The electric output of a cell or battery on a service test delivered before the cell reaches a specified final electrical condition and may be expressed in ampere-hours, watt-hours, or similar units. The capacity in watt-hours is equal to the capacity in ampere-hours multiplied by the battery voltage.

The battery ampere-hour capacity at full charge, standard temperature, and at a specified (usually C10) discharge rate.

The amount of stored energy available from a battery. The battery capacity is expressed in ampere-hours or watts per cell.

The total number of ampere-hours that can be withdrawn from a fully charged battery.

The total amount of electrical energy, in watt hours, available from a battery.

The maximum total electrical charge, expressed in ampere-hours (AH), that a battery can deliver to a load under a specific set of conditions.

The battery's charge-holding capacity (measured in Milliamp-hours).