Capacity (of a cell or battery)
The quantity of electricity that may be removed from a cell or battery at a given rate of discharge under specified conditions of voltage and temperature.
It is usually measured in ampere-hours.
Note: The term rating (of a battery) refers to the ampere-hour capacity as specified under given conditions of discharge.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM