cleanpower Lead Acid Batteries 12v 24v 36v 48v Battery Regenerator 2A Auto Pulse Desulfator, Blue New Advanced Technology: dissolving sulfates WITHOUT DAMAGING THE BATTERY PLATES Auto-setting for 12-48v, Peak Amp: 2Amax Smart Battery Life Extender, Reduces Evaporation,Charge Faster Rational Design: LED light indicates when pulse working Small & Lightweight: easy use, easy carry, cute appearance