A type of battery is a device that stores energy and converts it into electrical energy. Nicad (5 letters) is a type of rechargeable battery that uses nickel and cadmium as its main components. ALKALINE (8 letters) batteries are non-rechargeable and use ALKALINE electrolytes to produce electricity. STORAGE (7 letters) batteries are rechargeable and can be used to store energy for later use. Wetcell (7 letters) batteries are lead-acid batteries that use a liquid electrolyte to produce electricity.