18650 Battery Charger module 5V 1A Module for PowerBank
Input Micro USB: 5V 1A
USB Output: 5V 1A
Batteries Type: Lithium-ion batteries (18650)
Battery Quantity: Can operate up-to 3 batteries in parallel
First connect all your batteries (maximum 3 nos.) in parallel to make a battery pack.
Then connect a thick copper wire from -ve of battery pack to B-
Now connect a thick copper wire from +ve of battery pack to B+
*** DO NOT CONNECT IN REVERSE POLARITY ***
Connecting the batteries in reverse will burn the board.
Put an insulation between the battery pack & this module to avoid any short circuit