BMS 3S (12.6V – 25A) Lithium Battery Protection Module with Balanced

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3S 11.1V 25A 18650 Li-ion Lithium Battery BMS Protection PCB Board With Balance Function.


  • Overvoltage range: 4.25 ~ 4.35v ± 0.05v
  • Over-discharge voltage range: 2.3 ~ 3.0v±0.05v
  • Maximum operating current: 0 ~ 25A
  • Maximum transient current: 34 ~ 40A
  • Quiescent current: less than 30uA
  • Internal resistance: less than 100m
  • Working temperature: 40 +50 C
  • Effective life: more than 30000h
  • Short circuit protection: Yes, delayed self-recovery
  • Size: 56mm x 45mm x 1.2mm (LxWxH)


  • Strictly according to the diagram wiring: 0V(B-) 3.7V(B1) 7.4V(B2) 11.1V(B+), Do not deliberately short circuit.
  • After the wire is connected, it needs to charge the batteries first, then have output.
  • When the battery is connected in series with 3 groups , please ensure that the voltage of each battery is the same. If not the same, please fill in each set of batteries and then use them.
  • Do not mix the good battery and the battery.
  • It will be better the capacity of the battery internal resistance is closer.


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