Apple charging bank charging mobile phone, old power off, representing the charging rate of Apple charging bank, and charging speed is not very good? It has been aging, it can be said to buy a new one, or charging treasure charging this is because the output of the mobile power supply does not match the current of the mobile phone charging input. When the mobile power supply is charging the mobile phone, it must first sense the current of the mobile phone before it will charge normally. When the mobile phone is charging, due to the sense of the output is relatively small, generally in order to protect the battery, it will look at the charging. At this time, the mobile power supply can not sense the current of the mobile phone, it will automatically shut down, so there will be an automatic power failure