Use and maintenance of the charger : 1. When charging, first connector to the battery, then connect to AC; after full, cut off AC, then pull the battery plug. If you pull the battery plug first while charging, especially when the charging current is large (red light), it is very easy to damage the charger.2. When the LED light turns green, please continue charging for 2-3 hours.3. Please do not run out of battery power, then charger. Otherwise the battery cannot be protected or even damaged.4. long-term shallow discharge battery, about 3 months, for a deep discharge, is the so-called re-lighting, which is conducive to the activation of long-term immobile material in the deep part of the battery. Luminous means that riding the controller battery undervoltage protection action.5.Please use the charger in a dry place in time.6.When you do not use the charger, do not always connect the power supply.7.Please confirm your battery, Because it is used to charge the lithium battery. Do not use the charger on the LiFepo4 battery, otherwise the charger will be got incredibly hot.Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on.This charger For Ninebot Es1 Scooter.For Ninebot Es2 Scooter.100% New and high quality Super strong protection.lnput : 100-240VAC,50/60HzOutput : 42V 2ACharge indicator:Charging the red light is full of green lightSecurity protection: OVP/OCP/ Overload protection/ Short-circuit protectionMaterial:plasticcolour:BlackPackage Contents:1 x ChargerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.