1)5000mah rechargeable backup battery charger back pack battery case:
* capacity: 5000mah
* output: 5.0v/2.0a
* input: 5.0v/2.0a
* charging time: 4-6 hours.
* the led lights indicate how much power is left in your phone battery case.
( 4led>100%, 3led>75%, 2led>50%, 1led>25% )
here is the instruction of how to use this backpack power station.
* push power button to turn on battery pack. You should see one or more blue leds light up.
* if you can see blue led light up, it means the battery pack is on.
* if you see no blue led light, then push the power button again to turn on battery pack.
* plug in your cellphone into the battery pack when it is on, the battery pack should start charging you cellphone.
* if not charging, please push the power button to switch battery pack to phone charging mode so it will start charging your cellphone.
* to charge the battery pack itself, connect battery pack to a usb cable thru the bottom usb port to wall charger, the battery pack should now be charge