18V 4Ah, CORE Coolpack 2.0 Battery

The Bosch CORE18 V Compact Battery is the next-gen Lithium-ion battery to keep the power and runtime, while losing the weight. The GBA18 V40 single-layer battery features advancements in design to reduce resistance and increase efficiency, to improve the performance-to-weight ratio of tools used on the jobsite all day. Engineered with 21700 cell technology, the battery matches the power from the original two-layer 4.0 Ah battery with improved performance per cell. Bosch engineered the exclusive CoolPack 2.0 technology to manage the heat of the higher power-density cells, and it provides better cooling than the previous-generation CoolPack system. CoolPack 2.0 cools the battery 15% faster than previous 4.0 Ah double-layer versions.

Compact 18V Li-ion battery – engineered to provide next-gen power and runtime, while losing the weight, for optimized performance

High-power cells – use enhanced 21700 cell technology, combined with advanced battery design for greater efficiency

Cutting-edge cell design – engineered to improve performance in tools used on jobsite all day, plus CoolPack 2.0 heat management

Bosch-exclusive CoolPack 2.0 technology – cooling the battery 15% faster than previous 4.0 Ah double-layer versions

Lightest high-power battery – weighs only 1.15 Lb., but provides performance comparable to much heavier batteries