No, so we need a new unit: the Watt hour. That’s Volts times Amp hours, or more incorrectly, one joule per second hour. Now it’s a question of the number of cells in a battery. What’s the ...

For example, a 500 mWh battery means it will release 500 watts at a specific voltage for one hour before it is discharged. See ampere-hour and watt. THIS DEFINITION IS FOR PERSONAL USE ONLY.