Battery charging voltage*: 14,4 – 18 V; Charge current*: 6 A; Weight*: 760 g; Charg. time at bat. cap. 1.5 Ah (80%/100%) approx. 10/25 mins Charg. time at bat. cap. 2.0 Ah (80%/100%) approx. 15/35 mins Charg. time at bat. cap. 3.0 Ah (80%/100%) approx. 20/35 mins Charg. time at bat. cap. 4.0 Ah (80%/100%) approx. 30/45 mins Charg. time at bat. cap. 5.0 Ah (80%/100%) approx. 45/65 mins Charg. time at bat. cap. 6.0 Ah (80%/100%) approx. 50/75 mins