A rechargeable battery, also called a storage battery or a secondary cell, is a battery that can be recharged over and over again with electricity. A battery that is not rechargeable is called a primary cell or disposable battery. It is thrown away after it no longer works. The voltage of rechargeable batteries can be restored by passing an electric current through the battery. Car batteries, for example, work this way..
Rechargeable batteries are not always chosen. Each battery costs more to make, and has more dangerous chemicals than disposable batteries.
Types of rechargeable batteriesEdit
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