The built-in quick charger delivers constant current for glow starters, with mounting lug and "ON" LED for optimum ease and convenience. Other great features include a helpful meter and control knob that allow you to adjust glow plug current, detect engine problems, and check for burned-out plugs. The Deluxe Power Panel II measures 6" x 3.75" and comes with 1 set of alligator clips and 2 sets of banana plugs.