Hydrogen fuel cell

Look at the AA rechargeable battery. It says 2500 mAh, which stands for milli-amp hours. To get amp-hours, divide this by 1000 to get _____AmpHours. This means that the battery could put out these many Amps for one hour before it ran out. If you multiply those Amps by the Volts of the battery, you will get the power it can put out for an hour. ................
................