This Lithium Iron Phosphate battery from Tridonic has been specifically designed for use in emergency lighting units and can therefore withstand high temperatures reliably. This product has a 3 year warranty and has been designed for use for up to 8 years. This product is 9.0Ah and has 6 x 3.2V cells. This side-by-side battery has safety features incorporated and maintains a reliable charge even in higher temperatures.