# Watt-hour definitions

A unit of energy, especially electrical energy, equal to the work done by one watt acting for one hour and equivalent to 3,600 joules.

noun

A unit of electrical energy or work, equal to one watt acting for one hour, or 3,600 joules.

noun

A unit of energy, especially electrical energy, equal to the work done by one watt acting for one hour. It is equivalent to 3,600 joules.

The power utilization for one hour measured in watts. Abbreviated "Wh," it is widely used to rate how long it takes for a battery to discharge. For smaller batteries, a milliwatt-hour (mWh) rating is used. 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.

A unit of electrical energy equal to the power of one watt in use for one hour; often used as a unit of electricity consumption.

noun