The circuit board is connected to the battery negative B-, B + is the positive, do not connecting reversed, connecting reversed will burn the board, the battery is connected in parallel welding, assembling battery.
Package contents:
1*PCB Motherboard(Case is not included)
Note:
-The insulation between the battery and the circuit board, battery lead not to touch the circuit board, so as not to cause a short circuit.
-The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness