Tridonic's 4.5Ah NiCd battery pack contains 4 Nickel Cadmium cells. It has a 4-year design life and is intended for use with emergency lighting units. It comes with a one-year warranty from the date of delivery. Since this product is intended for emergency use it can withstand high temperatures. At high temperatures it also has reliablecharging properties. This pack's casing is made of polycarbonate and it comes with 1.0mm2 solid pre-stripped wire and 1 metre of integrated double insulated tape.