3800mAh Backup Battery External Power Bank Charger Case for Huawei P9

Descriptions:
- Specially designed for Huawei P9
- Polymer lithium battery, powers your phone standby
- Great material to protect your phone, charging and protecting 2 in 1
- Efficient and safe charging
- The battery has passed the MSDS ( Material Safety Data Sheet )

Specifications:
- Capacity: 3800mAh
- Input: DC 5V 1.8A
- Output: DC 5V 1.8A
- Charging time: 4 hours

Tips:
- Attach the battery case to your phone, and then press the power button, the battery case will begin charging your phone
- When charging the battery case with the phone attached, the phone battery will be charged first. After the phone battery is fully charged, charging of the battery case will begin
- When charging the battery case with phone attached, data transfer is supported