a charger, which most
> people have.

Actually, my night charger does so at "1 load unit", and does the job
just fine.

--
Cheers, Carlos.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: robin_li...@es.invalid (Carlos E.R.)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
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 by: Carlos E.R. - Sun, 8 May 2022 11:29 UTC

On 2022-05-06 19:07, sms wrote:
> On 5/6/2022 7:53 AM, Jeff Liebermann wrote:
>> On Fri, 6 May 2022 07:57:08 -0000 (UTC), Chris <ithinkiam@gmail.com>
>> wrote:
>>
>>> Interesting to see it born out in practice, but it is a known fact. Fast
>>> charging heats up the battery and heat damages the battery, therefore
>>> fast
>>> charging will reduce the battery life.
>>
>> Nope, or at least not what I've seen with my testing (and screwing
>> around).  A few decades ago, I decided that NiCd cells would only
>> become warm if over charged past 100%.  Well, I was off a little but
>> my thermocouple tests showed that up to about 75% of full charge, I
>> could literally charge the NiCd cell at whatever sky high rate I found
>> amusing.  The problem was that if I missed and went over about 85% of
>> full charge at the ridiculous rates I was using, the cell would
>> generate enough gas and heat to blow the end out and generally make a
>> mess.
>
> Ni-cad cells are less efficient when slow-charged (see
> <https://batteryuniversity.com/article/bu-407-charging-nickel-cadmium>).
>
> NiMH cells are best charged using the "step-differential" method (see
> <https://batteryuniversity.com/article/bu-408-charging-nickel-metal-hydride>).
>
>
> It seems like many people want to believe that slow-charging batteries
> has some benefit in longevity and/or capacity, so you see statements
> like "it is a known fact...," even when the statements are really not true.

Well, I have been slow charging my previous phone during 4 years, and
battery life is almost the same as when I bought it. There was a
decrease or impact the first year or two, then none.

>
> If the choice is only between a) "fast charge at high-current to 100%
> capacity" versus b) slow-charge at low current to 100% capacity" then
> yes, slow charging is better, but that's not how modern smart phones, or
> modern electric vehicles, with lithium-based batteries actually are
> charged.

--
Cheers, Carlos.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: scharf.s...@geemail.com (sms)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
checking re-charge times
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 by: sms - Sun, 8 May 2022 13:52 UTC

On 5/8/2022 4:21 AM, Carlos E.R. wrote:
> On 2022-05-07 03:12, nospam wrote:
>> In article <t54ghq$vhp$1@dont-email.me>, sms
>> <scharf.steven@geemail.com> wrote:
>>
>>> If someone really wants to charge as slow as possible, with a wired
>>> charger, you can use a data blocker and the charger will be unable to
>>> communicate with the phone and will default to the lowest charge rate,
>>
>> which will be extremely slow and might even be insufficient to overcome
>> idle demands of the device because it will be 5V@100ma, or 1/2 watt,
>> assuming it works at all, since such adapters are non-compliant with
>> the usb spec.
>>
>> a better and more practical solution is use a 5w/1a charger, which most
>> people have.
>
> Actually, my night charger does so at "1 load unit", and does the job
> just fine.

nospam is wrong of course™.

You can charge at the very low rate by not letting the charger see the
resistors on the data pins.

There's no upside to charging at 100mA, just as there is no upside to
charging at 500mA or 1A, versus higher rate charging, but not everything
anyone does is necessarily based on actual data. You still have people
doing 3000 mile oil changes on new cars, not because they are necessary,
but because it makes them feel good.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times
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 by: nospam - Sun, 8 May 2022 14:20 UTC

In article <t58hup$esn$1@dont-email.me>, sms
<scharf.steven@geemail.com> wrote:

>
> You can charge at the very low rate by not letting the charger see the
> resistors on the data pins.

by not seeing the resistors (or actual negotiation), the 'very low
rate' is 100ma, as per the usb spec, which is insufficient to charge a
phone battery.

some devices will even say not charging:
<https://cdn-60c35131c1ac185aa47dd21e.closte.com//wp-content/uploads/201
8/04/iPad-Not-Charging-Message-300x136.png>

> There's no upside to charging at 100mA,

because it's too low to actually do anything.

> just as there is no upside to
> charging at 500mA or 1A, versus higher rate charging,

yes there is. the upside for charging at 500ma-1a versus faster rates
is longer battery life.

> but not everything
> anyone does is necessarily based on actual data.

you being the prime example of that.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: robin_li...@es.invalid (Carlos E.R.)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
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In-Reply-To: <080520221020145806%nospam@nospam.invalid>
 by: Carlos E.R. - Mon, 9 May 2022 11:07 UTC

On 2022-05-08 16:20, nospam wrote:
> In article <t58hup$esn$1@dont-email.me>, sms
> <scharf.steven@geemail.com> wrote:
>
>>
>> You can charge at the very low rate by not letting the charger see the
>> resistors on the data pins.
>
> by not seeing the resistors (or actual negotiation), the 'very low
> rate' is 100ma, as per the usb spec, which is insufficient to charge a
> phone battery.

Don't be that absolute. When you do that, you deserve getting the
«nospam is wrong of course™» response.

Some phones may not charge at that rate, others do.

I have one such cable with just two wires, and all of my devices (with
micro-usb connectors) can charge with it, except an old Samsung Galaxy
Mini 2 phone. That cable came with a BT headphone, probably with the
purpose of forcing slow, low rate, charging.

I have a charger with eight outputs. 2 of them are "1 load unit", same
as an old computer. They can charge all my phones, tablets, headsets,
cameras, etc. All of those with USB connection, that is. Except one,
that old Samsung phone.

So I intentionally use those two outputs to charge my phone while I
sleep, or other devices that I'm likely to forget I left charging.

I have been doing that to my previous phone for four years, the battery
is just fine.

>
> some devices will even say not charging:
> <https://cdn-60c35131c1ac185aa47dd21e.closte.com//wp-content/uploads/201
> 8/04/iPad-Not-Charging-Message-300x136.png>

Ah, an iPad. :-P

....

--
Cheers, Carlos.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: robin_li...@es.invalid (Carlos E.R.)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
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 by: Carlos E.R. - Mon, 9 May 2022 11:13 UTC

On 2022-05-07 22:02, Bob F wrote:
> On 5/6/2022 2:53 PM, Jeff Liebermann wrote:
>> On Fri, 6 May 2022 10:07:35 -0700, sms <scharf.steven@geemail.com>
>> wrote:

....

> During the first 70 percent of charge, the efficiency of a NiCd is close
> to 100 percent. The battery absorbs almost all energy and the pack
> remains cool. NiCd batteries designed for fast charging can be charged
> with currents that are several times the C-rating without extensive heat
> buildup. In fact, NiCd is the only battery that can be ultra-fast
> charged with minimal stress.

Lead-acid could be fast charged. They do that some times with cars on
garages. It is dangerous, the battery must be disconnected from the car
first, or the electronics can be destroyed (overvoltage). Happened to me.

> Cells made for ultra-fast charging can be
> charged to 70 percent in minutes."
>
> https://batteryuniversity.com/article/bu-407-charging-nickel-cadmium

--
Cheers, Carlos.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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 by: nospam - Mon, 9 May 2022 11:51 UTC

In article <4j9nki-1mr.ln1@Telcontar.valinor>, Carlos E.R.
<robin_listas@es.invalid> wrote:

>
> Lead-acid could be fast charged.

it can, but also reduces the life of the battery, depending on how fast
it is.

> They do that some times with cars on
> garages.

they do, because they want to move onto the next customer.

> It is dangerous,

only if improperly done.

> the battery must be disconnected from the car
> first, or the electronics can be destroyed (overvoltage). Happened to me.

the battery doesn't need to be disconnected.

modern car battery chargers initially supply a constant current until
the battery voltage rises to ~14.4v (bulk charge), at which point it
switches to constant voltage to top it off (absorption charge) until
the current draw is minimal, and then switches to trickle charging (aka
float).

when the vehicle is running, the voltage is ~13.8v with a fully charged
battery (higher if it's not).

chargers that do not limit voltage and/or current can destroy all sorts
of things, including the battery. do not use.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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 by: nospam - Mon, 9 May 2022 11:51 UTC

In article <289nki-7dr.ln1@Telcontar.valinor>, Carlos E.R.
<robin_listas@es.invalid> wrote:

> >> You can charge at the very low rate by not letting the charger see the
> >> resistors on the data pins.
> >
> > by not seeing the resistors (or actual negotiation), the 'very low
> > rate' is 100ma, as per the usb spec, which is insufficient to charge a
> > phone battery.
>
> Don't be that absolute. When you do that, you deserve getting the
> «nospam is wrong of course» response.

the usb spec is absolute, as are other specs.

the usb spec *requires* that a device initially source 100ma, with
higher rates only after negotiation. originally, that required a
request, but that was not practical for a simple charger, which is why
resistors were added to the spec.

if you disagree, take it up with the usb consortium.

> Some phones may not charge at that rate, others do.

the rate is defined by the usb spec.

non-compliant devices do exist, however, they should be avoided. there
is no guarantee what they will do.

compliance not only guarantees expected functionality and compatibility
between manufacturers, but also a level of safety.

> I have one such cable with just two wires, and all of my devices (with
> micro-usb connectors) can charge with it, except an old Samsung Galaxy
> Mini 2 phone. That cable came with a BT headphone, probably with the
> purpose of forcing slow, low rate, charging.

any cable with only two wires is non-compliant with the usb spec, and
if it came with a bt headphone, then that too is non-compliant.

you have a lot of non-compliant devices. that's unfortunate.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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 by: sms - Mon, 9 May 2022 16:10 UTC

On 5/9/2022 4:07 AM, Carlos E.R. wrote:
> On 2022-05-08 16:20, nospam wrote:
>> In article <t58hup$esn$1@dont-email.me>, sms
>> <scharf.steven@geemail.com> wrote:
>>
>>>
>>> You can charge at the very low rate by not letting the charger see the
>>> resistors on the data pins.
>>
>> by not seeing the resistors (or actual negotiation), the 'very low
>> rate' is 100ma, as per the usb spec, which is insufficient to charge a
>> phone battery.
>
> Don't be that absolute. When you do that, you deserve getting the
> «nospam is wrong of course™» response.
>
> Some phones may not charge at that rate, others do.
>
> I have one such cable with just two wires, and all of my devices (with
> micro-usb connectors) can charge with it, except an old Samsung Galaxy
> Mini 2 phone. That cable came with a BT headphone, probably with the
> purpose of forcing slow, low rate, charging.
>
> I have a charger with eight outputs. 2 of them are "1 load unit", same
> as an old computer. They can charge all my phones, tablets, headsets,
> cameras, etc. All of those with USB connection, that is. Except one,
> that old Samsung phone.
>
> So I intentionally use those two outputs to charge my phone while I
> sleep, or other devices that I'm likely to forget I left charging.
>
> I have been doing that to my previous phone for four years, the battery
> is just fine.

nospam is wrong of course™

You can charge a phone, albeit very slowly, at 100mA.

There's no good reason to do this, but someone else was concerned that
when you plug a phone into a fast charger there is no way to force it
charge at a lower rate. For an iPhone there is two ways a) turn off the
phone, b) use a power-only USB cable or a device that prevents the data
lines from being seen.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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From: robin_li...@es.invalid (Carlos E.R.)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
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 by: Carlos E.R. - Mon, 9 May 2022 17:03 UTC

On 2022-05-09 13:51, nospam wrote:
> In article <4j9nki-1mr.ln1@Telcontar.valinor>, Carlos E.R.
> <robin_listas@es.invalid> wrote:
>
>>
>> Lead-acid could be fast charged.
>
> it can, but also reduces the life of the battery, depending on how fast
> it is.
>
>> They do that some times with cars on
>> garages.
>
> they do, because they want to move onto the next customer.
>
>> It is dangerous,
>
> only if improperly done.
>
>> the battery must be disconnected from the car
>> first, or the electronics can be destroyed (overvoltage). Happened to me.
>
> the battery doesn't need to be disconnected.

nospam, don't talk of things you don't understand

Fast charging a lead acid battery means supplying it with a high
voltage, maybe 20 or 30 volts, much more than what the battery can
absorb. If the car is not disconnected, that voltage reaches the car itself.

What you say now is trash:

>
> modern car battery chargers initially supply a constant current until
> the battery voltage rises to ~14.4v (bulk charge), at which point it
> switches to constant voltage to top it off (absorption charge) until
> the current draw is minimal, and then switches to trickle charging (aka
> float).
>
> when the vehicle is running, the voltage is ~13.8v with a fully charged
> battery (higher if it's not).
>
> chargers that do not limit voltage and/or current can destroy all sorts
> of things, including the battery. do not use.

--
Cheers, Carlos.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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 by: nospam - Mon, 9 May 2022 17:42 UTC

In article <t5bedb$8fo$1@dont-email.me>, sms
<scharf.steven@geemail.com> wrote:

> You can charge a phone, albeit very slowly, at 100mA.

extremely slowly (as in days), and it needs to be powered off because
idle power consumption is higher than 100ma.

if it's powered on, it won't actually charge, which is what causes the
no charging indicator to be shown on the display. link in another post.

> There's no good reason to do this, but someone else was concerned that
> when you plug a phone into a fast charger there is no way to force it
> charge at a lower rate. For an iPhone there is two ways a) turn off the
> phone,

except that the phone will turn on when connected to a charger (android
partly boots, iphone fully boots) and then will charge at whatever rate
the charger supports and negotiates with the device.

> b) use a power-only USB cable or a device that prevents the data
> lines from being seen.

that won't work. see above.

the correct way to charge at a slow rate is use a 2.5w (500ma) or 5w
charger (1a).

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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 by: nospam - Mon, 9 May 2022 17:42 UTC

In article <g3unki-jk.ln1@Telcontar.valinor>, Carlos E.R.
<robin_listas@es.invalid> wrote:

> >> the battery must be disconnected from the car
> >> first, or the electronics can be destroyed (overvoltage). Happened to me.
> >
> > the battery doesn't need to be disconnected.
>
> nospam, don't talk of things you don't understand

take your own advice.

i'm *very* familiar with battery chargers for various battery
chemistries. you clearly are not.

> Fast charging a lead acid battery means supplying it with a high
> voltage, maybe 20 or 30 volts, much more than what the battery can
> absorb. If the car is not disconnected, that voltage reaches the car itself.

that is flat out false. where did you get that bogus information?

applying 20-30v to a 12v lead acid car battery will destroy it.

fast charging is a function of the *current*, not the voltage. see
below, and the initial charge phase is constant current, while the
battery voltage rises to a particular threshold. see below for
specifics.

> What you say now is trash:

it isn't.

here's an example of a ctek car battery charger and its various phases.
other brands are similar.

<https://www.motorcycle.com/blog/wp-content/uploads/2014/02/022514-CTEK-
battery-charger-3-chart-633x360.jpg>

> > modern car battery chargers initially supply a constant current until
> > the battery voltage rises to ~14.4v (bulk charge), at which point it
> > switches to constant voltage to top it off (absorption charge) until
> > the current draw is minimal, and then switches to trickle charging (aka
> > float).
> >
> > when the vehicle is running, the voltage is ~13.8v with a fully charged
> > battery (higher if it's not).
> >
> > chargers that do not limit voltage and/or current can destroy all sorts
> > of things, including the battery. do not use.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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 by: sms - Mon, 9 May 2022 17:48 UTC

On 5/9/2022 10:03 AM, Carlos E.R. wrote:

<snip>

> Fast charging a lead acid battery means supplying it with a high
> voltage, maybe 20 or 30 volts, much more than what the battery can
> absorb. If the car is not disconnected, that voltage reaches the car
> itself.

I've never heard of high-voltage charging of lead-acid batteries, at
least not beyond 2.5 volts per cell (14.8V for a six cell car battery).

The exception is the "pulse chargers" that attempt to remove sulfation
in lead-acid batteries by using high-voltage, high-frequency pulses, and
in that case it would make sense to disconnect the battery from the
vehicle prior to attempting this.

There is no conclusive proof that pulse charging has any positive
effect, only some limited empirical evidence. There are ways to remove
sulfation from non-sealed lead-acid batteries, but not with pulsed charging.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

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 by: nospam - Mon, 9 May 2022 17:58 UTC

In article <t5bk64$f9c$1@dont-email.me>, sms
<scharf.steven@geemail.com> wrote:

>
> > Fast charging a lead acid battery means supplying it with a high
> > voltage, maybe 20 or 30 volts, much more than what the battery can
> > absorb. If the car is not disconnected, that voltage reaches the car
> > itself.
>
> I've never heard of high-voltage charging of lead-acid batteries, at
> least not beyond 2.5 volts per cell (14.8V for a six cell car battery).

2.75v is the acceptable maximum.

> The exception is the "pulse chargers" that attempt to remove sulfation
> in lead-acid batteries by using high-voltage, high-frequency pulses, and
> in that case it would make sense to disconnect the battery from the
> vehicle prior to attempting this.

pulse chargers are nowhere near 20-30v.

for ctek, it's 15.8v for the initial (and mostly useless) desulfation
phase, which will not destroy a vehicle's electronics.

> There is no conclusive proof that pulse charging has any positive
> effect, only some limited empirical evidence.

true.

> There are ways to remove
> sulfation from non-sealed lead-acid batteries, but not with pulsed charging.

none that reliably work.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

<slrnt7imf5.2sh9.g.kreme@zephyrus.local>

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From: g.kr...@kreme.dont-email.me (Lewis)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
checking re-charge times
Date: Mon, 9 May 2022 18:13:57 -0000 (UTC)
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 by: Lewis - Mon, 9 May 2022 18:13 UTC

In message <t5bedb$8fo$1@dont-email.me> sms <scharf.steven@geemail.com> wrote:
> On 5/9/2022 4:07 AM, Carlos E.R. wrote:
>> On 2022-05-08 16:20, nospam wrote:
>>> In article <t58hup$esn$1@dont-email.me>, sms
>>> <scharf.steven@geemail.com> wrote:
>>>
>>>>
>>>> You can charge at the very low rate by not letting the charger see the
>>>> resistors on the data pins.
>>>
>>> by not seeing the resistors (or actual negotiation), the 'very low
>>> rate' is 100ma, as per the usb spec, which is insufficient to charge a
>>> phone battery.
>>
>> Don't be that absolute. When you do that, you deserve getting the
>> «nospam is wrong of course™» response.
>>
>> Some phones may not charge at that rate, others do.
>>
>> I have one such cable with just two wires, and all of my devices (with
>> micro-usb connectors) can charge with it, except an old Samsung Galaxy
>> Mini 2 phone. That cable came with a BT headphone, probably with the
>> purpose of forcing slow, low rate, charging.
>>
>> I have a charger with eight outputs. 2 of them are "1 load unit", same
>> as an old computer. They can charge all my phones, tablets, headsets,
>> cameras, etc. All of those with USB connection, that is. Except one,
>> that old Samsung phone.
>>
>> So I intentionally use those two outputs to charge my phone while I
>> sleep, or other devices that I'm likely to forget I left charging.
>>
>> I have been doing that to my previous phone for four years, the battery
>> is just fine.

> nospam is wrong of course™

You're ignorance is showing.

> You can charge a phone, albeit very slowly, at 100mA.

Not likely, since the phones need to be on in order to charge, and they
use more than 100mA to be on. You will not charge the phone at 100mA,
you will very slightly slow the phones discharge.

> There's no good reason to do this

Of course not, since it will not charge the phone.

> For an iPhone there is two ways a) turn off the phone,

No iPhone will not charge at all when off.

--
"Are you pondering what I'm pondering?"
"I think so, Brain, but nose rings are kinda passé by now."

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

<t5c1pb$145r$1@gioia.aioe.org>

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From: spa...@nospam.com (Andy Burnelli)
Newsgroups: comp.mobile.android,misc.phone.mobile.iphone,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times
Date: Mon, 9 May 2022 22:41:21 +0100
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 by: Andy Burnelli - Mon, 9 May 2022 21:41 UTC

ohg...@gmail.com wrote:

>> Notice the tire experiments above where there is precious little
>> information on the Internet why all the cars that are perfectly aligned in
>> any given twisty road area wear the tires the exact same abnormal way.
>>
>> Take a look at the Scotty Kilmer video below, and note particularly that
>> the photos I've been posting (which I've posted for years) are the _same_
>> as in Scotty Kilmer's videos (just look and you'll recognize my pictures!).
>> <https://youtu.be/i7alzjqmPQo>
>>
>> This is a shot he took of my BMW tires, for example, with wear lined up:
>> <https://i.postimg.cc/HngnZR6h/scottykilmer.jpg> He stole my images! :)
>>
> Kilmer is a backyard mechanic at best who doesn't know any more about,
> well, *anything* than any one else. I wouldn't let this guy change
> the oil on a car.

I understand and I don't disagree since I, myself, have a love:hate
relationship with Scotty Kilmer, as he seems to spew every bit of nonsense
in the book - but - he's also an extremely experienced mechanic.

BTW, this offshoot tangent happened when Jeff Liebermann asked how many
apps I have installed if I can lose hundreds without blinking an eye,
and the test I just ran moments ago shows 663 installed 3rd-party
"packages" and 390 system packages.

I include the documentation of a post I just made below so that the folks
on this newsgroup (which is different from that post) can benefit from the
tremendous effort in making the solution easily cut & paste for everyone.

If anyone here can help find the missing apps, I'd appreciate your
knowledge since I've tried what I know offhand and that has failed so far.

Please see below for a post I just made for this recent thread today:
*Using Windows to find hidden files on the Android file system over Wi-Fi*
<https://groups.google.com/g/comp.mobile.android/c/gonmj6NB2f0>

WIP: Using Windows to find hidden files on the Android file system

Help requested from those who know more about finding hidden files
on Android from the Windows computer over your local Wi-Fi network.

Recently I updated Android 11 to 12 and all hell broke loose (perhaps
because I change my GSF ID which, we can assume, is saved by apps).
<https://i.postimg.cc/0Q4xmPPR/gsfid01.jpg> How to change GSF ID
Maybe changing the GSF ID caused apps with GSF to be indexed wrong?
<https://i.postimg.cc/YStB48LH/gsfid03.jpg> Some apps use GSF APIs

This learning experience is perhaps a good thing as it's an opportunity to
learn where Android apps typically install their code into.
<https://groups.google.com/g/comp.mobile.android/c/GngVnfddiT8>

As that location is likely still there (I find it hard to believe that
Google _deleted_ the apps off my Android phone during the update).
<https://i.postimg.cc/L4tFb7ND/update14.jpg> The apps are gone!

Running adb over Wi-Fi (tcpip port 5555) allows me to list packages:
C:\> adb shell pm list packages > installed.txt (lists 663 packages)
C:\> adb shell pm list packages -s (of which 390 lines are system)
C:\> adb shell pm list packages -3 (and where 273 lines are third party)
One of which, we would have hoped, would be zoom, but it's not there:
C:\> adb shell pm list packages -f | findStr "zoom" (finds nothing)

Luckily, re-installing even hundreds of apps on Android is trivial since
all the APKs are automatically _not deleted_ when apps are installed.
<https://i.postimg.cc/Z5kdD2rg/aurora04.jpg> Just don't delete APKs

Which means they can be saved directly onto a Windows mount point.
<https://i.postimg.cc/cJK9rbjn/update03.jpg> APKs saved into Windows
And then the APKs can simply be slid onto Android to re-install apps.
<https://i.postimg.cc/wvsbcNBz/scrcpy05.jpg> Drag APK from Windows

But even without that, just clicking on the now-dead grayed-out icons
brings up the correct _new_ APK in the FOSS google play store client.
<https://i.postimg.cc/MHNhkgpY/update11.jpg> App is not installed

The point being the problem is NOT to re-install hundreds of APKs, as that
part is already trivial.... the problem here is to see if they're _still_
on the Android phone, where I need to know _where_ apps typically go.

Now it's time to look where the missing apps are typically installed into.

Let's take Zoom for example, which seems to have simply disappeared.
<https://i.postimg.cc/brtpv9T1/update17.jpg> Even Zoom disappeared!

First, let's check if Zoom requires GSF, and when we do, we see it does.
<https://i.postimg.cc/XJrSQ0w6/update21.jpg> Zoom requires GSF

So now, the question is whether or not Zoom is _already_ installed and
perhaps just hidden - but _where_ would zoom be installed onto Android?
<https://duckduckgo.com/?q=where+does+android+zoom+install+into>
<https://duckduckgo.com/?q=where+do+android+apps+install+into>

*Android Developers > Docs> Guides > App install location*
<https://developer.android.com/guide/topics/data/install-location>
"android:installLocation manifest attribute"

Apparently the flow is that the developer declares the location
android:installLocation=<unset>
App will be installed on internal storage only
android:installLocation="preferExternal"
App will be installed on sdcard if available
android:installLocation="auto"
App will be installed

But adb seems to show the location of installed packages.
<https://stackpointer.io/mobile/android-adb-list-installed-package-names/416/>

So let's try those adb commands over wi-fi (TCPIP port 5555) to see stuff.
C:\> adb kill-server
C:\> adb tcpip 5555
restarting in TCP mode port: 5555
C:\> adb connect 192.168.0.2:5555
connected to 192.168.0.2:5555
C:\> adb devices
List of devices attached
192.168.0.2:5555 device

I was hoping the "disabled" apps option would list zoom, but it didn't:
C:\> adb shell pm list packages -d > disabled_apps.txt (219L)
Nor did the enabled apps option list zoom (which wasn't expected):
C:\> adb shell pm list packages -e > enabled_apps.txt (444L)

I'm not at all sure what the definition of a "disabled" app really is.
But what was interesting was disabled apps were mostly in 1 spot.
C:\> adb shell pm list packages -d -f > location_disabled_apps.txt
package:/data/app/~~{stuff} (208L)
package:/product/app/. (3L)
package:/system/app/. (3L)
package:/system/priv-app/. (5L)

While enabled apps were far more scattered about the Android filesystem.
C:\> adb shell pm list packages -e -f > location_enabled_apps.txt (444)
package:/apex/. (11L)
package:/data/app/~~{stuff} (87L)
package:/product/app/. (8L)
package:/product/overlay/. (28L)
package:/product/priv-app/. (7L)
package:/system/app/. (106L)
package:/system/carrier/. (4L)
package:/system/framework/. (2L)
package:/system/priv-app/. (171L)
package:/system/system_ext/priv-app/. (8L)
package:/vendor/overlay/. (11L)
package:/vendor/priv-app/. (1L)

Of course, if I _install_ Zoom, the commands below will tell me where it
installed into, but I'm trying to find out if it's really still there.

So let's try this adb command over wi-fi (TCPIP port 5555) to see:
C:\> adb shell pm list packages -f -s > sys_package_location.txt (390L)
C:\> adb shell pm list packages -f > 3rd_package_location.txt (663L)

Summarizing those files, the system apps seem to be installed into
package:/apex/.
package:/data/app/.
package:/product/app/.
package:/product/overlay/.
package:/product/priv-app/.
package:/system/app/.
package:/system/carrier/.
package:/system/framework/.
package:/system/priv-app/.
package:/system/system_ext/priv-app/.
package:/vendor/overlay/.
package:/vendor/priv-app/.

And the third-party apps seem to be installed into:
package:/apex/. (11L)
package:/data/app/~~{stuff} (295L)
package:/product/app/. (11L)
package:/product/overlay/. (28L)
package:/product/priv-app/. (7L)
package:/system/app/. (109L)
package:/system/carrier/priv-app/. (4L)
package:/system/framework/. (2L)
package:/system/priv-app/. (176L)
package:/system/system_ext/priv-app/. (8L)
package:/vendor/overlay/. (11L)
package:/vendor/priv-app/. (1L)

There are two others options of interest which may help find zoom.
C:\> adb shell pm list packages -f -i > installer.txt (663L)
installer=com.android.settings (1L)
installer=com.android.vending (20L)
installer=com.aurora.adroid (9L)
installer=com.aurora.store (85L)
installer=com.facebook.system (3L) <== note WA is installed, not FB
installer=com.google.android.packageinstaller (57L)
installer=com.sec.android.app.samsungapps (1L)
installer=com.sprint.ce.updater (1L) <== note it's a T-Mobile phone
installer=com.tmobile.pr.adapt (4L)
installer=null (482)


Click here to read the complete article
Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

<f3rpki-c6t.ln1@Telcontar.valinor>

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From: robin_li...@es.invalid (Carlos E.R.)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently -
checking re-charge times
Date: Tue, 10 May 2022 12:24:15 +0200
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In-Reply-To: <t5bk64$f9c$1@dont-email.me>
 by: Carlos E.R. - Tue, 10 May 2022 10:24 UTC

On 2022-05-09 19:48, sms wrote:
> On 5/9/2022 10:03 AM, Carlos E.R. wrote:
>
> <snip>
>
>> Fast charging a lead acid battery means supplying it with a high
>> voltage, maybe 20 or 30 volts, much more than what the battery can
>> absorb. If the car is not disconnected, that voltage reaches the car
>> itself.
>
> I've never heard of high-voltage charging of lead-acid batteries, at
> least not beyond 2.5 volts per cell (14.8V for a six cell car battery).

I have.

>
> The exception is the "pulse chargers" that attempt to remove sulfation
> in lead-acid batteries by using high-voltage, high-frequency pulses, and
> in that case it would make sense to disconnect the battery from the
> vehicle prior to attempting this.
>
> There is no conclusive proof that pulse charging has any positive
> effect, only some limited empirical evidence. There are ways to remove
> sulfation from non-sealed lead-acid batteries, but not with pulsed
> charging.

No, this is just an industrial sized fast charger, intended to be used
on garages to give enough charge in 10 minutes to a battery so that it
can start the car and the client leaves. The client is told he has to
replace the battery soon.

It is brutal.

It pushes the 12v battery up to 20 or 30 volts.

The instructions specifically say to disconnect the battery from the
car. It is obvious, 20 volts can destroy the car electronics.

This is not done on a good battery.

And yes, I have seen this with my own eyes. You will not easily find it
on google.

--
Cheers, Carlos.

Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times

<100520220833044483%nospam@nospam.invalid>

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From: nos...@nospam.invalid (nospam)
Newsgroups: misc.phone.mobile.iphone,comp.mobile.android,sci.electronics.repair
Subject: Re: Battery charge tests - running a battery to 0 frequently - checking re-charge times
Date: Tue, 10 May 2022 08:33:04 -0400
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 by: nospam - Tue, 10 May 2022 12:33 UTC

In article <f3rpki-c6t.ln1@Telcontar.valinor>, Carlos E.R.
<robin_listas@es.invalid> wrote:

> >> Fast charging a lead acid battery means supplying it with a high
> >> voltage, maybe 20 or 30 volts, much more than what the battery can
> >> absorb. If the car is not disconnected, that voltage reaches the car
> >> itself.
> >
> > I've never heard of high-voltage charging of lead-acid batteries, at
> > least not beyond 2.5 volts per cell (14.8V for a six cell car battery).
>
> I have.

where have you heard that?

citations required.

> >
> > The exception is the "pulse chargers" that attempt to remove sulfation
> > in lead-acid batteries by using high-voltage, high-frequency pulses, and
> > in that case it would make sense to disconnect the battery from the
> > vehicle prior to attempting this.
> >
> > There is no conclusive proof that pulse charging has any positive
> > effect, only some limited empirical evidence. There are ways to remove
> > sulfation from non-sealed lead-acid batteries, but not with pulsed
> > charging.
>
> No, this is just an industrial sized fast charger, intended to be used
> on garages to give enough charge in 10 minutes to a battery so that it
> can start the car and the client leaves. The client is told he has to
> replace the battery soon.

what is the make/model of this mythical charger?

> It is brutal.

it can be. fast charging is harsher on the battery than slow charging,
but sometimes it's needed in an emergency. it should not be used
routinely.

> It pushes the 12v battery up to 20 or 30 volts.

no it doesn't, since 20-30v will destroy a 12v lead acid battery.

you are confusing volts with amps.

fast chargers supply 20-30 *amps* to rapidly charge a car battery. not
volts.

many of them can supply more than that, most of which can also supply
significantly higher currents to start the vehicle (not to recharge).

car repair shops have something similar to these:
<https://m.media-amazon.com/images/I/61PD7OB6rvS._AC_SL1200_.jpg>
<https://www.toolsource.com/images/prod_images/ASO6001A_1200Wx1200H.jpg>

> The instructions specifically say to disconnect the battery from the
> car. It is obvious, 20 volts can destroy the car electronics.

it will also destroy the battery.

> This is not done on a good battery.

because good batteries do not need to be recharged.

> And yes, I have seen this with my own eyes. You will not easily find it
> on google.

because what you describe is wrong.

otherwise, it would easily be found with a search.

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server_pubkey.txt

rocksolid light 0.9.7
clearnet tor