Kit Contents: 2 x 5.0 Ah Li-Ion batteries GAL18V40 Fast Charger The Bosch GAL18V-40 1600A019RK charger has a modern compact design. With an optimised charging speed for compact 18V batteries, charges a 18V 2.0Ah battery in 24 minutes to 80%. 100% compatible with all Bosch professional 18V batteries. Features and Benefits: Compact: Due to its modern design it is very compact. Optimised charging speed: Optimised charging speed for compact 18 V batteries as it charges a 18 V 2.0 Ah battery in 24 mins to 80%. Professional 18V System: 100% compatible with all Bosch Professional 18 V batteries. Efficient Bosch cooling technology in and around the battery prevents heat damage, gives up to 65 percent longer run-time and up to 100 percent longer lifetime. 5.0Ah Cool Pack cells have finer 'windings' than 3.0Ah allowing more power density in the same pack size with less electrical resistance, making it more efficient.