Unlike other cheap and unreliable battery chargers that can damage and destroy $$$ thousands in batteries and equipment… Lester battery chargers protect and extend the life of your equipment. Rugged steel case with compact footprint. Convection cooled with no moving parts that break. Advanced microprocessor control for precise charging and termination. Storage & Refresh mode. Front panel switch. LED indicators. Charger protection. UL listed and approved. DC Output: 36 volts, 25 Amps, for use with these batteries: Wet, AGM, Gel. AC Input: 120 volts, 60 hertz, 1 Phase, 13.5 Amps. 150-305 Amp-Hour Rating.