Description This DEWALT DCB104 charger is a 4-port fast charger that charges 12-volt MAX and 20-volt MAX batteries at the same time. This fast charger quickly charges a 4.0Ah 20V MAX battery in 40 minutes, and a 6.0Ah 20-volt MAX battery in 60 minutes. It is also designed to fit our Tool Connect Tag, and is ToughSystem compatible.