Is there any indication that fast charging rejuvenates li-ion batteries? I
have owned a Samsung Calacy %ab S6 for three years now, ane there were
indications that the battery was losing capacity. I recently switched to a
GaN wall wart that does fast charging, and it seem that the battery has
regained some capacity since then. Is it just my imagination or is this
possible?

MajorLanGod wrote:

> Is there any indication that fast charging rejuvenates li-ion batteries?

I would have though to the contrary in the long term, whether there's
any short term occasional benefit who knows? You'd need a lab full of
identical phones and lots of methodical testing to find out ...

On 4/18/2023 1:32 AM, MajorLanGod wrote:
> Is there any indication that fast charging rejuvenates li-ion batteries? I
> have owned a Samsung Calacy %ab S6 for three years now, ane there were
> indications that the battery was losing capacity. I recently switched to a
> GaN wall wart that does fast charging, and it seem that the battery has
> regained some capacity since then. Is it just my imagination or is this
> possible?

<https://www.pcworld.com/article/435263/want-lithiumion-batteries-to-last-slow-charging-may-not-be-the-answer.html>.

--
“If you are not an expert on a subject, then your opinions about it
really do matter less than the opinions of experts. It's not
indoctrination nor elitism. It's just that you don't know as much as
they do about the subject.”—Tin Foil Awards

sms wrote:

> <https://www.pcworld.com/article/435263/want-lithiumion-batteries-to-last-slow-charging-may-not-be-the-answer.html>.

With batteries being 5, 6 & 7 amp hours, I wonder if they'll last longer
since they don't need to be recharged as often.

I charge mine only when I think about it now, as it doesn't need to be
charged overnight anymore and it charges up in just a short while.

Does the fewer cycles that results from big batteries mean longer life?
--
The only thing we have to fear is FEAR ITSELF...

and spiders.

On 4/18/2023 12:11 PM, Auric__ wrote:
> sms wrote:
>
>> <https://www.pcworld.com/article/435263/want-lithiumion-batteries-to-last-slow-charging-may-not-be-the-answer.html>.
>
> With batteries being 5, 6 & 7 amp hours, I wonder if they'll last longer
> since they don't need to be recharged as often.
>
> I charge mine only when I think about it now, as it doesn't need to be
> charged overnight anymore and it charges up in just a short while.
>
> Does the fewer cycles that results from big batteries mean longer life?

Not charging the battery to 100% or discharging it to 0% (or what the
device thinks is 0%) is the way to increase the battery life. Slow
charging a battery doesn't do anything. OTOH, there's fast charging, of
18-25W or so, then there's the very high-rate charging that some phone
manufacturers are touting where there is significant heat generated.

--
“If you are not an expert on a subject, then your opinions about it
really do matter less than the opinions of experts. It's not
indoctrination nor elitism. It's just that you don't know as much as
they do about the subject.”—Tin Foil Awards

In article <u1mrt9$3lipi$1@dont-email.me>, sms
<scharf.steven@geemail.com> wrote:

>
> Not charging the battery to 100% or discharging it to 0% (or what the
> device thinks is 0%) is the way to increase the battery life.

true.

> Slow
> charging a battery doesn't do anything.

yes it does. slower charging is gentler on the battery.

On Tue, 18 Apr 2023 12:43:37 -0700, sms <scharf.steven@geemail.com>
wrote:

>On 4/18/2023 12:11 PM, Auric__ wrote:
>> sms wrote:
>>
>>> <https://www.pcworld.com/article/435263/want-lithiumion-batteries-to-last-slow-charging-may-not-be-the-answer.html>.
>>
>> With batteries being 5, 6 & 7 amp hours, I wonder if they'll last longer
>> since they don't need to be recharged as often.
>>
>> I charge mine only when I think about it now, as it doesn't need to be
>> charged overnight anymore and it charges up in just a short while.
>>
>> Does the fewer cycles that results from big batteries mean longer life?
>
>Not charging the battery to 100%

That's not easy to do, at least not for me. I plug in the charger when
I go to sleep at night. The next time I look at it, in the morning,
it's at 100%

>or discharging it to 0% (or what the

But that's easy. I never do that.

>device thinks is 0%) is the way to increase the battery life. Slow
>charging a battery doesn't do anything. OTOH, there's fast charging, of
>18-25W or so, then there's the very high-rate charging that some phone
>manufacturers are touting where there is significant heat generated.

On 4/18/2023 2:02 PM, Ken Blake wrote:
> sms <scharf.steven@geemail.com wrote:

>> Not charging the battery to 100% [for longer life]

> That's not easy to do, at least not for me. I plug in the charger
> when I go to sleep at night. The next time I look at it, in the
> morning, it's at 100%

Check your phone. My Galaxy S10+ has a setting that stops charging at
85% (Settings > Battery and Device care > Battery > More battery
settings > Protect battery switch to on).

I don't use it because I prefer to have a more power available in case
of any unexpected excessive phone use. So far at 3 1/2 years it looks
like my battery will outlast my need (want?) of a new phone...

On Tue, 18 Apr 2023 14:34:02 -0700, AJL <noemail@none.com> wrote:

>On 4/18/2023 2:02 PM, Ken Blake wrote:
>> sms <scharf.steven@geemail.com wrote:
>
>>> Not charging the battery to 100% [for longer life]
>
>> That's not easy to do, at least not for me. I plug in the charger
>> when I go to sleep at night. The next time I look at it, in the
>> morning, it's at 100%
>
>Check your phone. My Galaxy S10+ has a setting that stops charging at
>85% (Settings > Battery and Device care > Battery > More battery
>settings > Protect battery switch to on).

Thanks very much. I will.

>
>I don't use it because I prefer to have a more power available in case
>of any unexpected excessive phone use. So far at 3 1/2 years it looks
>like my battery will outlast my need (want?) of a new phone...

On 2023-04-19 11:16:14 +0000, Ken Blake said:

>>Check your phone. My Galaxy S10+ has a setting that stops charging at
>>85% (Settings > Battery and Device care > Battery > More battery
>>settings > Protect battery switch to on).
>
> Thanks very much. I will.

The less you charge it the better the life of the phone.
Less charging means both in total percentage & in total number of charges.

"There is a direct correlation between your battery's life span and the
number of times you charge your phone."
https://www.slashgear.com/918660/why-you-need-to-stop-charging-your-android-phone-to-100

There's no reason with most new Android phones to put it on a charger
overnight.

"We're a long way from the early days of cellphones, where an overnight
charge might be required.
https://www.slashgear.com/918660/why-you-need-to-stop-charging-your-android-phone-to-100/"

The batteries are so big that they don't need nightly charges.

On 4/18/23 8:22 PM, Your Name wrote:

>The batteries are so big that they don't need nightly charges.

Need and want are two different things. I want the maximum phone time
available to cover any unexpected excessive phone use and the way to get
that is to start the day at 100%. Overnight charging does that nicely...

On 2023-04-19 04:49:52 +0000, AJL said:

>>The batteries are so big that they don't need nightly charges.
>
> Need and want are two different things. I want the maximum phone time
> available to cover any unexpected excessive phone use and the way to get
> that is to start the day at 100%. Overnight charging does that nicely...

Maybe you don't have a recent Android phone with a big battery and a QC/PD
fast charger because you don't seem to understand how well they work.

With the big batteries and the QC/PD chargers, if you start almost dead and
you don't limit it to 80% or 85% and you let it go to 100%, it still
shouldn't take more than a couple of hours. If that.

If you do that when you hit the sack, you'll be at 100% within about two
hours of falling asleep and the rest of the time it won't be charging.

On 4/18/2023 10:54 PM, Your Name wrote:
> On 2023-04-19 04:49:52 +0000, AJL said:

>>> The batteries are so big that they don't need nightly charges.

>> Need and want are two different things. I want the maximum phone
>> time available to cover any unexpected excessive phone use and the
>> way to get that is to start the day at 100%. Overnight charging
>> does that nicely...

> Maybe you don't have a recent Android phone

I bought my Galaxy S10+ in Sep of 2019.

> with a big battery

It has a 4000mAh battery.

> and QC/PD fast charger

It came with a wired fast charger but I didn't use it because I wanted a
wireless charger.

> because you don't seem to understand how well they work.

The generic wireless charger I bought was also a fast charger.
Unfortunately it made the phone very very hot. So I turned it into a
cool (and slow) charger by using a smaller charger power supply. As an
overnight charger the charging speed reduction didn't matter to me.

> With the big batteries and the QC/PD chargers, if you start almost
> dead and you don't limit it to 80% or 85% and you let it go to 100%,
> it still shouldn't take more than a couple of hours. If that.

I would hate to have to plan my daytime phone use around when I'm going
to charge my phone.

> If you do that when you hit the sack, you'll be at 100% within about
> two hours of falling asleep and the rest of the time it won't be
> charging.

And if I'm sleeping I don't care how long it takes to charge as long as
it's 100% and ready to go in the morning...

On Tue, 18 Apr 2023 16:16:14 -0700, Ken Blake <Ken@invalid.news.com>
wrote:

>On Tue, 18 Apr 2023 14:34:02 -0700, AJL <noemail@none.com> wrote:
>
>>On 4/18/2023 2:02 PM, Ken Blake wrote:
>>> sms <scharf.steven@geemail.com wrote:
>>
>>>> Not charging the battery to 100% [for longer life]
>>
>>> That's not easy to do, at least not for me. I plug in the charger
>>> when I go to sleep at night. The next time I look at it, in the
>>> morning, it's at 100%
>>
>>Check your phone. My Galaxy S10+ has a setting that stops charging at
>>85% (Settings > Battery and Device care > Battery > More battery
>>settings > Protect battery switch to on).
>
>Thanks very much. I will.

I checked. I have an Android 4A. There's no "Battery and Device care,"
so I went to "Battery." There's no "More battery" and no "Protect
battery" switch.

On Wed, 19 Apr 2023 15:22:18 +1200, Your Name <YourName@YourISP.com>
wrote:

>On 2023-04-19 11:16:14 +0000, Ken Blake said:
>
>>>Check your phone. My Galaxy S10+ has a setting that stops charging at
>>>85% (Settings > Battery and Device care > Battery > More battery
>>>settings > Protect battery switch to on).
>>
>> Thanks very much. I will.
>
>The less you charge it the better the life of the phone.
>Less charging means both in total percentage & in total number of charges.
>
>"There is a direct correlation between your battery's life span and the
>number of times you charge your phone."
>https://www.slashgear.com/918660/why-you-need-to-stop-charging-your-android-phone-to-100
>
>There's no reason with most new Android phones to put it on a charger
>overnight.

>"We're a long way from the early days of cellphones, where an overnight
>charge might be required.
>https://www.slashgear.com/918660/why-you-need-to-stop-charging-your-android-phone-to-100/"
>
>The batteries are so big that they don't need nightly charges.

Sorry, I said "I plug in the charger when I go to sleep at night," but
I didn't mean every night. Only when the charge gets low.

On 4/19/2023 7:28 AM, Ken Blake wrote:
> AJL wrote:

>> Check your phone. My Galaxy S10+ has a setting that stops charging
>> at 85% (Settings > Battery and Device care > Battery > More
>> battery settings > Protect battery switch to on).

> I checked. I have an Android 4A. There's no "Battery and Device
> care," so I went to "Battery." There's no "More battery" and no
> "Protect battery" switch.

Probably not a problem in normal use anyway. I have left my protect
battery switch off from the beginning and still haven't NOTICED any
battery degradation after 3 1/2 years of overnight charging. I suspect
like most folks I'll change phones before I have to change the battery.

> I said [earlier in another post] "I plug in the charger when I go to
> sleep at night," but I didn't mean every night. Only when the
> charge gets low.

Depends on what your definition of low is I suppose. I would hate to
wake up to a 60% battery after a no-charge night and need the phone a
bunch that day. But as always YMMV...

On 2023-04-18 23:55:16 +0000, AJL said:

>> with a big battery
>
> It has a 4000mAh battery.

That's the problem. That's small by today's standards.

>> and QC/PD fast charger
>
> It came with a wired fast charger but I didn't use it because I wanted a
> wireless charger.

Both are good.

>> because you don't seem to understand how well they work.
>
> The generic wireless charger I bought was also a fast charger.
> Unfortunately it made the phone very very hot. So I turned it into a
> cool (and slow) charger by using a smaller charger power supply. As an
> overnight charger the charging speed reduction didn't matter to me.

All good. I didn't realize your battery is so small.
You probably do need to charge overnight.

>> With the big batteries and the QC/PD chargers, if you start almost
>> dead and you don't limit it to 80% or 85% and you let it go to 100%,
>> it still shouldn't take more than a couple of hours. If that.
>
> I would hate to have to plan my daytime phone use around when I'm going
> to charge my phone.

That's the entire reason for big batteries and fast PD/QC chargers.
You don't need to plan anything.
>> If you do that when you hit the sack, you'll be at 100% within about
>> two hours of falling asleep and the rest of the time it won't be
>> charging.
>
> And if I'm sleeping I don't care how long it takes to charge as long as
> it's 100% and ready to go in the morning...

With your small battery, you probably need to do what you're doing.
With a larger battery & a QC/PD charger, it's like drinking a soda pop.

When you feel like it, you pop open a can of soda pop and drink it.
If you're not thirsty, you don't.

There's no need to plan ahead anymore.
But you'll need to keep doing what you're doing until you get a new phone.

Your Name <YourName@yourisp.com> wrote:
> On 2023-04-18 23:55:16 +0000, AJL said:
>
> >> with a big battery
> >
> > It has a 4000mAh battery.
>
> That's the problem. That's small by today's standards.

I don't think it's "small by today's standards" (see below), but that
doesn't matter because AJL said - and you snipped -:

<AJL>
I bought my Galaxy S10+ in Sep of 2019.
</AJL>

So it's three and a half years 'old', not bought "today".

And FYI, my August 2020 Samsung Galaxy A51 also has a 4000mAh battery.
(And I mostly ('slow') charge as needed, so there you go.) Similar
current models (A53G/A54G) have a 5000mAh battery, so *not* much more
than 4000mAh.

[Rest, mostly irrelevant stuff, snipped.]

On 2023-04-19 12:20:36 +0000, Frank Slootweg said:

> Similar
> current models (A53G/A54G) have a 5000mAh battery, so *not* much more
> than 4000mAh.

A 5000mAh battery has 25% more battery capacity than a 4000mAh battery.

I know everything isn't linear but if it gets 12 hours on 4000mAh,
then it would get 16 hours on 5000mAh (assuming linear discharge).

You decide for yourself how much is much more or just a bit more.
But many 2023 Android phone batteries are even bigger than 5,000mAh.

These big batteries and fast QC/PD chargers are wonderful nowadays.

On Wed, 19 Apr 2023 09:17:25 -0700, AJL <noemail@none.com> wrote:

>On 4/19/2023 7:28 AM, Ken Blake wrote:
>> AJL wrote:
>
>>> Check your phone. My Galaxy S10+ has a setting that stops charging
>>> at 85% (Settings > Battery and Device care > Battery > More
>>> battery settings > Protect battery switch to on).
>
>> I checked. I have an Android 4A. There's no "Battery and Device
>> care," so I went to "Battery." There's no "More battery" and no
>> "Protect battery" switch.
>
>Probably not a problem in normal use anyway. I have left my protect
>battery switch off from the beginning and still haven't NOTICED any
>battery degradation after 3 1/2 years of overnight charging. I suspect
>like most folks I'll change phones before I have to change the battery.

Probably true of me too. I've never changed a battery,

>> I said [earlier in another post] "I plug in the charger when I go to
>> sleep at night," but I didn't mean every night. Only when the
>> charge gets low.
>
>Depends on what your definition of low is I suppose.

Certainly.

>I would hate to
>wake up to a 60% battery after a no-charge night and need the phone a
>bunch that day. But as always YMMV...

I never need my phone a bunch. I rarely use it as a phone, and my
web/e-mail use of it is greater, but still not a lot. I probably use
it mostly to read Kindle books, and that's usually in bed, and I
usually keep the charger plugged in when I do that.

I usually charge it when it gets down to around 50%--every two or
three days.

On 4/19/2023 1:22 PM, Ken Blake wrote:
> AJL <noemail@none.com> wrote:

>> I suspect like most folks that I'll change phones before the
>> battery goes bad.

> Probably true of me too. I've never changed a battery

I had to change out a phone battery some years ago. Not because it wore
out but because it swelled up like a balloon and popped the case open. I
bought a battery kit online and it wasn't all that expensive, around 30
USD as I recall. Probably more now though...

> I probably use it [phone] mostly to read Kindle books, and that's
> usually in bed, and I usually keep the charger plugged in when I do
> that.

You ought to get a small Amazon Fire OS tablet to read your books. It'll
read ebooks for a week, no cord required. I have an 8" and 2 10"
Fire tablets among my toys. Since they're Android devices I put the
Google Play Store on them. And because I prefer the Google Play Books
app over the Kindle app I now buy my ebooks from Google. Take that Amazon...

On Wed, 19 Apr 2023 19:29:15 -0700, AJL <noemail@none.com> wrote:

>On 4/19/2023 1:22 PM, Ken Blake wrote:
>> AJL <noemail@none.com> wrote:
>
>>> I suspect like most folks that I'll change phones before the
>>> battery goes bad.
>
>> Probably true of me too. I've never changed a battery
>
>I had to change out a phone battery some years ago. Not because it wore
>out but because it swelled up like a balloon and popped the case open. I
>bought a battery kit online and it wasn't all that expensive, around 30
>USD as I recall. Probably more now though...
>
>> I probably use it [phone] mostly to read Kindle books, and that's
>> usually in bed, and I usually keep the charger plugged in when I do
>> that.
>
>You ought to get a small Amazon Fire OS tablet to read your books. It'll

I've had a couple of Kindle tablets. I know I'm unusual but I actually
prefer to use my phone.

>read ebooks for a week, no cord required.

The cord doesn't bother me.

>I have an 8" and 2 10"
>Fire tablets among my toys.

Too big. I prefer the smaller phone which fits in my hand.

>Since they're Android devices I put the
>Google Play Store on them. And because I prefer the Google Play Books
>app over the Kindle app I now buy my ebooks from Google. Take that Amazon...

I seldom buy an e-book. I get them from our library,