Smart BMS 4s LiFePO4 Protection Circuit Module for LiFePO4 Battery Pack

• Shipping Cost: Estimated freight per unit.: To be negotiated
• Nominal Voltage: 12V
• Material: Plastic
• Peak Discharge Current: 60A100A100A180A
• Trade Guarantee: From payment to delivery, we guarantee your trading security without charges.
• Model NO.: 4S Balancer
• Working Current: 25A 35A45A 60A
• Transport Package: Carton Box
• Specification: 4S Battery BMS
• Trademark: EVL
• Origin: Shandong
• Production Capacity: 1000000 Pieces/Year
• Package size per unit product: 25.00cm * 12.00cm * 30.00cm
• Gross weight per unit product: 1.250kg

Product Description

Product Description

Li-ion bms 4s

1.Use top quality (A-level) protective integrated circuit IC, from the solution of Seiko of Japan.
2.Strong load ability, constant discharge current 10A/15A/20/30A/40A/50A/60A , use high voltage resistance, low inner resistance power Mosfet.
   The heat sink will greatly help cooling.
3.IC itself has power balancing function. The circuit is simple and reliable.
4.Typical voltage detection for each cell. So each battery will be prevented over charged or over discharged. Over current and short circuit
   the protection function is very reliable.Long time short circuit of the load won't affect the PCB and the battery.Temperature protection during charging
    and discharging.
5.Extreme low power consumption. The consumption of the whole device is less than 50uA.
 

Detailed Photos

 

Product Parameters

 

Parameters for li-ion 4S 12V BMS
	Description	Specification				Unite	Remarks
		20A	30A	40A	60A
Discharge	Continue discharge current	20	30	40	60	A
	Discharge Peak current	65	165	165	200	A
	Over current protection	65	165	165	200	A
Charge	Charge voltage	17				V
	Charge current	20	30	40	60	A	Charge current 8A in Separate port
Overcharge protection	Overcharge detect voltage	4.25±0.025				V
	Overcharge protection delay	0.5				S
	Overcharge release voltage	4.15±0.05				V
Balance	Balance detection voltage	4.18				V
	Balance release voltage	4.18				V
	Balance current	30				mA	Balance current30±5mA
Discharge protection	Over-discharge detect voltage	2.7±0.05				V
	Over-discharge detect delay	0.5				S
	Over-discharge release voltage	3.0±0.05				V
Overcurrent protection	Overcurrent detect voltage	150				mV
	Overcurrent detection delay	9				MS
	Over-current protection release conditions	Offload
Short circuit protection	Short circuit protection conditions	Short circuit with external load
	Short circuit detection delay	250				uS
	Short circuit protection release conditions	Offload
Temper Protection	Temper Protection	NA				ºC	As Requirement
Inner resistance	Main circuit conductive inner resistance	≤10				mΩ
Self-electricity consume	Working current	≤40				uA
	Sleeping current(Battery in over-discharge)	≤20				uA
Working Temp	Temp range	-30to80				ºC

 

Certifications

Packaging & Shipping

Company Profile

EVL Battery Limited is a leading NCM Lithium Battery manufacturer from China and its public company in the Hongkong Stock Exchange market. There are 4 factories in Fujian and Guangdong. 
The production capacity of 4 factories is as much as 20 GWh per year. EVL Battery Limited is the number one Lithium Battery manufacturer from China.                               

Our Services & Strength                                                                                                                      

We provide high-quality EVL Battery to clients all over the world and help clients deliver battery from China to them by sea and by air at a reasonable price. and we provide necessary technical support and warranty to you!                      





 

FAQ

Q: What is the life expectancy of a Lithium battery?
A: The typical estimated life of the Lithium Iron Phosphate (LiFePO4) battery is 5-15 years or 2000 to 8000 charge cycles. One charge cycle is a period of use from fully charged, to fully discharged, and fully recharged again.

Q: If I want to charge LiFePO4/Lithium Ion battery, which already has PCB, would a normal SLA controller work fine?
A: For LiFePO4 / Lithium-Ion battery, we always recommend using LiFePO4/Lithium-Ion solar controller. Especially if you are using the battery as UPS (back up power supply). The Lead-Acid solar controller will constantly provide pulse current to the battery. In the long run, it might damage the PCB. So the PCB won't be able to protect the battery when it should be.

Q:I am a distributor. Can I cooperate with battery warehouse for a long time?
A: Yes, Individual pricing for large scale projects and wholesale demand is available

Q: Why hasn't my ups or FedEx transportation number been updated?
A: This is normal, in countries with tariffs, our packages need to pass the customs of your country before they can be delivered to the local UPS or FedEx. Once they pass the customs and update the transportation number, you can usually receive the goods within 3-5 days.

Q: Are the cells I bought balanced? 
A:we know the importance of maintaining the consistency of each cell in the battery pack, so we will match and balance all cells to ensure that the internal resistance, voltage, and capacity of cells are completely matched and balanced before delivery. This process is very necessary.