Bosch Battery Starter Set: 2 x GBA 4Ah ProCORE 18V Batteries + GAL 18V-40 Charger

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.