Bosch Lithium-Ion 4 Ah advanced power battery, 2-pack.
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Features
Lightweight Solution: Allows you to get the power and lose the weight in a compact battery
Power and Runtime: 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: 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
Charge-Status Indicator: Features high resolution for clear visibility