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4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

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    Feature:

    4 string 16.8V 40A lithium battery protection board (comes with recovery function-AUTO Recovery)
    Scope: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery)
    Product Size: 45 * 55 * 3.4mm (Standard Edition / Enhanced), 46 * 60 * 3.4mm (balanced version)
    Product weight: 9.3g (standard / enhanced version), 10.3g (balanced version)
    Charging voltage: 16.8V - 18.1V
    Continuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use)
    Continuous charge current (upper limit): 20A
    Equalization version: suitable for starting current below 80A, power 135W below the drill.
    Project Min. Typ. Max. Units
    Consuming current 12 18 24 uA
    Overcharged protection voltage 4.2 4.25 4.3 V
    Balanced starting voltage 4.17 4.2 4.23 V
    Equilibrium current 95 100 105 mA
    Balanced heating power 1.56 1.72 1.91 W
    Overcharge recovery voltage 4.1 4.15 4.2 V
    Over-discharge protection voltage 2.4 2.5 2.6 V
    Overvoltage protection after over-discharge protection 2.8 3 3.2 V
    Overvoltage protection after over-discharge protection 3.2 3.5 3.8 V
    Over-discharge recovery voltage 2.9 3.2 3.3 V
    Conduction internal resistance 2.5 3 3.5
    Overcurrent protection current C 70 80 90 A
    Overcurrent delay time 100 150 200 ms
    Continuous operating current 0 40 40 A
    Continuous output power 0 672 672 W
    Ambient temperature -40 25 85 °C
    Troubleshooting:

    Fault phenomenon Fault check and cause The solution
    Unable to charge Measuring the voltage of 4 groups of batteries. Pair the battery pack well, do not mix
    when one of the battery voltages exceeds 4.25V, the good battery and the bad battery.
    the protection board will activate overcharge protection.
    Unable to discharge Measuring the voltage of 4 groups of batteries. Pair the battery pack well, do not mix
    when one of the battery voltages is lower than 2.7V, the good battery and the bad battery.
    the protection board will activate the over-discharge
    protection.
    Charging/discharging OV, 4.2V, S.4V, 12.6V, 16.8V miswired Rewire or replace the new board
    failure (human failure, no warranty)
    Overcharge/overdischarge OV, 4.2V, 8.4V, 12.6V, 16.8V miswired Rewire or replace the new board
    failure (human failure, no warranty)
    Discharge protection Check that the battery pack has sufficient discharge Replace the battery pack with a higher
    capability and check that the load"s starting current discharge capacity, or a protective
    exceeds the overcurrent protection current of the plate with a larger current
    protection board. (super working range)
    Component soldering There is no connection between one of the components Repair welding
    and the PCB pad.
    Component welding There is a short circuit between two or more pins of the Remove the component and re-weld
    component.
    Electrostatic breakdown A In the unpowered state, measure the G, D, and S Remove the replacement MOS tube
    poles of the MOSFET. If the forward and reverse
    resistances of any two pins are 0Q,
    it indicates that it has broken down.
    Electrostatic breakdown B Remove the MOS tube and measure the resistance Remove the replacement MOS tube
    of the G and D, G and S poles of the MOS tube.
    If there is a resistance indicating that it has broken
    down, the resistance should be infinite.

    Package includes:


    1 x Battery Protection Board


    Reviews(209)
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    Questions & Answers(18)
    Q: What does "(comes with recovery function-AUTO Recovery)" actually mean?
    3 answers
    Q: Do you sell a high MAh 4s battery pack for a drill to go with this BMS?
    3 answers
    Description
    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module


    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

    4S 40A Li-ion Lithium Battery 18650 Charger PCB BMS Protection Board with Balance For Drill Motor 14.8V 16.8V Lipo Cell Module

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