Starter Set 2 x GBA 18V 4.0Ah + GAL 18V-40, 2 x 18 V battery with 4.0 Ah capacity for extended runtime and fast charger, 18 V 4.0 Ah battery with extended runtime for all 18 V class tools, Extremely fast charging speed for all 18 V batteries, charging a standard 18 V 4.0 Ah battery to 80% in only 48 minutes, Compatible with all Bosch Professional 18 V t