Batteries
⭐ MasteredBatteries store chemical energy and turn it into electrical energy. Rechargeable batteries can be used again after charging. Recycle old batteries safely.
The first battery was made by Alessandro Volta around 1800.
All about Batteries
A battery stores chemical energy and turns it into electrical energy when connected to a circuit. Batteries power torches, toys, phones and cars. Inside each battery, chemical reactions release electrons that flow through the circuit.
Rechargeable batteries, such as those in phones, can be charged and used again many times. Disposable batteries cannot be recharged. Batteries contain materials that can be harmful, so they must be recycled rather than thrown in the bin.
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Real-life uses of Batteries
- Powering a torch or remote control
- Running electric cars and buses
- Storing solar energy for use at night
Frequently asked questions about Batteries
What is the difference between a battery and a cell?
A cell is a single unit that produces electricity. A battery is one or more cells connected together.
Why should batteries be recycled?
They contain metals and chemicals that can harm soil and water if they are thrown away.
Why do batteries get warm when charging?
Charging forces electricity into the battery and some energy is lost as heat.