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 * 3.4mmProduct weight: 9.8gCharging voltage: 12.6V – 13.6VContinuous discharge current (upper limit): 40A (if the cooling environment is not good, please reduce the load current use)Continuous charge current (upper limit): 20ANote 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).ProjectMin.Typ.Max.UnitsNotesConsuming current121824uAOvercharge protection voltage4.24.254.3VBalanced starting voltage4.174.24.23VBalanced versionEquilibrium current95100105mABalanced versionBalanced heating power1.171.291.43WBalanced versionOvercharge recovery voltage4.14.154.2VOver-discharge protection voltage2.42.52.6VOvervoltage protection after over-discharge protection2.833.2V1C dischargeOvervoltage protection after over-discharge protection3.23.53.8V2C dischargeOver-discharge recovery voltage2.93.23.3VConduction internal resistance2.533.5mQOvercurrent protection current708090AOvercurrent delay time100150200msContinuous operating current04040AResistive loadContinuous output power0504504WResistive loadAmbient temperature-402585°CTroubleshooting:Fault phenomenonFault check and causeApproachUnable to chargeMeasure 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 dischargeMeasure 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 failureOV, 4.2V, S.4V, 12.6V miswiredRewiring or replacing a new board (human failure)Overcharge/overdischarge failureOV, 4.2V, 8.4V, 12.6V miswiredRewiring or replacing a new board (human failure)Discharge protectionCheck 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 solderingThere is no connection between one of the components and the PCB pad.Repair weldingComponent weldingThere is a short circuit between two or more pins of the component.Remove the component and re-weldElectrostatic breakdown AIn 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 tubeElectrostatic breakdown BRemove 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
