Heavy-duty backpack battery with high capacity for outdoor work far from the nearest power outlet. Robust design guaranteed to withstand daily professional use in all weather. LED charge indicators on battery pack, plus exact battery charge percentage readable from adapter simplifies work planning for the user. Advanced ergonomic harness allows a perfect fit, and the easily detachable battery pack means users can share batteries freely without swapping harnesses. Detachable support foot for free-standing use ensures all day comfort and productivity, and reduces the risk of the harness getting wet and dirty.