Battery

I have these Energizer batteries and I want to charge them, can I use my Duracell one?
They also have different mAh levels too

[don't even know what it is, but okay]

Duracell- 2650 mAh
Energizer- 2500 mAh

Shannon-duracell rechargeable

UPDATED: Energizer Battery commercial with Jacko Jackson

I just bought these energizer e2 NiMH rechargeable AA batteries, and it came with a pack of 8 rechargeable AA batteries and one charger. Now, I am planning to charge them all, use only four at a time (that’s how many my camera holds) and when the first four run out, I then plan on switching to the other four. But if I’m not going to use those batteries, and they are still fully charged, how long will they last before the start to naturally drain power?

Ellamae-duracell rechargeable

UPDATED: Thundersky battery failure in Bob Siebert’s AC150 conversion

I believe that NiCad batteries have a “memory” - so they should be completely discharged occasionally.
What is the best way of doing this? I have sometimes put the NiCad batteries in a torch, and left it switched on for 24 hours, but this does not completely discharge the batteries.
I also have a fairly ordinary battery charger, which has a switch that you can put to “charge”, “discharge” or “test” position, but this works so slowly that it is not worth doing.
What I really need is a simple device that I can put the NiCad batteries in to drain all the current out of them in a reasonable length of time. If I could buy this device, I would, if it is not too expensive. I don’t want to make my own device, unless it is foolproof, in case it it is dangerous when discharging the batteries. I have looked in catalogues (Maplins, etc) but cannot find anything that would do this job.

Maude-laptops battery

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