This2.2Ah battery from Tridonic has three NiMH (Nickel-Metal Hydride) cells which means it is free of Cadmium and other toxic metals. This battery was created specifically for use in emergency lighting units so it can withstand hightemperatures. This product comes with a one-year warranty from Tridonic and is designed to last for four years. A connecting cable and polycarbonate fixing caps are also included.