Battery

A battery is a device that stores energy in chemical form and converts it into electricity when needed.

How it works

Inside a battery, chemical reactions release electrons that flow out as electric current. Some batteries are used once and thrown away, while rechargeable batteries can be refilled with energy many times.

Uses

Batteries power phones, torches, cars, electric vehicles and countless devices, storing energy so it can be used anywhere.

Frequently asked questions

What does a battery do?

It stores energy and provides electricity.

What is a rechargeable battery?

A battery that can be refilled with energy and reused.