The Bosch GBA 18v 4.0Ah ProCORE Battery 1600A016GB has even more power in a compact size, and has a constant power output even under full load. 100% compatible with all new and existing Bosch Professional 18v power tools and chargers. This battery has 87% more power thanks to the latest cell technology and intelligent battery management, and 135% longer life with the COOLPACK 2.0 technology that prevents the battery from overheating.Part of the ”Flexible Power System“ 18 volt range from Bosch. Use it immediately without having to worry about whether it is compatible The ”Flexible Power System“ guarantees compatibility with all new and existing professional power tools and chargers within the same voltage class High-performance: +87% more power Significantly smaller size and better weight Airtight cells Improved copper cell connection Optimised performance and long battery life thanks to CoolPack 2.0 technology Constant power output even under full load Power output similar to a wired device with 800 W for Bosch ProCORE optimised device