The Bosch CORE18V Compact Battery is the next-gen lithium-ion battery that keeps the power and run time while losing the weight. The GBA18V40 single-layer battery features advancements in design to reduce resistance and increase efficiency, as well as improving 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 run time 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 cools 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
• System features compatibility with all Bosch 18V lithium-ion tools and chargers
• Works in cold weather conditions down to -4° F

• Battery Voltage: 18V
• Amp Hours: 4.0 Ah
• Battery Chemistry: Lithium-Ion
• Warranty: 1 year limited; 2 years with ProVantage

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