Voltage: 18Amperage: 6.3AhBattery Chemistry: Lithium IonHigh Power Cells Deliver Up To 1,440 Watts Of Power, 80% More Than Previous Generation 6.0Ah BatteriesEnhanced Cell Design Provides Up To 20% Longer Runtime Than Previous Generation 6.0Ah BatteriesExclusive CoolPack 2.0 Technology Provides Up To 35% More Cooling Effect Than The First Version Of CoolPack And Up To 135% More Battery Life Than Batteries Without CoolPackFeatures Backwards And Forwards Compatibility With All Bosch 18V Tools And ChargersFast Recharge, Charges To 80% In Only 41 Minutes And 100% In Only 55 Minutes Using The Optional Bosch BC1880 18V Fast ChargerIntegrated Fuel Gauge For Fast And Easy Charge StatusCold Weather Operation, Battery Will Work Down To -4 Degrees FahrenheitDurable Housing Survives A 3 Meter Drop