4S 14.8V 16.8V 20A Peak Li-Ion Lithium Battery 18650 LiCoO2 Protection Board BMS

  • $13.65
Tax included. See the Shipping Rates Table. Calculated at checkout (combined weight and service dependant). Free shipping for orders over $50.
0 in stock Stock expected after Apr 29. You are welcome to place an order. You can click the bell at bottom left to be notified when the item is back in stock.


  • 1 Piece.
  • 4S 14.8V 16.8V 20A Peak Li-Ion Lithium Battery 18650 LiCoO2 Protection Board BMS.
  • For hobby purposes only.
  • 4 series 18650 battery 16.8V 16V 14.8V.
  • 14.8V (Li-ion 18650 or li-ion battery rated voltage).
  • 16.8V (Li-ion battery full charge voltage).
  • 14.4V ( Lipo battery pack rated voltage).
  • 1) this board is not suit high power electronic tools such as screwdrivers and drills.
  • 2)Above 3A device,means the battry discharge rate is more than 3C.
  • 1C rated battery, 2000mah equals 2ah*1=2A max working current.
  • 3C rated battery means 2ahx3=6A Max working current.


    • High-accuracy voltage detection circuit.
    • Terminal of the charger using high voltage device.
    • Built-in three-stage over-current detection circuit (over-current 1, over-current 2, or load short circuit).
    • MOS transistor can control the battery charge and discharge.
    • Low standby current consumption.

      4S LI-ION BMS Parameters

      • Over Charge Voltage: 4.25-4.35v±0.05v.
      • Over Discharge Voltage: 2.3-3.0v±0.05v.
      • Max working current: 10A.
      • Max Peak current: 20A.
      • Working Temperature: -40---+50.
      • Storage Temperature: -40-- +80.
      • Small current: 6uA.
      • Life cycle: 50000hours.
      • Resistance: 45mΩ.
      • Short cut Protection:Protectable, change for repair Size: 35*35*3.0mm.

      BMS solder instructions

      • B+ connected battery positive.
      • B1 the connect point between battery 1 and battery 2.
      • B2 connect the point between battery2 and battery 3.
      • B3 Connect the point between battery 3 and battery 4.
      • B- connect to battery negative end.
      • P- + connection charge / discharge positive.
      • P- connection charge / discharge negative.
      • 4S Li-ion18650,LiCoO2,LiMn2O4,Li(NiCoMn)O2 rechargeable batteries.
      • 4S Lipo rechargeable batteries.

      Customer Reviews

      Based on 1 review
      good product
      Click to edit the product in Ali Orders.
      Note: only show for shop owner