Open-circuit voltage

​The capacity value of a battery's output measured under specified conditions.Note: Discharge capacity is typically expressed in ampere-hours (Ah) or milliampere-hours (mAh).

The capacity value of a battery cell, module, battery pack, or system measured under conditions specified by the manufacturer and declared by the manufacturer.Note: Rated capacity is typically expressed in ampere-hours (Ah) or milliampere-hours (mAh).

The remaining capacity of a battery that can be discharged when the battery has been used for a period of time under specified conditions (such as discharge or storage) before continuing to discharge.

The capacity that can be discharged from a battery after it has been fully charged under specified conditions, allowed to stand for a specified time at a specified temperature, then fully recharged, and discharged again.

The capacity released by the internal active material of a battery during discharge divided by the mass of the active material.Note: Specific capacity is typically expressed in milliampere-hours per gram (mAh/g). Sometimes, the calculation of specific capacity includes the mass of all non-active materials, such as conductive additives and binders.

The ratio of a battery's energy to its mass. Also known as "mass energy density."