Product Review

The main function of this board is to power the Raspberry Pi for a period of time like a During this time, the Raspberry Pi will not be restarted due to power outage or unplugged power.
When you use the battery pack to power the raspberry pi, the UPS power is only 0.5W, which can only provide 100mA current. The Raspberry Pi can't completely take power from the AC adapter and must borrow come power from the battery pack to the boost chip, and then output enough..
The current is given to the Raspberry Pi, so when working for a while, the battery is exhausted and the Raspberry Pi is turned off. That's why the Raspberry Pi will turn off after 24 hours when the AC power adapter connect the battery to power the Raspberry Pi..
And you need charge the battery separately for several hours and then use it for raspberry pi again..
It means that the battery only using a micro USB power supply that this would not provide full power to the PI and charge the battery .
We notice many customer concern about this point and now we are designing the new version to fix out this problem and if you have bought this one, please contact us via Amazon mail and we will send you the new version when it come out.

Features:
Battery capacity: 3800mAH
Maximum output current: 2A
Output voltage: 5V ± 0.1V
Standard charging current/voltage: 1.0A/5.0V
Cut-off voltage of fully charging: 4.18V - 4.2V

Package includes:
1 x Rpi Battery Expansion board (with lithium battery)
4 x Copper standoff
4 x Screws
4 x Nuts
2 x layer Acrylic Board
1 x Micro USB cable