Dewalt DCB548 FLEXVOLT Battery XR technology fully convertible 18/54v DeWALT Battery backwards compatible with existing 18v DEWALT products, yet with the option to amplify voltage to an unprecedented 54v X 12Ah great for use on larger more powerful construction power tools. A 54V Battery that has unprecedented levels of power State of Charge (SOC) Indicator On a new XR FLEXVOLT power tool the battery voltage steps up to deliver GAME CHANGING LEVELS OF PERFORMANCE One battery for multiple use and extended runtime Same size as DCB547 9AH XR FLEXVOLT battery Includes transport cap for safe transportation of batteries meaning it isn't a class 9 dangerous product 216Wh of Energy 22mm High Capacity Battery Cells Pack of 2 Batteries supplied