3S 40A Li-ion Lithium Battery Charger Protection Board PCB BMS For Drill Motor 11.1V 12.6V Lipo Cell Module With Balance COD

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ID: 1394450
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                    Description:
                     
                    Suitable for starting current below 80A, power 135W below the drill. (with balance) 3S 12.6V 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: 41 * 60 * 3.4mm
                    Product weight: 9.8g
                    Charging voltage: 12.6V - 13.6V
                    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
                     
                    Note 1: The successful start of the drill requires three 15C-20C power battery, or six 10C-15C power battery (ordinary 18650 cannot start the drill!!).
                    Note 2: Strictly according to map wiring 0V, 4.2V, 8.4V, 12.6V, do not deliberately short circuit.
                    Note 3: When soldering the battery for the first time or while charging, as long as the single battery exceeds 4.2V, the "430" resistor will heat up and discharge (discharge to about 4.19V to stop heating). If the "430" resistor is severely hot, check if the wrong line is connected.
                     
                    For some of the poor basis of electronic customers to explain:
                     
                    Balanced charge is only auxiliary functions, try not to put a good battery and poor battery mixed together! 3 sets of battery capacity / resistance closer to the better! (2 good battery +1 Poor battery use effect = 3 poor battery use effect).

                    Project Min. Typ. Max. Units Notes
                    Consuming current 12 18 24 uA  
                    Overcharge protection voltage 4.2 4.25 4.3 V  
                    Balanced starting voltage 4.17 4.2 4.23 V Balanced version
                    Equilibrium current 95 100 105 mA Balanced version
                    Balanced heating power 1.17 1.29 1.43 W Balanced version
                    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 1C discharge
                    Overvoltage protection after over-discharge protection 3.2 3.5 3.8 V 2C discharge
                    Over-discharge recovery voltage 2.9 3.2 3.3 V  
                    Conduction internal resistance 2.5 3 3.5 mQ  
                    Overcurrent protection current 70 80 90 A  
                    Overcurrent delay time 100 150 200 ms  
                    Continuous operating current 0 40 40 A Resistive load
                    Continuous output power 0 504 504 W Resistive load
                    Ambient temperature -40 25 85 °C  
                     
                    Package includes:
                     
                    1 x Battery Protection Board 

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























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