Battery Terms and Definitions

Posted on December 12, 2006 by

Last updated: 7/6/2021

Active MaterialThe chemically reactive material at the positive or negative electrode that engages in the charge and discharge reactions.
Ampere Hours (Ah)The number of minutes a battery can maintain a useful voltage under a specified load.
AnodeAn electrode through which electric current flows into a polarized electrical device.
BatteryOne or more cells connected to form one unit supplying voltage and having provisions for external connections. Batteries produce electrons through chemical reactions.
CapacityThe ability of the battery or cell to supply current.
CathodeAn electrode through which electric current flows out of a
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