BMS 4 String 14.8V/30A

18650 Cell Lithium Battery Protection Board Current Peak 30A Over-Current Protection

200.00 EGP 200.0 EGP 200.00 EGP

200.00 EGP

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Internal Reference: BMS.4S.30A.GREEN

4S 30A 14.8V Li-ion Lithium 18650 Battery BMS Packs PCB Protection Board Balance Integrated Circuits 


  • Overcharge detection voltage: 4.28+ 0.05 V
  • Overcharging voltage: 4.095-4.195V
  • Over-discharge voltage: 2.55±0.08
  • Overcharge detection delay time 0.1s
  • Temperature range -30~80
  • Short circuit detection delay time: 100ms
  • Over-current detection delay time: 500 ms
  • Balanced current: 60mA
  • Working current: 30A
  • Overcurrent: 60A
  • Short circuit protection function: there is, a disconnect the load can be self-recovery.
  • Size:45x56mm

Main function:

Overcharge protection, over-discharge protection function, short circuit protection function, over current protection function, balance. 

Important Cautions:

  1. Strictly according to the diagram wiring - do not make short circuit.
  2. After the wire is connected, it needs to charge the batteries first, then have output.
  3. When the battery is connected in series with 5 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.
  4. Do not mix the good battery and the bad battery.
  5. It will be better if the capacity of the battery's internal resistance is closer.