Just wanted to add that batteries have a rating called Amp-Hours abbreviated AH.
Amps = an abbreviation for Amperes. One Ampere = one Joule per second.
A Joule is that amount of energy required to displace a mass of one Newton by a distance of one Meter.
AH = Ampere Hours. Thus, 1 Ampere Hour = 3600 Joules - so now you know how much work your battery can perform.
In theory...
