This Bosch Pro CORE18V Battery & Charger Starter Kit contains: 1 x 18V ProCORE18V Battery 4.0Ah Li-ion. Bosch ProCORE18V Li-ion Batteries feature a new generation of cell technology that delivers the same performance as a standard batteries in an optimised size and weight. The battery also features COOLPACK 2.0 technology for superior heat dissipation from the inside to the outside of the battery. As heat can damage the cells, this COOLPACK 2.0 technology provides an impressive 135% longer lifetime than standard batteries, enabling it to perform for longer work periods. Compatible with all tools and chargers of the Bosch Professional 18V System and the AMPShare Alliance. 1 x 18V GAL 18V-40 Professional Compact Charger with a 4 A charging current for fast charge times. It charges a GBA 18V 4.0 Ah battery up to 80% in only 48 minutes and a GBA 18V 2.0 Ah battery up to 80% within 24 minutes. This compact charger is part of the Bosch Professional 18V System and is 100% compatible with all Bosch Professional 18 V batteries. Additionally the GAL 18V-40 offers a wall mounting option. Also compatible with AMPShare, the multi-brand battery alliance.