Features:
Can install 6x 18650 batteries (batteries are not included).
Provides extra backup power for all devices supporting USB charging.
Dual USB output design, can charge 2 devices simultaneously.
Plug and Play, output power using the USB port, easy to use.
Environmentally friendly and economic efficiency.
Note:
1. You need to buy 18650 batteries in addition and weld on your own.
2. The digital display screen is not a real one.