Why the charging will power off or automatically shut down: This is caused by the large internal resistance of the disassembled battery. Check the pairing (of course, it cannot be detected without the instrument) or replace with a new battery. In addition, try to use a better line. If the output current is too large, it will cause power failure protection. If the load current is greater than 1A, use 5V2.1A. It will not be powered off when charging.
What kind of battery should be used for the battery: The battery should be a flat-head 18650 battery, 65mm long, and a pointed battery cannot be used. If you use old batteries, different capacities, and different brands are not available, the disassembled batteries should ensure that each voltage is at least 3.5V or more. If the voltage is too low, put them in and not charge. (Note: You can also use lithium batteries, mobile phones and tablets battery.)
How to distinguish the +/- pole of the battery from the +/- pole of the power box: Generally, the side of the 18650 battery plane is the negative electrode, and the side with the hole is the positive electrode. It must not be installed backwards, it will burn all at once, and it will be useless to install it correctly.
What is the actual conversion rate of this power box: brand new full-capacity real-standard battery, the conversion rate is about 80 or so, because there is line loss when the connection line is added.
Why there is no power output after installing the battery: After installing the battery, you must plug in the 5V charger to activate it before it can be used.
