Lithium Ion Battery, Cool Pack, 8.0 Ah, 18-Volt
18v, lithium-ion, 8.0 ah performance battery, exclusive cool pack 2.0 technology provides up to 135 percent more battery life than batteries without, 2.14 pounds provides performance comparable to batteries that are up to 35% larger, works in cold weather conditions down to minus 4 degrees, designed for high capacity power tools.