Dewalt DCB118 XR FlexVolt Multi Voltage Fast Battery Charger 18/54V Li-ion | DEWDCB118 Charges 54V and 18V Batteries Dewalt DCB118 XR FlexVolt Multi Voltage Fast Battery Charger 18/54V Li-ion | DEWDCB118 The DEWALT DCB118 FlexVolt XR Fast Charger will charge 54 Volt FlexVolt and 18 Volt XR batteries. A bright LED indicator communicates battery charge status: charged, charging, power problem, and battery too hot or too cold conditions. It has a compact design which is wall mountable and is fan cooled so it can charge efficiently between 4°C and 40°C.