LIGHTWEIGHT SOLUTION: CORE18V 4 Ah battery allows you to get the power and lose the weight in a compact battery STANDARD CHARGER: Delivers a convenient charging solution POWER AND RUNTIME: Battery delivers 2x the runtime and 60% more power compared to BAT612 18V 2 Ah battery HIGH-POWER LITHIUM-ION CELLS: Features a single layer of enhanced 21700 cells for greater battery efficiency CUTTING-EDGE BATTERY DESIGN: Includes copper end plates, power rails and a flexible circuit board for reduced resistance and increased efficiency BOSCH-EXCLUSIVE COOLPACK 2.0 TECHNOLOGY: Cools the battery and helps provide longer battery lifetime compared to non-CoolPack Bosch 18V batteries COMPACT OPERATION: Battery weighs only 1.10 Lbs. but provides power for standard to medium-duty applications, such as drilling into concrete, metal and wood; metal grinding; cutting and even light-duty chipping BATTERY CHARGE-STATUS INDICATOR: Features high resolution for clear visibility BOSCH 18V CHARGERS ARE COVERED BY A FIVE YEAR LIMITED WARRANTY; BOSCH 18V BATTERIES ARE COVERED BY A THREE YEAR LIMITED WARRANTY: for details, visit the Bosch power tools website or call 1-877-BOSCH99 4-AMP CHARGING CURRENT: Delivers 2x the charging current compared to the GAL18V-20 standard charger