The charge of a battery may refer to as one of two things: (1) the relative state of capacity of the battery, or (2) the actual act of applying current flow in the reverse direction to return the battery to a fully-charged state.

Discharge, simply stated, is the act of drawing current from a battery.

Summary

Battery operations are summarized below.

Battery Operations Summary

The output voltage of a battery connected in series is equal to the sum of the cell voltages.

A battery that is connected in parallel has the advantage of a greater currentcarrying capability.

Secondary cells can be recharged; primary cells cannot be recharged.

The unit for battery capacity is the ampere-hour.

Internal resistance in a battery will decrease the battery voltage when a load is placed on the battery.

Shelf life is a term that is used to measure the time that a battery may sit idle and not lose more than 10 percent of its charge.

The charge of a battery may refer to one of two things: (1) the relative state of capacity of the battery, or (2) the actual act of applying current flow in the reverse direction to restore the battery to a fully-charged condition.

Discharge refers to the act of drawing current from a battery.