Wh to mAh conversion calculator. Energy in Watt-hours (Wh) to electric charge in milliamp-hours (mAh) calculator. Enter the energy in watt-hours (Wh) and voltage in volts (V) and press the Calculate button:

How many joules in 1 watt hours? The answer is 3599.99999712. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between joules and watt hours. Type in your own numbers in the form to convert the units! ›› Want other units?

Aug 07, 2019 · Is "watt hour" the same as "amp hour"? No, but they are related. An amp hour (sometimes written as Ah or amp-hour) is a measure of current capacity and time. Watt itself is defined as Ampere X Voltage. So if a 5 Volt battery has 20 Watt Hour rating, and, it draws 2 Amp current, then the Watt delivered by Battery = 10 Watts ( 5 Volts x 2 Ampere). The battery will last 2 hours. The calculator will calculate the battery life if the Watt Hour and the battery voltage is known. Here is the formula

watts (joules/second) to calories per second conversion 1 watt (joules/s) (W) is equal 0.2388458966275 calories per second use this converter horsepowers to kilowatts (hp to kW) conversion 1 horsepower (hp) is equal 0.74569987158229 kilowatt (kW) use this converter kilowatts to horsepowers (kW to hp) conversion The key is to use the watts you know to calculate the amps at the battery voltage . For example, say you want to run a 250 watt 110VAC light bulb from an inverter for 5 hours. Amp-hours (at 12 volts) = watt-hours / 12 volts = 1470 / 12 = 122.5 amp-hours.