... FCC, SAA, PSE, ROHS,EK,CB,GS5. Warranty: two year Great FeaturesAdopting MCU (micro control unit) system,switch mode design ... free, VRLA, AGM, etc) 3).Reverse Pulse High TechnologyCombined with MCU system, chargers generate reverse pulse current during the charging ... remove the cover to prevent from being electric shocked direct factory ultipower e-scooter 12v 15a lead acid battery charger