Technical data: Cell type: Li-Ion Voltage: 54/18V Battery capacity: 3.0/9.0Ah. Compatible with: all 18V XR and 54V XR FLEXVOLT tools Compatible with: all 18V XR chargers XR FLEXVOLT 54/18V 3.0/9.0Ah Battery The DeWalt DCB547 is a new generation dual voltage battery with 54V and 18V ranges, making it compatible with all 54 XR FLEXVOLT power tools and 18V XR power tools and chargers. The battery allows you to operate in dual voltage ranges 54V (3.0Ah) and 18V (9.0Ah). The operating efficiency of power tools powered by a 54V Li-Ion battery is similar to that of mains-powered devices. ** Illustrative photos.