I tend to buy industrial batteries (AA & AAA) because they are a fair bit
cheaper than consumer batteries.

I am beginning to think they don't last as long, any views?

--
Jeff Gaines Dorset UK
There are 3 types of people in this world. Those who can count, and those
who can't.

On 06/12/2023 21:08, Jeff Gaines wrote:
>
> I tend to buy industrial batteries (AA & AAA) because they are a fair
> bit cheaper than consumer batteries.
>
> I am beginning to think they don't last as long, any views?
>

Are you referring to Duracell Industrial (previously called ProCell) and
now again called Procell?

I gave up on them a few years back when the quality changed very much
for the worse. They no longer last and leak like a sieve when they start
getting towards the end of their life, or if left in equipment for less
than a year.

I now favour Energiser for AA and AAA Alkaline.

For batteries in my wireless temperature sensors in the fridge and
freezer I use Energiser Ultimate Lithium. Although expensive they work
down to -40C whereas alkaline batteries are unreliable in the freezer as
they are only specified to -20C

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk> wrote:

> For batteries in my wireless temperature sensors in the fridge and
> freezer I use Energiser Ultimate Lithium. Although expensive they work
> down to -40C whereas alkaline batteries are unreliable in the freezer as
> they are only specified to -20C

I use these in the sensors for my garage doors. They have the longest life of
any I've tried so far.

--
"It is hard to imagine a more stupid decision or more dangerous way of making decisions than by putting those decisions in the hands of people who pay no price for being wrong." -- Thomas Sowell

On 06/12/2023 21:30, Graham. wrote:
> "Jeff Gaines" <jgnewsid@outlook.com> Wrote in message:
>> I tend to buy industrial batteries (AA & AAA) because they are a
>> fair bit cheaper than consumer batteries.I am beginning to think
>> they don't last as long, any views?-- Jeff Gaines Dorset UKThere
>> are 3 types of people in this world. Those who can count, and those
>> who can't.
>
> If we are talking about Energizer alkerline cells, even the
> manufacturer makes no claim "Industrial" is anything other than a
> marketing/labelling strategy.

One of the original claims for the "industrial" cells was simply that
you could not easily buy them in the shops... so businesses could better
identify staff pilfering the company stock of batteries!

--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/

On 06/12/2023 23:29, John Rumm wrote:
> On 06/12/2023 21:30, Graham. wrote:
>> "Jeff Gaines" <jgnewsid@outlook.com> Wrote in message:
>>> I tend to buy industrial batteries (AA & AAA) because they are a
>>> fair bit cheaper than consumer batteries.I am beginning to think
>>> they don't last as long, any views?-- Jeff Gaines Dorset UKThere
>>> are 3 types of people in this world. Those who can count, and those
>>> who can't.
>>
>> If we are talking about Energizer alkerline cells, even the
>> manufacturer makes no claim "Industrial" is anything other than a
>> marketing/labelling strategy.
>
> One of the original claims for the "industrial" cells was simply that
> you could not easily buy them in the shops... so businesses could better
> identify staff pilfering the company stock of batteries!

+1
At one time you probably had to have a trade account and had to purchase
them in quantities much greater than in shops. Ebay changed that but the
batteries were often much cheaper than the equivalent shop items and
from many Ebay sources.

There was Ebay seller who sold Duracell Procell (later named industrial)
cheaper than the Ebay competitors and claimed sales in the 100s of
thousands. It later transpired when they were forced out of business
they owed the tax man quite a lot, Duracell a lot and Royal Mail a lot.
I believe fraud charges were brought.

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk

On 06/12/2023 22:37, Tim Streater wrote:
> On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk> wrote:
>
>> For batteries in my wireless temperature sensors in the fridge and
>> freezer I use Energiser Ultimate Lithium. Although expensive they work
>> down to -40C whereas alkaline batteries are unreliable in the freezer as
>> they are only specified to -20C
>
> I use these in the sensors for my garage doors. They have the longest life of
> any I've tried so far.

They have some interesting chemistry inside...
<https://www.youtube.com/shorts/yGDkiUAwxRs>

--

Jeff

On 12/7/2023 3:23 AM, Jeff Layman wrote:
> On 06/12/2023 22:37, Tim Streater wrote:
>> On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk> wrote:
>>
>>> For batteries in my wireless temperature sensors in the fridge and
>>> freezer I use Energiser Ultimate Lithium. Although expensive they work
>>> down to -40C whereas alkaline batteries are unreliable in the freezer as
>>> they are only specified to -20C
>>
>> I use these in the sensors for my garage doors. They have the longest life of
>> any I've tried so far.
>
> They have some interesting chemistry inside...
> <https://www.youtube.com/shorts/yGDkiUAwxRs>
>

The datasheet makes no specific mention of
what would happen in a long term immersion of
a battery. They don't want the contents exposed
to water, and that's why the thing has the layers
that it does. But I don't see anything guaranteeing
against the cell eventually being penetrated by
water internally.

Lithium Primary cell.

https://data.energizer.com/pdfs/lithiuml91l92_appman.pdf

2 Li(s) + 2 H2O -> 2 LiOH (aq) + H2(g) [Exothermic]

You should see the datasheet that comes with sticks of dynamite :-/

Paul

On 06/12/2023 in message <xn0oa9ts3hf2wm000@news.individual.net> Jeff
Gaines wrote:

>
>I tend to buy industrial batteries (AA & AAA) because they are a fair bit
>cheaper than consumer batteries.
>
>I am beginning to think they don't last as long, any views?

Many thanks for the replies, interesting :-)

The ones I have are indeed Procell, I think once they're used I'll go back
to standard domestic batteries.

--
Jeff Gaines Dorset UK
That's an amazing invention but who would ever want to use one of them?
(President Hayes speaking to Alexander Graham Bell on the invention of the
telephone)

On 07/12/2023 09:35, Paul wrote:
> On 12/7/2023 3:23 AM, Jeff Layman wrote:
>> On 06/12/2023 22:37, Tim Streater wrote:
>>> On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk> wrote:
>>>
>>>> For batteries in my wireless temperature sensors in the fridge and
>>>> freezer I use Energiser Ultimate Lithium. Although expensive they work
>>>> down to -40C whereas alkaline batteries are unreliable in the freezer as
>>>> they are only specified to -20C
>>>
>>> I use these in the sensors for my garage doors. They have the longest life of
>>> any I've tried so far.
>>
>> They have some interesting chemistry inside...
>> <https://www.youtube.com/shorts/yGDkiUAwxRs>
>>
>
> The datasheet makes no specific mention of
> what would happen in a long term immersion of
> a battery. They don't want the contents exposed
> to water, and that's why the thing has the layers
> that it does. But I don't see anything guaranteeing
> against the cell eventually being penetrated by
> water internally.
>
> Lithium Primary cell.
>
> https://data.energizer.com/pdfs/lithiuml91l92_appman.pdf
>
> 2 Li(s) + 2 H2O -> 2 LiOH (aq) + H2(g) [Exothermic]
>
What makes you think that there is any lithium *metal* in the cells at all?

> You should see the datasheet that comes with sticks of dynamite :-/
>
> Paul

--
For in reason, all government without the consent of the governed is the
very definition of slavery.

Jonathan Swift

On 07/12/2023 10:17, The Natural Philosopher wrote:
> On 07/12/2023 09:35, Paul wrote:
>> On 12/7/2023 3:23 AM, Jeff Layman wrote:
>>> On 06/12/2023 22:37, Tim Streater wrote:
>>>> On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk> wrote:
>>>>
>>>>> For batteries in my wireless temperature sensors in the fridge and
>>>>> freezer I use Energiser Ultimate Lithium. Although expensive they work
>>>>> down to -40C whereas alkaline batteries are unreliable in the freezer as
>>>>> they are only specified to -20C
>>>>
>>>> I use these in the sensors for my garage doors. They have the longest life of
>>>> any I've tried so far.
>>>
>>> They have some interesting chemistry inside...
>>> <https://www.youtube.com/shorts/yGDkiUAwxRs>
>>>
>>
>> The datasheet makes no specific mention of
>> what would happen in a long term immersion of
>> a battery. They don't want the contents exposed
>> to water, and that's why the thing has the layers
>> that it does. But I don't see anything guaranteeing
>> against the cell eventually being penetrated by
>> water internally.
>>
>> Lithium Primary cell.
>>
>> https://data.energizer.com/pdfs/lithiuml91l92_appman.pdf
>>
>> 2 Li(s) + 2 H2O -> 2 LiOH (aq) + H2(g) [Exothermic]
>>
> What makes you think that there is any lithium *metal* in the cells at all?

Because there is a small amount - less than 1g according to:
<https://batteryspecialists.com.au/blogs/news/everything-there-is-to-know-about-the-energizer-lithium-battery>
(This agrees with the product data sheet, which says the battery
contains less than 1g. The SDS says it contains about 6% of lithium or
lithium alloy. As the AA weighs about 15g, this confirms the lithium
content)

--

Jeff

On 07/12/2023 10:39, Jeff Layman wrote:
> On 07/12/2023 10:17, The Natural Philosopher wrote:
>> On 07/12/2023 09:35, Paul wrote:
>>> On 12/7/2023 3:23 AM, Jeff Layman wrote:
>>>> On 06/12/2023 22:37, Tim Streater wrote:
>>>>> On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk>
>>>>> wrote:
>>>>>
>>>>>> For batteries in my wireless temperature sensors in the fridge and
>>>>>> freezer I use Energiser Ultimate Lithium. Although expensive they
>>>>>> work
>>>>>> down to -40C whereas alkaline batteries are unreliable in the
>>>>>> freezer as
>>>>>> they are only specified to -20C
>>>>>
>>>>> I use these in the sensors for my garage doors. They have the
>>>>> longest life of
>>>>> any I've tried so far.
>>>>
>>>> They have some interesting chemistry inside...
>>>> <https://www.youtube.com/shorts/yGDkiUAwxRs>
>>>>
>>>
>>> The datasheet makes no specific mention of
>>> what would happen in a long term immersion of
>>> a battery. They don't want the contents exposed
>>> to water, and that's why the thing has the layers
>>> that it does. But I don't see anything guaranteeing
>>> against the cell eventually being penetrated by
>>> water internally.
>>>
>>> Lithium Primary cell.
>>>
>>> https://data.energizer.com/pdfs/lithiuml91l92_appman.pdf
>>>
>>> 2 Li(s) + 2 H2O -> 2 LiOH (aq) + H2(g)   [Exothermic]
>>>
>> What makes you think that there is any lithium *metal* in the cells at
>> all?
>
> Because there is a small amount - less than 1g according to:
> <https://batteryspecialists.com.au/blogs/news/everything-there-is-to-know-about-the-energizer-lithium-battery>
> (This agrees with the product data sheet, which says the battery
> contains less than 1g. The SDS says it contains about 6% of lithium or
> lithium alloy. As the AA weighs about 15g, this confirms the lithium
> content)
>
No. 'less than' does not equal 'equal'.

The lithium is in the electrolyte, as a salt.

--
Truth welcomes investigation because truth knows investigation will lead
to converts. It is deception that uses all the other techniques.

On 07/12/2023 10:11, Jeff Gaines wrote:
> On 06/12/2023 in message <xn0oa9ts3hf2wm000@news.individual.net> Jeff
> Gaines wrote:
>
>>
>> I tend to buy industrial batteries (AA & AAA) because they are a fair
>> bit cheaper than consumer batteries.
>>
>> I am beginning to think they don't last as long, any views?
>
> Many thanks for the replies, interesting :-)
>
> The ones I have are indeed Procell, I think once they're used I'll go
> back to standard domestic batteries.

I find the bulk packs of either Energiser or Philips batts from CPC work
out quite well - decent life and reasonable price.

(I have got a box of their own brand "Proelec" to try - but not used
those yet so won't comment).

--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/

John Rumm <see.my.signature@nowhere.null> wrote:
> I find the bulk packs of either Energiser or Philips batts from CPC work
> out quite well - decent life and reasonable price.
>
> (I have got a box of their own brand "Proelec" to try - but not used
> those yet so won't comment).

I've been using Proelec AAAs and they've been fine. Don't really use them
regularly enough to compare with any other type (most hungry devices now
have integrated lithium ion cells, which leaves primary batteries for
low-drain low-use things like remote controls and such).

Theo

On 07/12/2023 10:42, The Natural Philosopher wrote:
> On 07/12/2023 10:39, Jeff Layman wrote:
>> On 07/12/2023 10:17, The Natural Philosopher wrote:
>>> On 07/12/2023 09:35, Paul wrote:
>>>> On 12/7/2023 3:23 AM, Jeff Layman wrote:
>>>>> On 06/12/2023 22:37, Tim Streater wrote:
>>>>>> On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk>
>>>>>> wrote:
>>>>>>
>>>>>>> For batteries in my wireless temperature sensors in the fridge and
>>>>>>> freezer I use Energiser Ultimate Lithium. Although expensive they
>>>>>>> work
>>>>>>> down to -40C whereas alkaline batteries are unreliable in the
>>>>>>> freezer as
>>>>>>> they are only specified to -20C
>>>>>>
>>>>>> I use these in the sensors for my garage doors. They have the
>>>>>> longest life of
>>>>>> any I've tried so far.
>>>>>
>>>>> They have some interesting chemistry inside...
>>>>> <https://www.youtube.com/shorts/yGDkiUAwxRs>
>>>>>
>>>>
>>>> The datasheet makes no specific mention of
>>>> what would happen in a long term immersion of
>>>> a battery. They don't want the contents exposed
>>>> to water, and that's why the thing has the layers
>>>> that it does. But I don't see anything guaranteeing
>>>> against the cell eventually being penetrated by
>>>> water internally.
>>>>
>>>> Lithium Primary cell.
>>>>
>>>> https://data.energizer.com/pdfs/lithiuml91l92_appman.pdf
>>>>
>>>> 2 Li(s) + 2 H2O -> 2 LiOH (aq) + H2(g)   [Exothermic]
>>>>
>>> What makes you think that there is any lithium *metal* in the cells at
>>> all?
>>
>> Because there is a small amount - less than 1g according to:
>> <https://batteryspecialists.com.au/blogs/news/everything-there-is-to-know-about-the-energizer-lithium-battery>
>> (This agrees with the product data sheet, which says the battery
>> contains less than 1g. The SDS says it contains about 6% of lithium or
>> lithium alloy. As the AA weighs about 15g, this confirms the lithium
>> content)
>>
> No. 'less than' does not equal 'equal'.
>
> The lithium is in the electrolyte, as a salt.

Partially correct. The SDS at
<https://data.energizer.com/wp-content/uploads/2023/01/Lithium-FeS2-AIS-SDS-01-23.pdf>
states it contains "Lithium iodide - 0.3-3%". But it also states:
"Lithium or Lithium Alloy - 6.3-6.6% / AA 5.4-5.5% / AAA"
and
"In case of fire where lithium batteries are present, flood area with
water or smother with a Class D fire extinguishant appropriate for
lithium metal"

Finally, from <https://data.energizer.com/pdfs/lithiuml91l92_appman.pdf>:
Battery Description: Cylindrical lithium iron disulfide batteries use
lithium for the anode, iron disulfide for the cathode, and a lithium
salt in an organic solvent blend as the electrolyte. From the diagram
showing cutaway construction: Anode - lithium metal

--

Jeff

On 07/12/2023 10:17, The Natural Philosopher wrote:

<snip>

> What makes you think that there is any lithium *metal* in the cells at all?

Lithium primary cells do, or at least did, coin/button cells and the
like. Lithium metal anode. Also, the specialist high-temperature
(180'C, expensive!) Lithium cells do, certainly.

--
Cheers
Clive

On Thursday 7 December 2023 at 16:55:30 UTC, Clive Arthur wrote:
> On 07/12/2023 10:17, The Natural Philosopher wrote:
> <snip>
> > What makes you think that there is any lithium *metal* in the cells at all?
> Lithium primary cells do, or at least did, coin/button cells and the
> like. Lithium metal anode. Also, the specialist high-temperature
> (180'C, expensive!) Lithium cells do, certainly.
>
I wonder how they stop the lithium from melting in the battery at those
temperatures? Li has a melting point of 180.5 deg C?
John

> --
> Cheers
> Clive

On 12/7/2023 5:42 AM, The Natural Philosopher wrote:
> On 07/12/2023 10:39, Jeff Layman wrote:
>> On 07/12/2023 10:17, The Natural Philosopher wrote:
>>> On 07/12/2023 09:35, Paul wrote:
>>>> On 12/7/2023 3:23 AM, Jeff Layman wrote:
>>>>> On 06/12/2023 22:37, Tim Streater wrote:
>>>>>> On 06 Dec 2023 at 21:23:36 GMT, "alan_m" <junk@admac.myzen.co.uk> wrote:
>>>>>>
>>>>>>> For batteries in my wireless temperature sensors in the fridge and
>>>>>>> freezer I use Energiser Ultimate Lithium. Although expensive they work
>>>>>>> down to -40C whereas alkaline batteries are unreliable in the freezer as
>>>>>>> they are only specified to -20C
>>>>>>
>>>>>> I use these in the sensors for my garage doors. They have the longest life of
>>>>>> any I've tried so far.
>>>>>
>>>>> They have some interesting chemistry inside...
>>>>> <https://www.youtube.com/shorts/yGDkiUAwxRs>
>>>>>
>>>>
>>>> The datasheet makes no specific mention of
>>>> what would happen in a long term immersion of
>>>> a battery. They don't want the contents exposed
>>>> to water, and that's why the thing has the layers
>>>> that it does. But I don't see anything guaranteeing
>>>> against the cell eventually being penetrated by
>>>> water internally.
>>>>
>>>> Lithium Primary cell.
>>>>
>>>> https://data.energizer.com/pdfs/lithiuml91l92_appman.pdf
>>>>
>>>> 2 Li(s) + 2 H2O -> 2 LiOH (aq) + H2(g)   [Exothermic]
>>>>
>>> What makes you think that there is any lithium *metal* in the cells at all?
>>
>> Because there is a small amount - less than 1g according to:
>> <https://batteryspecialists.com.au/blogs/news/everything-there-is-to-know-about-the-energizer-lithium-battery>
>> (This agrees with the product data sheet, which says the battery contains less than 1g. The SDS says it contains about 6% of lithium or lithium alloy. As the AA weighs about 15g, this confirms the lithium content)
>>
> No. 'less than' does not equal 'equal'.
>
> The lithium is in the electrolyte, as a salt.
>

But you saw the Youtube video, right ?

You saw the alkali metal response to water.

We don't know what the exact (layered) setup
of the foil is, but at a guess, the outside layer
is an alkali metal. Maybe the substrate of the
foil, tends to be flammable. (Or, it could be
the chemical residue on the ribbon, which
aids in the response.)

That's a more vigorous response than the one you
get in schooling, where they take a piece of
sodium from sodium-under-oil jar, and drop that
into water. How that one differs, is it is not
self-igniting as easily. Other materials in that
series of the periodic table, are more energetic.

We also had a TV series, shown on Saturday mornings,
where they walk through the entire periodic table, demonstrating
the elements. And you get to see the vigorous reactions
of some of them.

https://en.wikipedia.org/wiki/Don_Showalter

"In 1988 Showalter became the series demonstrator in a 26-program
PBS education series by Annenberg/CPB, The World of Chemistry,
opposite with series host, Nobel prize winner Roald Hoffmann.
While Hoffmann introduced a series of concepts and ideas, Showalter
provided a series of demonstrations and other visual representations
to help students and viewers to better understand the information."

https://archive.org/stream/TheWorldOfChemistry/The%20World%20Of%20Chemistry/07%20-%20The%20Periodic%20Table/World%20of%20Chemistry%20-%20Transcript%2007%20-%20The%20Periodic%20Table_djvu.txt

We call this family the alkali metals.
They make up Group 1 in the periodic
table. The first element is lithium, and
then there's sodium, and potassium.
Down here is rubidium, and this one is
cesium. And do you notice anything that
they all have in common? You probably
see that they're all stored in very
unusual ways.

I'm gonna take
a piece of this lithium and put it into the
water. And watch what happens, how it
Starts to fizz a little bit. The fizzing now
is the reaction of lithium with the water
to produce hydrogen gas. Let's try the
sodium. I'll get a small piece of that,
not too big, because we don't want the
reaction to be too violent. Oh, that
reacts much faster, doesn't it? See the
sodium bouncing around there, again
fizzing, giving off that hydrogen gas.
Okay. Let's try potassium, the most
reactive of the three. I'll get a small
piece of that and put it into the water.
Wow! That really reacted violently.
Did you see the immediate reaction of
the potassium? Again, it's formed that
hydrogen gas and the hydrogen gas was
ignited.

Using a thin ribbon, having a decent surface
area, accelerates the reaction. If the foil
continued to be rolled up, the reaction
could not consume the material with the same
speed, which is where some of the "safety"
comes from.

Paul

On 07/12/2023 18:07, John Walliker wrote:
> On Thursday 7 December 2023 at 16:55:30 UTC, Clive Arthur wrote:
>> On 07/12/2023 10:17, The Natural Philosopher wrote:
>> <snip>
>>> What makes you think that there is any lithium *metal* in the cells at all?
>> Lithium primary cells do, or at least did, coin/button cells and the
>> like. Lithium metal anode. Also, the specialist high-temperature
>> (180'C, expensive!) Lithium cells do, certainly.
>>
> I wonder how they stop the lithium from melting in the battery at those
> temperatures? Li has a melting point of 180.5 deg C?
> John

I don't know (and I doubt they'd tell me). Some of them can go up to
200'C - maybe the construction is such that being liquid doesn't matter?
Certainly liquid Sodium is used in some cell types, but they don't
work when the Sodium is frozen.

https://electrochemsolutions.com/products/primary-lithium-cells/moderate-rate-lithium-cells/default.aspx

Battery packs made with this type of cell are often used in pairs, one
new one and one partially used one. Initially, the partially depleted
battery is used, and when it's just about empty, a circuit switches the
fresh one in. That way you don't waste very expensive energy by
throwing away batteries with some life left in them.

--
Cheers
Clive

On 21:30 6 Dec 2023, Graham. said:
> "Jeff Gaines" <jgnewsid@outlook.com> Wrote in message:
>>
>> I tend to buy industrial batteries (AA & AAA) because they are a fair
>> bit cheaper than consumer batteries.I am beginning to think they
>> don't last as long, any views?-- Jeff Gaines Dorset UKThere are 3
>> types of people in this world. Those who can count, and those who
>> can't.
>
> If we are talking about Energizer alkerline cells, even the
> manufacturer makes no claim "Industrial" is anything other than a
> marketing/labelling strategy.

I had the general impression that professional cells are designed for a
longer working life but won't provide as much current when called for.
However PowerCurious.com claims pro cells provide more current.

https://powercurious.com/duracell-procell-vs-coppertop-batteries/

Maybe comparing manufacturer's data sheets would help.

Like the OP, I don't find pro cells are noticeably better.

Pamela wrote:

> On 21:30 6 Dec 2023, Graham. said:
>> "Jeff Gaines" <jgnewsid@outlook.com> Wrote in message:
>>>
>>> I tend to buy industrial batteries (AA & AAA) because they are a fair
>>> bit cheaper than consumer batteries.I am beginning to think they
>>> don't last as long, any views?-- Jeff Gaines Dorset UKThere are 3
>>> types of people in this world. Those who can count, and those who
>>> can't.
>>
>> If we are talking about Energizer alkerline cells, even the
>> manufacturer makes no claim "Industrial" is anything other than a
>> marketing/labelling strategy.
>
> I had the general impression that professional cells are designed for a
> longer working life but won't provide as much current when called for.
> However PowerCurious.com claims pro cells provide more current.
>
> https://powercurious.com/duracell-procell-vs-coppertop-batteries/
>
> Maybe comparing manufacturer's data sheets would help.
>
> Like the OP, I don't find pro cells are noticeably better.
I don't find pro cells are noticeably better.

On 20/12/2023 23:26, Mark wrote:
> Pamela wrote:
>
>> On 21:30 6 Dec 2023, Graham. said:
>>> "Jeff Gaines" <jgnewsid@outlook.com> Wrote in message:
>>>>
>>>> I tend to buy industrial batteries (AA & AAA) because they are a fair
>>>> bit cheaper than consumer batteries.I am beginning to think they
>>>> don't last as long, any views?-- Jeff Gaines Dorset UKThere are 3
>>>> types of people in this world. Those who can count, and those who
>>>> can't.
>>>
>>> If we are talking about Energizer alkerline cells, even the
>>> manufacturer makes no claim "Industrial" is anything other than a
>>> marketing/labelling strategy.
>>
>> I had the general impression that professional cells are designed for a
>> longer working life but won't provide as much current when called for.
>> However PowerCurious.com claims pro cells provide more current.
>>
>> https://powercurious.com/duracell-procell-vs-coppertop-batteries/
>>
>> Maybe comparing manufacturer's data sheets would help.

With Duracell industrial, and consumer branded, there are a range of
batteries aimed at either extremely low power (such as for a year or two
in clocks) or higher power outputs.

That link seems to be a vey hand-wavy comparison often going off at a
tangent and comparing alkaline with lithium rather than comparing
industrial with consumer branding of the same type. No figures are given
to back up the comparisons. The claim that consumer batteries are
cheaper than industrial is not my experience but this may be that
industrial are sold by warehouse type retailers rather than supermarkets.

My problem I've had with Duracell (alkaline) procell/industrial is that
they now leak badly when getting towards the end of their life. This
didn't happen with their batteries 10+years ago so possibly a change in
production in the intervening years. That fact the branding of the
batteries changed from Procell to Industrial and now back to Procell may
suggest Industrial started to get a bad reputation.

As is common with most big brands they seem to regularly change ownership.

--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk