If you use your mobile phone with the data line charge can not be charged, please replace a can only charge can not transmit data microUSB line to try, this may be mobile charger in the electricity transmission to the phone.
You can try to connect other phones to the mobile power supply to see if there is a situation where the electricity can not be recharged into the phone, and if not, it could be a phone or data line problem. If the mobile power supply is really out of use, you can send it to repair or directly replace the new mobile power supply.
All types of electrical appliances need to be placed in the dry, low humidity environment, and humidity of the environment for all types of electrical appliances are not conducive to the preservation, so, for your mobile power supply life, please try to put the mobile power in the dry environment.
Regular use of your mobile power supply, each month to the mobile power charge and discharge once, often used. Can maximize the service life of the mobile power supply.
Mobile power is actually a fragile component, the internal components cannot afford to beat. Especially to prevent accidentally landing in the course of use. Do not throw, tap or vibrate the power supply. Dealing rudely with a mobile power supply can damage the internal circuit board.