The MX FUEL™ Portable Battery Extension allows users to operate any MX FUEL™ Equipment while taking all of the weight of the MX FUEL™ battery out of their hands, delivering lighter tool weight and reduced fatigue on handheld equipment. The MX FUEL™ Portable Battery Extension maintains peak performance, providing the same power users would expect from any MX FUEL™ Equipment. Fully compatible with all MX FUEL™ batteries, this solution allows users to benefit from maximum runtime able to be leveraged from the most capable MX FUEL™ batteries without compromising on weight and ergonomics. The 2.4 m tether adaptor provides users the flexibility to operate handheld equipment from the ground, a lift, a ladder, or scaffolding. The backpack harness with adjustable straps, and integrated carrying handle provide easy transport. Easily remove the backpack harness as needed for use in stationary applications. The Portable Battery Extension's durable construction enables use in the toughest jobsite conditions.