A method of charging that quickly charges the battery to or near a full state in a short period of time. Fast charge can be used for fast charging of electric vehicles and fast charging of mobile phones. In today's fast-paced era, fast charging can meet people's demand for mobile phone power, because mobile devices such as mobile phones are often used by people, sometimes when there is no electricity, and when they are in a hurry, fast charging is a good solution. This problem. As long as you plug in the fast charge, it will take a long time to restore the full power status, and you will feel safe.