Heavy duty design meets maximum runtime. Truly durable, high capacity (31.1 Ah) backpack battery for highest productivity and longest runtime. Robust design guaranteed for daily outdoor work in all weathers. LED charge indicators on battery pack, plus exact battery charge percentage readable from adapter simplifies work planning for the user. Fits to advanced ergonomic harness that allows for a perfect fit. The easily detachable battery pack means users can share batteries freely without swapping harnesses. Select product variant below for backpack battery with adaptor and harness.