1.What should be noted when assembling tool battery packs?
18650 power battery cells, model, voltage, internal resistance should be consistent and have good consistency, with 10.8V in 3 series, 14.4V in 4 series, and 18V in 5 series. Be sure to connect the voltage detection line. Try to use better battery cells instead of disassembled ones. We need a spot welding machine.
2. When the protective board is used to replace the original equipment
Before replacing the protective board, it is necessary to measure the voltage of each 18650 battery cell to ensure that the voltage of the battery cells is consistent. The protective board only serves a protective purpose and cannot balance the voltage. Due to the inconsistent voltage of the battery pack, it is not possible to charge or discharge, and simply replacing the protective board is useless. Suggest using a new 18650 battery cell
The wiring diagram is below
Due to the semi refined nature of the packaging, assembling lithium batteries pose certain risks Please purchase with caution Do not retry after welding