Normal charging treasure, the use of certainly not your charge for a while, will automatically shut down, stop charging, abnormal, that is, the charging treasure has been damaged. The usual charging treasure, the circuit is simple, that is, the internal lithium battery through the switching power supply circuit booster device, the lithium battery voltage to 5V, and then through the USB interface output, to charge the mobile phone, in your case, the vast majority of the internal booster device burned out, the usb interface no 5V voltage, the charging treasure output detected low voltage, The automatic protection turns off the charging bank circuit and hibernates.