What is a Battery ?


A battery is a device for storing electrical energy in a chemical form, and then releasing it as direct current in a controlled way.

All batteries have a positive and a negative terminals, the whole assembly being within a container.

Atomic Lithium Ion batteries are secondary batteries, which means that they can be recharged after they have been discharged. Primary batteries can be discharged only once and then have to be thrown away; examples are some types of torch and radio batteries.


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