[garyflynn]

Is there software or some method I can use to determine the amount of charge an old battery is able to hold? I have a bunch of batteries, some OEM, some generic, claiming different mah capacities.

I'd like to just carry the battery that actually holds a charge best for my phone, but it is very hard to do controlled tests with the actual phone I use. I'd love if there was a software that would deliberately run down a full charge and save the power output of the battery before it shuts down.

Is there anything like that?