18V 4.0 Ah Lithium-Ion Compact Batteries S4721

Bosch GBA18V40-2PK 18V CORE18V Lithium-Ion 4.0 Ah Compact Batteries, 2-Pack

• 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 the jobsite all day
• 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
• System compatibility – features compatibility with Bosch 18V Lithium-ion tools and chargers

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. 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. This new-gen CORE18V still features compatibility with BOSCH 18V Lithium-ion tools and chargers.