The DeWalt DCB548 FLEXVOLT Battery features XR technology, offering full convertibility between 18V and 54V. It is backwards compatible with existing 18V DEWALT products while providing the option to amplify voltage to an unprecedented 54V with 12Ah capacity, making it ideal for powerful construction power tools. This 54V battery delivers exceptional performance with a State of Charge (SOC) Indicator. On a new XR FLEXVOLT power tool, the battery voltage steps up to deliver game-changing performance with extended runtime. It offers the same size as the DCB547 9AH XR FLEXVOLT battery and includes a transport cap for safe transportation, ensuring it is not classified as a dangerous product. It provides 216Wh of Energy and uses 22mm High Capacity Battery Cells. The DEWALT XR Slide Li-ion Battery Pack optimizes power to complete applications quickly, with no memory effect and virtually no self-discharge for maximum productivity and less downtime. A LED state of charge indicator helps manage charging and working time. It is compatible with all 18V XR slide-on tools and XR chargers.