This Tridonic battery pack was created for use inemergency lighting units. This battery contains fourNiMH (Nickel-Metal Hydride) cells and is free of Cadmium and other hazardous metals. This product comes with a one-year warranty from the date of delivery and is intended to be used for four years. This product is designed to work efficiently in high temperatures and retain charge given the emergency application. This product has a durable polycarbonate casewith a 1.0mm2 stranded wire and is made by a certified quality manufacturer. This product's ambient temperature range is between 5 and 35 degrees Celsius.