HomeSensors & Modules4s Bms 4s 40a Bms Li-ion Battery Protection Board Balanced Version In Pakistan

4s Bms 4s 40a Bms Li-ion Battery Protection Board Balanced Version In Pakistan

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Rs. 372

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Features: 4S 16.8V 40A 18650 lithium battery protection board (comes with recovery function-AUTO Recovery) Integrated 10 low load resistance MOS tube, continuous discharge 40A, 100mA balanced current, for electric drill/sprayer/LED lights/low power inverter Continuous discharge current...

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CODE: 11889

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Features:

4S 16.8V 40A 18650 lithium battery protection board (comes with recovery function-AUTO Recovery)
Integrated 10 low load resistance MOS tube, continuous discharge 40A, 100mA balanced current, for electric drill/sprayer/LED lights/low power inverter
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
Scope: Nominal voltage of 3.6V, 3.7V lithium battery (including 18650,26650, polymer lithium battery)
Charging voltage: 16.8V - 18.1V
Balanced version: suitable for starting current below 80A, power 135W below the drill (with balance)
Board Size: approx. 46*60*3.4mm

project	Minimum	Typ.	Maximum.	Units
Current consumption	12	18	24	μA
Overcharge 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
Overload protection voltage	2.4	2.5	2.6	V
Overvoltage protection after overload protection	2.8	3	3.2	V
Overvoltage protection after overload protection	3.2	3.5	3.8	V
Discharge recovery voltage	2.9	3.2	3.3	V
Internal conductivity resistance	2.5	3	3.5	mec
Overcurrent protection current C	70	80	90	A
Overcurrent delay time	100	150	200	RS
Continuous working current	0	40	40	A
Continuous power output	0	672	672	W
Ambient temperature	-40	25	85	° C

>td >Repair by welding

Bug fix:
Malfunction phenomenon	Fault check and cause	Decision
Unable to charge	Measuring the voltage of 4 groups of batteries. when one of the battery voltages exceeds 4.25V, the protection board will activate overcharge protection.	Connect the battery well, don't mix good battery and bad battery.
Impossible to discharge	Measuring the voltage of 4 groups of batteries. When one of the battery voltages is below 2.7V, the protection board will activate over-discharge protection.	Connect the battery well, don't mix good battery and bad battery.
Charge / discharge failure	OV, 4.2V, S.4V, 12.6V, 16.8V are incorrectly connected	Remount or replace a new board (human error, no warranty)
Overcharge / overdischarge failure	OV, 4.2V, 8.4V, 12.6V, 16.8V not properly connected	Remount or replace a new board (human error, no warranty)
Discharge protection	Make sure the battery is sufficiently discharged. power and ensure that the inrush current of the load exceeds the current of the overcurrent protection board.	Replace the battery with a more powerful discharge capacity, or a high current protection plate (super working range)
Soldering components	and the PCB pad.
Welding components	A short circuit between two or more contacts is an integral part.	Remove component and re-weld
Electrostatic breakdown A	In the off state, measure the G, D and S poles of the MOSFET. If the forward and backward resistance of any two pins is 0Q, this indicates that it has broken.	Remove the new MOS tube.
Electrostatic breakdown B	Remove the MOS tube and measure the resistance. poles G and D, G and S tube MOS. If there is resistance indicating that it has broken down the resistance should be infinite.	Remove the new MOS tube.