Features:1. Suitable for Xiaomi M365 and for Ninebot S1 / S2 / S3 / S4 foldable electric scooters and for Ninebot S1/S2/S4 scooter, balance bicycle, electromobile of 36V lithium battery the same type of charging head 42V charger.2. LED charging indicator, the red light is on when charging, and the green light is on when the battery is full.3. 42V-2000MA output can charging quickly and help you to save time.4. It is a perfect replacement for the broken charger.5.Generally, the charging time of 7.8AH battery is about 2.5 hours, which depends on your battery capacity. The larger the battery capacity is, the longer the charging time will be. Specific charging time and battery internal residual power related, it is recommended not to use up the battery power to charge again, as far as possible, the damage to the battery and charger are relatively large.Specification:Type: Battery ChargerColour: BlackModel: JYH-4202DC head interface length & outer diameter: approx. 7mm x 8mm / 0.3in x 0.3inDC head interface inner diameter: approx. 5.5mm / 0.2inOutput: 42V-2000MACharger Size: Approx. 135 x 60mm/5.3 x 2.4inPackage list:1 x Battery charger1 x Power cordNote: .2. Please make sure that the length and diameter of the DC charging head of your device are consistent with our products before purchasing the product.3. Please notethat thenewtype and old type of this product will besent randomly, and make sure you will not mind before ordering.