Functions:
1.Made of premium material, it is wear resistant and durable.
2.LCD digital display, easy for you to monitor the real-time battery bank capacity, real-time voltage and current.Type c and micro usb ports are input charge ports for rechargeable batteries & power bank.
3.Two usb ports are output ports for charging cell phones.
4.DIY design, easy and convenient to use.Can be installed 8 18650 lithium battery.

Specifications:
Input: 5V 2A
Output: 5V 2A
4*18650 Capacity: 15000 mAh
6*18650 Capacity: 20000 mAh
Port:2x USB, 1x Type C ,1x Micro USB
Battery: 8x 18650(not included)
Color: black/white

Note:
1.''6x18650''does not support disassembly after installation
2.Do not use pointed batteries.Batteries with damaged appearance are not use .It is not recommended to use the battery with high internal resistance, long storage time and many times of use