Low discharge rechargeable batteries - failures?

[Pulcinella]

Depends on the application. I had some cheap Kodak batteries from Poundland - described as Heavy Duty, but were anything but. Absolutely useless in my camera - even from new. On the other hand they would probably keep a battery clock going for the best part of a year.

I tend to keep a few Duracell or similar - bought cheaply - for applications where rechargeables won't work, or for batteries needed in a hurry.

Mouse and keyboard probably not heavy duty, though my partner does say that I thump my keyboard too much.

[Bryn]

I think, also, if there's a LIDL in your area, that this coming week they have AA and AAA rechargeables on offer - 4 for £2.99.
I may have paid slightly more than that the other day.

I have used quite a large number of batteries over the years, both non rechargeable, and rechargeable. Some do seem better than others, but the prices are overall coming down, and as replacements for ones needed in a hurry the LIDL ones seemed to me to be good enough.

Some applications seem to require non rechargeables.

Interesting the tip about banging the batteries - I might try that. Hammer at the ready!

Beware the capacity of low-cost NiMHs. Poundland does them, but the AAs are only 700mAh IIRC and the AAAs a mere 300mAh. I use a good many of both AAs and AAAs in recording devices, noise-cancelling headphone, etc. I find the 2.5Ah charge-holding Duracells pretty reliable, of if I can remember to charge shortly prior to use, sone 2.9Ah not so charge-holding alternatives. The AAAs I use tend to be 750mAh or higher. I have tried the cheap 300mAh ones, but I also fojnd them a tiny bit fatter than spec., and thus difficult to fit and/or remove from soe devices.

[Pulcinella]

Beware the capacity of low-cost NiMHs. Poundland does them, but the AAs are only 700mAh IIRC and the AAAs a mere 300mAh. I use a good many of both AAs and AAAs in recording devices, noise-cancelling headphone, etc. I find the 2.5Ah charge-holding Duracells pretty reliable, of if I can remember to charge shortly prior to use, sone 2.9Ah not so charge-holding alternatives. The AAAs I use tend to be 750mAh or higher. I have tried the cheap 300mAh ones, but I also fojnd them a tiny bit fatter than spec., and thus difficult to fit and/or remove from soe devices.

Might that also be part of the reason that the Energizer charger is not too happy (though you seem not to have had any problems) with other brands?

PS: just checked the ratings.
Fusiomax 800 mAh
Uniross 1300 mAh
Energizer 2000 mAh
Think I'm right to have had my cull of the pooer-quality ones. I hadn't noticed that difference previously.