Ditch foot pedals, docking bases, and cables with this patented wireless power supply system by Hard Life. Every Nucleus Wireless Power Supply System includes two battery packs, with each offering a run time of 8-16 hours when used with Hard Life Rotary Machines*. With a voltage range of 4v to 11v and 27 output adjustments, the Nucleus Wireless Power Supply puts full control of your power at your fingertips.