This environmentally friendly Lithium Iron Phosphate (LiFePO4) battery from Tridonic has been specially created to be used in Emergency Lighting Units. It has been designed to last for up to 8 years and has an impressive 3 year guarantee from point of delivery. This battery is made by a certified manufacturer and has safety features incorporated. Given its purpose it's not surprising this product can function reliably in high temperatures. Included with this item are the polycarbonate fixing caps.