Smart BMS 2s 7.4V Battery PCB PCM BMS with Smbus

• Charging Current: 5A
• Discharging Current: 5A
• Type Voltage: 7.4V
• Balance Current: 42mA/36mA
• Type Charging Voltage: 8.4V
• Short Circuit Protection Function: Cut Load or Charging Activation
• Model NO.: LWS-2S2A-067
• Over Current Protection: 8.5A +-2A
• Over Charge Protection: 4.25V+-0.025V
• Over Discharge Protection: 2.50+-0.005V
• Communication: Smbus
• Metal Coating: Copper
• Mode of Production: SMT
• Layers: Single-Layer
• Base Material: FR-4
• Certification: RoHS, ISO
• Customized: Customized
• Condition: Used
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Specification: L30*W32*T2.3mm
• Origin: China
• HS Code: 8536300000
• Production Capacity: 50000 Pieces /Months

Product Description

1. Product Description

Product Advantages:

• ^{Supply OEM/ODM and custom service}
• ^{High quality with smart balance function}
• ^{Wholesale price}
• ^{ISO9001/ISO14001/CE/ROHS certificates}
• Fast delivery
• ^{Green product}
• ^{One year warranty}
• ^{Excellent safety performance}
•  ^{Short circuit testing passed}
• ^{Overcharge testing passed}
• ^{Over discharge testing passed}
• ^{Original imported :IC from Japan,MOS from USA,Components from Sumsang.}
•  ^{1.2m drop testing passed}
• ^{100% testing} 
• ^{Support ODM & OEM services} 

 

Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD
PCM Specifications  For 14.8V(3S)Li-ion Battery Packs
Mode: LWS-2S2A-367(2S)
No.	25ºC              Test project at 25 ° C environment		Standard
1	Communication Protocol	SMBUSE SMBUSE  Communication	C=SCL/D=SDA
1	Voltage	Charging voltage	DC:8.4V CC/CV(4.45V/1Cell)
2	Capacity	Battery pack design capacity	4200mAh
		Battery pack Maximum capacity	4200mAHh
3	Current	Current consumption (software)	<300uA
		Current consumption (sleep mode)	<100uA
		Maximum continuous charging current	1400mA
		Maximum continuous discharging current	1400mA
4	Over current protection (Primary protection)	Over charge detection current	1500mA
		Detection delay time	2s
		Over discharge detection current	1500mA
		Detection delay time	2s
5	Over current protection (Secondary protection)	Over charge detection current	4.5±0.025V
		Detection delay time	1S
		Over discharge detection current	4.3±0.05V
		Detection delay time	2s
	Over current protection (Tertiary protection)	Overdischarge detection current	2.8±0.1V
		Detection delay time	1s
		Recovery current	3.0±0.05V
6	Over charging protection  (single cell)	Over charge detection voltage	13.5V
		Over charge detection delay time	1s
		Overcharge recovery voltage	12.9V
		Over charge detection recovery delay time	8.4V
7	Over discharge protection ( Single cell)	Over discharge detection voltage	2s
		Over discharge detection delay time	9V
		Over discharge recovery voltage	1s
11	Short circuit protection	Detection condition	P+,P-
		Detection delay time	200-500us
		Recovery status	Cut load
12	Resistance	Protection  circuitry(MOSFET)	≤20mΩ
13	, Over temperature protection (Primary protection)	Charging	55ºC±5ºC
		Charging delay time	2s
		Over temperature charging recovery	50ºC±5ºC
		Discharging	60ºC±5ºC
		Discharging delay time	2s
		Discharging delay recovery temperature	50ºC±5ºC
15	Temperature	Operating Temperature Range	-20~+85ºC
		Storage Temperature Range	-20~+125ºC

   

About the battery BMS/PCB/PCM

Function^{_: Detect and protect the battery from over-charge  ,over-dicharge, over-current short-circuit ,temperature detecting protection and auotmatically voltage balance function .}

^{Build with high end electronic components (High End IC and MOSFET ) ,simple structure design will let it have more stable quality working performance , Flexible application
( it can be used for less series battery by leaving some connection pins at empty status ),full set of protection measures let it works well without any infulence from external unexpected accidents.}

2. Company Information
 

We professionally manufacture lithium polymer battery and pcb for more than 10 years in China.

We have cooperated with HP,Emerson tool,NIke,WD.

Our company is established in 2013.

Product Certificates CE ROHS.

Quality control system certificates:ISO9001,ISO14001

1. Complete products contract PCB assembly and manufacturing services

2. Circuir boards 2 to 30 layers PCB layout,fabrication, PCB assembly and box build

3. Active and passive components source is directly from original manufacturer

4. Enclosure cabinet case plastic injection molding,mental stamping,manufacture and assembly

5. High-precision 0201 size components SMT technology and lead-free

6 .IC pre-program

7. Hight-precision E-Tasting

 

 

  

3. Packaging & Shipping & Payment 

4. FAQ

Q:  How many Ampere protection circuit boards should choose?

A: It depends on your load power such as electric motor power please contact the sales or technical support before buying.

Q:  What is the distinction between same port wiring and different port wiring?

A: The cathode of charger and load is different for different port wiring , the cathode of charger and load is same for same port wiring and the charging current is equal to the discharge current. 

Q:  What is the distinction between balance and unbalance function?

A: Equilibrium function is that high voltage cells will be discharged with resistor, waiting for the low voltage cells , to achieve the each cell voltage is consistent , to improve the battery performance for the whole group.

Q: Do you have Minimum Order Requirement (MOQ)?

A: No, We don't have MOQ, Different customer have different requirement ,We can provide various capacity and size is per your requirements,Also ODM / OEM is welcome.

Q:  What is your term of payment?

A: PayPal, T/T, L/C,

 

Any further questions, Welcome to contact our sales person by sending inquiry .
Your satisfaction is our pleasure.  Let's Join hands for mutual Benefits!