Features
1. Place 5 21700 flat head batteries, solderless and reusable DIY battery case. (batteries not included)
2. Power display, intelligent automatic shutdown in non working state, long press or double click to turn on LED light; Reverse installation does not burn the motherboard.
3. Easy to install, no difficulty, no need for welding or secondary processing, only the battery needs to be installed correctly and assembled for use. It can be repeatedly disassembled and replaced.
4. It is a good companion for home/outdoor activities, easy to operate, and easy to disassemble and install.
5. Do not support pointed batteries. Instead, use 21700 flat headed batteries. Do not use aging batteries. Poor use of batteries can result in inability to output, especially when used in other places for a long time and disassembled for use. (To purchase such DIY products, it is necessary to have a certain understanding of this, otherwise improper operation may cause other problems such as burning the motherboard.)

Please Note: It does not support 3.2V iron phosphate batteries. Do not use damaged batteries, do not put batteries that do not meet the requirements, and do not modify/weld products. The production of this product poses a high safety risk, please be cautious!

Specification
Applicable battery: 3.7V21700 battery (flat head - standard with a diameter of 2.1cm and a length of 7cm) (not included)
Output: Dual USB interface
Input interface: Type-C port (PD not supported) micro Android interface
Output power: 12W
Single USB output: 5V/0.1-2.1A;
Dual USB output: 5V/0.1-2.4A;
IN input (micro/type C): 5V/2.1A (MAX)

Package Included
1x 21700 battery box (batteries not included)