I am in the market for some new tripple a cells but nowadays there seems to
be so many with different Ah ratings of this size. Are there any drawbacks
for going for the highest capacity, or is self discharge a problem and one
needs to stick to something more reasonable.

Brian

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Brian Gaff wrote:

I am in the market for some new tripple a cells but nowadays there seems to
be so many with different Ah ratings of this size. Are there any drawbacks
for going for the highest capacity, or is self discharge a problem and one
needs to stick to something more reasonable.

I think the higher capacity leads to fewer charge cycles, e.g. double A
2500mAh seem to be rated for 500 cycles where 2000mAh are rated for 1500
cycles, probably cut the capacity to just over one third for triple A.

Avoid LiDL which were previously good but their latest version struggles
to achieve half the rated capacity.

On 28/07/2016 08:16, Andy Burns wrote:
Brian Gaff wrote:



Avoid LiDL which were previously good but their latest version struggles
to achieve half the rated capacity.


Isn't that the problem with a lot of stuff nowadays, its impossible to
tell whether the stuff you can get now is the same as that which you
bought say a year or so ago. I have assumed its because stuff is now
made in batches rather than on a continuous production line and next
years batch may be a different spec or even made by a different
manufacturer.



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Chris B (News)

This used to happen a lot with own brand cassettes. For ages Hitachi/Maxell
used to make Dixons tape and it was wonderful, then they went to Basf and
it was mostly rubbish.

Brian

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This newsgroup posting comes to you directly from...
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"Chris B" wrote in message
...
On 28/07/2016 08:16, Andy Burns wrote:
Brian Gaff wrote:



Avoid LiDL which were previously good but their latest version struggles
to achieve half the rated capacity.


Isn't that the problem with a lot of stuff nowadays, its impossible to
tell whether the stuff you can get now is the same as that which you
bought say a year or so ago. I have assumed its because stuff is now made
in batches rather than on a continuous production line and next years
batch may be a different spec or even made by a different manufacturer.



--
Chris B (News)

On 28/07/2016 07:59, Brian Gaff wrote:

I am in the market for some new tripple a cells but nowadays there seems to
be so many with different Ah ratings of this size. Are there any drawbacks
for going for the highest capacity, or is self discharge a problem and one
needs to stick to something more reasonable.

Depends a bit what you are using them for. In a highish current regular
use application then the highest capacity is probably ideal but in a
lower current intermittent use situation the low self discharge types
perform much better. I prefer low self discharge types myself since that
way they are ready for use when I need them. I found some old NiMH would
lose around half their charge by the time I needed them and was forced
to carry a set of secondary batteries as insurance in case the
rechargeables and spares all gave up in the field.

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Regards,
Martin Brown

On Fri, 29 Jul 2016 10:23:47 +0100, Martin Brown wrote:

====snip====

to carry a set of *primary* batteries as insurance in case the
rechargeables and spares all gave up in the field.

Fixed your post for you. :-)

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Johnny B Good