Because it will be based on the battery temperature, current, voltage standards for protection.
Charging to a certain extent will automatically suspend charging. Intelligent charging protection is a new battery protection function added to some models. When you charge for a long time, the built-in AI in the system can learn the charging habits of the phone, read your alarm clock, time zone and other configuration information, and intelligently manage the charging state, such as suspending the charging when charging at night to about 80% of the power, and resuming the charging until 100% before the user gets up, to avoid the battery being in for a long time Full charge state, effectively extend battery life. Because the mobile phone charging cable is a special wire special process, and has intelligent protection function, it can be charged to protect itself without damaging the mobile phone.