Volt x Amp = Watt/hr

12V x 5Amp = 60W

Battery Volt & Amp to Watt is calculator tool that helps to calculate the Watt hour of the battery.

What is the unit of a power or energy transfer rate for any equipment. For example if 12 volt bulb is consuming 20 watt that means bulb is consuming 1.66A (ampere) a current.