The Bosch CORE18V 4.0 Ah Compact Battery is designed to keep the power and runtime, while losing the weight. The GBA18V40 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. The battery is a truly flexible power system providing compatibility with a full range of Bosch 18V Li-ion cordless tools. The GBA18V40 is engineered with 21700 cell technology, matching the power from the original two-layer 4.0 Ah battery with improved performance per cell. The Bosch-exclusive CoolPack 2.0 heat-management system results in 15% faster cooling and 135% longer life compared to previous non-Bosch CoolPack 18V batteries.

• Battery Chemistry Lithium Ion
• Battery Watt Hours 72.0Wh
• Height 1.85"
• Length 4.6"
• Weight 1.1lb
• Width 3.0"
• Includes (1) 18V CORE18V Lithium-Ion 4.0 Ah Compact Battery

(1) 18V CORE18V Lithium-Ion 4.0 Ah Compact Battery