BMS 5 String 18.5V/15A

18650 Cell Lithium Battery Protection Board Current Peak 15A Over-Current Protection

250.00 EGP 250.0 EGP 250.00 EGP

250.00 EGP

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Internal Reference: BMS.5S.15A

5S 15A Li-ion Lithium Battery 18650 Charger PCB BMS 18.5V Cell Protection Board Integrated Circuits 


  • Size: 90 * 16 * 3.0mm
  • Continuous discharge current: 15A(max)
  • Instantaneous discharge current: 25A
  • Charge voltage: 21V
  • Charging current: 15A(max)
  • Overcharge Protect: Over-charge detect: 4.28±0.05V & Protect delay: 0.5s
  • Over-charge release: 4.28±0.05V
  • Over-discharge Protect: Over-discharge detect: 2.55±0.08V & Over-discharge detect delay: 0.1s
  • Release voltage: 2.9±0.1V
  • Short-circuit Protect: Protect condition: Cut load & Detect delay: 250uS
  • Release condition: Cut load
  • Over-current Protect: Detect voltage: 150mV & Detect delay: 9mS
  • Current detect: 30±3A
  • Release condition: Cut load
  • Inner Resistance: ≤20mΩ
  • Self-consumption: Working current: ≤30uA
  • Sleep current: (when over-charge)≤10uA
  • Working Temperature Range: -30-+80℃

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.