The use of welding Note B + positive and B-negative can not be reversed
18650 battery Charging board size : 22*17*11mm
Input : 5V 1A (charging red light)
Output : 5V 1.2A (please do not take longer than 1200mA current device)
Lithium voltage : 3V- 4.3V
Charging Interface : Micro USB

Available for various batteries like Polymer ,18650 Lithium ,Cell Phone ,Tablet and MP3 Battery
The step up charging board can be connected to a lithium battery and connected in multiple sections of lithium batteries, as long as the voltage is 3.7-5.5V in parallel(only be connected in parallel, not in series)
Charging instruction : Two versions are shipped randomly.Old Version charge status indication. Red light flashes when charging; Long red light when full;New Version has no lights.
it has protection functions, protect from over-charger / over-discharger/ over-load ( support charger and discharger at the same time )
The image is for illustration

Package Included:
12 X 5V Lithium Battery Charge Protection Board