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
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.
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.
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
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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Fixed your post for you. :-)
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