Compatible with all Bosch Li-ion ‘slot-in’ batteries. GAL 3680 CV fast multi-voltage charger Battery charging voltage: 14,4 - 36 VCharge current: 8.0 ACharging time at battery capacity 2.0 Ah (80%/100%) approx. 15/30 minsCharging time at battery capacity 4.0 Ah (80%/100%) approx. 25/35 minsCharging time at battery capacity 5.0 Ah (80%/100%) approx. 35/45 minsCharging time at battery capacity 6.0 Ah (80%/100%) approx. 35/50 mins