1.PARAMETER; 42V,2A.Note that the scooter with a battery voltage of 36V.The charger uses 42V voltage,The charger voltage must be greater than the battery voltage to charge normally. High current charge fast and short time. 2A>1.8A>1.5A. | 2.SAFETY FRIST:If the charging is abnormal, please do not disassemble the charger without authorization.Please do not disassemble the charger without authorization.You should stop using it immediately And contact us. | 3.DISPLAY: Indicates charging status with dual LED display. Red light means charging. Green light means charged/disconnect. Blinking light means start voltage is lower than the output start voltage. | 4.HIGH QUALITY:Made of only the highest quality materials and built to last! Our chargers are gauranteed to match the original brand name chargers' quality. | 5.QUALITY ASSURANCEL:100% SATISFACTION GUARANTEE: Buy with confidence, as our premium quality is built to last, and if you're not satisfied with it at anytime within Half a year of purchase, we'll provide a refund or replacement.