The ProCORE18V 5.5Ah Professional is a powerful battery from the Bosch ProCORE18V range that delivers the power of a corded tool with up to 1,800 watts. Combined with Bosch's intelligent battery management, this model's cell technology delivers 87% more power than conventional batteries. For even more flexibility, it is compatible with new and existing Bosch Professional 18-volt tools and chargers (Professional 18V System). For superior heat dissipation on the battery from the inside to the outside, the battery also features Coolpack 2.0 technology. As heat can damage cells, Coolpack 2.0 technology provides an impressive 135% longer battery life compared to standard batteries, enabling longer operating times. The ProCORE18V 5.5Ah Professional is a lithium-ion battery with charge level indicator.