DeWalt DCB546-XJ XR 6.0 Ah Flex-volts Convertible 18V/54V Lithium-Ion Battery

World's first convertible power tool battery pack. 54v Battery that has unprecedented levels of power. Compatible with all 18v XR and 54v XR FLEXVOLT tools. It can switch itself to 18v so is compatible with existing 18v system. 1 X DeWalt DCB546 Battery.