AstroFlight 112 Deluxe : Smart Charger / Discharger / Analyzer for 1 thru 40 cell packs. Has adjustable Charge current from 50mA to 8A. Charge mode has Auto-Peak, with 10-hr time limit. Full LCD display of current, voltage, time. Runs on 12V power supply (such as the Astro 120 P.S.- sold separately)