Car Starting BMS

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XJ-D426 4S 12V 100A/120A BMS Car Start BMS for Lifepo4/Li-ion Battery Packs

The device has a maximum continuous current of 100A/120A and an impressive peak current of 1100A. It's a protection board solution tailored for vehicle - starting 4S 12V Lifepo4 battery packs.

Model XJ-D426
Series 4S
Current 100A/120A
Voltage 12V
Cell Type LifePO4/Li-ion/Sodium-ion Battery
Function Over charge protection, Over discharge protection, Over current protection, Short-circuit protection, Balance function, NTC Temperature Protection function, Electrostatic protection, Dust Protection, Moisture Protection
Warranty 24 Months
Board Size 145*65*13MM
OEM/ODM Acceptable
Application EV Car starting/Motorcycle starting/Electric Boats

details

description

Function	Test items	Specification
Function	Test items	Minimum	Typical Value	Maximum	unit
Operating voltage	Voltage range	8	--	35	V
Operating voltage	Charging current (continuous)		50		A
Working current	Discharge current (continuous)		1 50		A
Working current	Charger voltage ( CC - CV )	15.2 ± 0.2			V
Charging protection	Overcharge protection voltage	3. 65	3.7	3.75	V
	Overcharge protection delay time	700	1000	1300	mxD
	Specification: Protection circuit module	Model : XJ-D426-4S-200A
	Page : 6 Total :12	Date : 2024-5-8
	Overcharge protection recovery voltage	3.45	3.5	3.55	V
	Over discharge protection voltage	1.95	2. 00	2. 05	V
Discharge protection	Over discharge protection delay time	700	1000	1300	mxD
	Over discharge protection recovery voltage	2. 3 5	twenty four	2. 4 5	V
	Charge overcurrent protection value		50		A
	Charge overcurrent delay	700	1000	1300	mxD
	Charge overcurrent release recovery conditions	Built-in charging overcurrent protection
	Discharge overcurrent 1 Protection current value	400	450	500	A
	Discharge overcurrent 1 Protection delay	700	1000	2000	mxD
	Discharge overcurrent 2 Protection current value	700	800	900	A
Overcurrent protection	Discharge overcurrent 2 Protection Delay	350	500	1000	mxD
	Discharge overcurrent protection recovery conditions	Disconnect load or activate charging
	Short circuit protection delay time	230	330	430	uS
Short circuit protection	Short circuit protection recovery	Remove the short circuit and disconnect the load
	Short circuit current	1200-2400A
	Balanced start voltage		3.55		V
	Balanced opening pressure difference		25 ± 5 MV		mV
Equalization function	Balanced mode	Dynamic Equalization
	Balance current	65	/	70	mA
	Charging high temperature protection value	64	67	70	℃


	Charging high temperature protection release value	55	58	61	℃
	Charging low temperature protection value	-15	-10	-5	℃
	Charging low temperature protection release value	-3	0	3	℃
	Discharge high temperature protection value	75	80	85	℃
	Discharge high temperature protection release value	65	70	75	℃
	Discharge low temperature protection value	-35	-30	-25	℃
Temperature protection	Discharge low temperature protection release value	-25	-20	-15	℃
Internal resistance	Discharge circuit internal resistance	/	0.24	0.25	mxD
Internal resistance	Working Mode			50	uA
Self-consumption	Sleep Mode			25	uA
Self-consumption	Sleep conditions and delay	/
Operating temperature	Normal operating range	-40		105	℃
Storage temperature	Humidity is less than 90%,	-40		125	℃
Finished product size	LengthWidthHeight	MAX : 65 * 140 * 12mm

Features

1. Overcharge protection function, under CC-CV (constant current constant voltage) 15.2±0.2V charger voltage working, overcharge protection voltage 3.65V-3.75V.

2. Overdischarge protection function, overdischarge protection voltage 1.95V-2.05V.

3. Charging high temperature protection function, high temperature protection value 64-70°C.

4. Discharge high temperature protection function, discharge high temperature protection release value 65-75°C.

5. Short circuit protection function, short circuit current is 1200-1300A.

Application

When the car battery is running low or fails to start, the car starting power supply steps in as a reliable savior. It is meticulously engineered to supply sufficient power with great efficiency, allowing the vehicle to be kick - started promptly. This is especially advantageous for cars that have been parked for extended periods. During long - term parking, the battery gradually loses its charge due to self - discharge processes. Moreover, in cold weather, the battery's performance typically degrades because low temperatures reduce the chemical activity within the battery. In such situations, the starting power supply becomes truly invaluable.

The starting protection board is a crucial component in this setup. It has the ability to endure a peak current that ranges from 400A to 900A for a duration of 0.35 - 2 seconds. This robust design ensures that potential issues such as the board burning out or false protection triggering are effectively avoided. As a result, it guarantees a smooth and trouble - free start for the vehicle. With its non - electrolytic capacitor design, the protection board can function normally within an extremely wide temperature range, spanning from - 40 to 105℃. This makes it highly suitable for car starting in various regions around the world, regardless of whether they have frigid arctic climates or sweltering tropical conditions.

Type

Specification

(1) 4S 12V BMS

Supports 100A/150A Batteries.

Max Starting Current reach 900A

Charging 50A

Power : 1200/1800Wh

Dimension: 165*140*12mm

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