The Bosch GBA 36V Professional Battery is a powerful battery designed for maximum runtime in Bosch´s 36V category. COOLPACK 1.0 technology achieves an improved heat dissipation from the inside to the outside of the battery. As heat can damage the cells, the COOLPACK technology provides a longer battery lifetime and enables it to perform for longer work periods. There is also a fuel gauge displaying the battery level status. Compatible with all Bosch Professional 36V tools and chargers.