one
If the magnetic charging mode, the charging port has stains or long-term contact with sweat resulting in the charging shock being oxidized, you can use alcohol to wipe the charging shock port to ensure good contact between the watch and the charging cable when charging;
two
Try replacing the charging cable or charger;
three
If the watch is not used for a long time, the watch is excessively discharged, and it needs to be charged for a while (more than 15 minutes), and then long press the watch button to start;
four
The watch temperature is high, in order to safely trigger the charging protection, it is recommended to stand still for a while and wait for the watch temperature to decrease before charging;