Almost every electric bicycle has it. We charge it after riding for a while. Many people don’t know when connecting the charger, they should plug in the socket first or plug in the battery socket first. I don’t know the correct answer. It's no wonder that electric car batteries are not resistant to riding!
First, remember not to plug the socket first, because after the socket is connected, there is a large current at the interface. At this time, if the battery is insufficient, the sudden high-flow impact will cause damage to the battery. This action affects the life of the battery.
Second, plug in the battery interface first. The most correct way is to first connect the charging port of the battery, because this can make the current slowly enter the battery, and after the lamp turns green after charging, it should be guaranteed to float for two hours. It is better to suppress the vulcanization of the battery. Don't rush to pull the power when you are full.
Finally, I would like to remind you that when charging and unplugging the power supply, you must first pull the power plug and then pull the battery plug. The most correct way, don't make a mistake!http://www.sinskivehicle.com/