400AH Intelligent Auto Pulse Battery Desulfator to Revive and Regenerate the Batteries for Lead Acid Batteries New Advanced Technology: dissolving sulfates WITHOUT DAMAGING THE BATTERY PLATES Auto-setting for 12-48v, Peak Amp: 4Amax Smart Battery Life Extender, Reduces Evaporation Rational Design: LED light indicates when pulse working Small & Lightweight: easy use, easy carry, cute appearance