A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use. It is composed of one or more electrochemical cells. The te. Devices which use rechargeable batteries include, portable consumer devices, light vehicles (such as,,, and electric ), road vehicles (cars, vans, truck. During charging, the positive active material is, releasing, and the negative material is, absorbing electrons. These electrons constitute the flow in the external. The may.