Protection Circuit Module [PCB] for 11.1V (3S) Li-ion Battery Pack (Cutoff 5.7A)

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Our Price: $12.99
Item Number: 32006

Quantity Discounts

5 to 10$12.47
11 to 20$12.34
21 to 59$12.21
60 to 99$12.08
100 or more$11.95

Features and Benefits

  • Protection Circuit Board for 11.1V 3 cells Li-ion and Li-polymer battery pack
  • Designed for 11.1V Li-ion or Li-Polymer battery
  • Prevents 11.1V Li-ion  or Li-polymer battery from over-charging, over-discharging and from discharging current more than 5.7A
  • Internally trimmed charge and discharge voltage limits
  • Discharge current limit detection
  • Low current standby mode when cells are discharged
Connection Instruction
  • B+Connected to the third batterys positive terminal
  • B3+Connected to the second batterys positive terminal
  • B2+Connected to the first batterys positive terminal
  • B1+No connected
  • B-Connected to the first batterys negative terminal
  • P+Connected to the batterys output or the chargers positive terminal
  • P-Connected to the batterys output or the chargers negative terminal

Technical Specifications




Over charge Protection

Over charge detection voltage


Over charge release voltage


Over discharge protection

Over discharge detection voltage


Over discharge release voltage


Rated operational current


Over current protection

Over current detection current


Detection delay time


Release condition

Cut load

Short protection

Detection condition

Exterior short circuit

Release condition

Cut short circuit

Interior resistance Main loop electrify resistance RSS30m

Current consumption

Current consume in normal operation

30A Max




Download data sheet here.

Application Notes

  • Do not subject the PCB to input voltage over 20V. Input voltage over 20V will damage the PCB.
  • Please use the compatible charger for your battery pack. Pay special attention to your input and output voltage current to avoid PCB damage.
  • When mixing over-charged batteries and over-discharged batteries together, PCB will be in dual state of over-charging and over-discharging. In this situation, charging and dis-charging are both disabled.
  • Internal static charge protection circuit built into the PCB. However, do not subject the PCB to high static charge to avoid damage.
  • Without the written agreement from us, please don't use this PCB for application in medical instruments, emergence devices, auto and airspace vehicles or other device that might have impact on human body.

Because of the very high energy density, Li-Ion Battery pack must be connected to a protection circuit module to prevent  accidental battery explosion caused by over-charging or over-discharging.

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