This is the problem of the charging treasure, when the mobile phone charging reaches nearly saturation, the charging current becomes smaller, the charging treasure will automatically disconnect the charging, it is recommended to use the charger to charge, the charging treasure is only used to go out and emergency
The charging bank does not automatically power off the phone when it is fully charged is related to the chip of the root charging bank that the voltage doubler has been opened, and the charging bank does not power off is the problem of the charger.