DeWALT XR Flexvolt: the world’s first 18/54 Volt convertible battery pack system. A 54 Volt battery that has unprecedented levels of power, finally giving you the power you need from a cordless tool. That's not all though - it can switch itself to 18 Volt so it is compatible with your existing 18 Volt XR power tools, offering extended run time meaning you don't need to replace your existing kit - not even your 18 Volt XR charger, as these batteries are compatible!
Compatible with all 18 Volt XR and 54 Volt XR FLEXVOLT tools.
On a traditional XR powertool the XR Flexvolt battery operates at 18 Volt and delivers extended run time.