12V 7Ah Battery Case
● Empty box without battery.
● 3 strings of 12.6V 40A lithium battery protection board:
● Scope of application: suitable for lithium batteries with a nominal voltage of 3.7V and a total voltage of 4.2V (including 18650, 26650, and polymer lithium batteries, there is no limit to the size)
● Product size: 40*60*3.4mm balanced version
● Product weight: 8.8g
● 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)
● Continuous charging current (upper limit): 20A
● Scope of application: Suitable for electric drills with starting current below 80A and power below 130W.
Note 1:
● Three 15C-20C power batteries or six 10C-15C power batteries are required to start the electric drill (ordinary 18650 cannot begin the electric drill!!!).
Note 2:
● Wiring 0V, 4.2V, 8.4V, and 12.6V strictly according to the diagram, do not intentionally short circuit.
Note 3:
● When charging the battery, it is normal for the "430" resistor to heat up, indicating that the equalization circuit is working; if the "430" resistor also heats up when it is not charging, please check whether the wiring is wrong.
