Battery Charger Protection BMS 3S 40A 18650 Lithium Board

Battery Charger Protection BMS 3S 40A 18650 Lithium Board

Scope of application: suitable for lithium batteries with nominal voltage of 3.7V and full voltage of 4.2V (including 18650, 26650, polymer lithium batteries, no external size restrictions)
Product size: 41*55*3.4mm(Enhanced version)
Product weight: 8.8g (enhanced version)
Charging voltage: 12.6V - 13.6V
Continuous discharge current (upper limit): 40A (if the heat dissipation environment is not good, please reduce the load current use)
Continuous charging current (upper limit): 20A
Enhanced version: suitable for electric drills with starting current below 80A and power below 130W.

Note : 
1. Successful start of the electric drill requires 3 15C-20C power batteries, or 6 10C-15C power batteries (ordinary 18650 cannot start the electric drill!) !); 0V and 12.6V cables, using copper wire above 3 square millimeters (nickel sheets cannot be used!).
2. Strictly follow the diagram wiring 0V, 4.2V, 8.4V, 12.6V, do not deliberately short circuit.
3. When charging the battery, the "430" resistance heating is normal, indicating that the equalization circuit is working; If the "430" resistor also heats up when not charging, check whether the wrong wire is connected.