Parallel
Term used to describe the interconnection of cells or batteries in which all the like terminals are connected together. Results in increased capacity.

Passivation
The phenomenon by which a metal, although in conditions of thermodynamic instability, remains indefinitely unattacked because of modified or altered surface conditions.

Polarity
In electricity, the condition of being positive or negative.

Polarization
The lowering of the potential of a cell or electrode from its equilibrium value caused by the passage of an electric current.

Positive
A terminal or electrode which has a shortage of electrons.

Positive Temperature
A thermally reactive device which becomes highly resistive at a specific Coefficient (PTC) temperature or current.

Primary Battery
A battery which is not intended to be recharged and is discarded when the battery has delivered all of its electrical energy.

Prismatic Cell
The positive and negative plates are stacked rather than rolled as done in a cylindrical cell.

Pulse Current
A periodic current drain of higher than normal drain rates.