The Ioxus, Inc. 24V uSTART battery support system is a drop-in replacement product that doesn't need special wiring. Using two group 31 batteries in series, with one 24V uSTART in parallel, users can replace their 4D battery in heavy equipment. The ultra capacitor-based product is designed with smart power electronics to assist in starting engines up to 50L for large off-road equipment. Using the available smartphone Bluetooth app, users can look at the voltage of the batteries, the charge level of uSTART, initiate a jump start without connecting any wires, or put the unit into maintenance mode for safe removal or repairs.