Convertible battery pack. Features 22mm high capacity battery cells delivering 216Wh of energy for longer runtime without increasing the size and weight, with voltage steps up to 54V for excellent power delivery. State of Charge (SOC) indicator to visualise runtime. Ideal for high demand or high powered applications with Dewalt 18V XR and 54V XR Flexvolt tools. Compatible with all 18V XR chargers.