Characteristics: 1. Suitable for Xiaomi M365 and for Ninebot S1/S2/S3/S4 folding electric scooters and for Ninebot S1/S2/S4 scooter, balance bike, electromobile with 36V lithium battery same type 42V charging head 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 charge quickly and help you save time. 4. It is a perfect replacement for your broken charger. 5. In general, the charging time of the 7.8AH battery is approximately 2.5 hours, which depends on the battery capacity. The greater the battery capacity, the longer the charging time will be. Due to the specified charging time and the internal residual power of the battery, it is recommended not to consume the energy of the battery for recharging, as far as possible, the damage to the battery and charger is relatively large. Specification: Type: battery charger Color : black Model: SLS-4202 DC head interface length outer diameter: approx. 10mm x 8mm / 0.4in x 0.3in DC Head Interface Inner Diameter: Approx. 5.5mm / 0.2 inch Input: 110-220VAC, 50 / 60HZ, 1.5A Output: 42V-2000MA Plug type: 110-240V/EU US plug Charger Size: Approx. 135x60mm/5.3x2.4 inches Package List: 1 x battery charger 1 x power cord Note: 1. Please kindly note if you need a plug adapter. 2. 3.