A rechargeable battery, also called a storage battery or a secondary cell, is a type of battery that can be recharged over and over again with electrical energy. A battery that is not rechargeable is called a primary cell or disposable battery. Like other batteries, rechargeable batteries can be recycled.
Compared with disposable batteries, rechargeable batteries have many advantages. They can be reused many times before being thrown away. They make less pollution because of this. Using them can cost less money, because people have to buy batteries less often.