The DEWALT DCM571X1 FlexVolt XR Trimmer is supplied with: 1 x 18/54V 9.0/3.0Ah FlexVolt Li-ion Battery 1 x 8 Amp Li-ion Charger 1 x Shoulder Strap 1 x Trimmer Line 2mm x 7.5m 1 x 25cm Brushcutter Tri-Blade DEWALT FlexVolt XR batteries stand at the forefront of cordless technology. They are the world’s first convertible 18/54V batteries, offering unprecedented levels of power. Provides the unique ability to power heavy-duty construction power tools whilst still being compatible with existing DEWALT XR 18V products and offering increased runtime. No Load Run time with Line = 54 mins (Low Speed), 44 mins (High Speed), using a 54V 3.0Ah Li-ion battery.