1s 3.7V 18650 Battery Management System BMS with Smbus

• Customization: Available
• Series: 1s
• BMS Type: 1s Li-ion Battery Pack PCB
• Model NO.: LWS-1S3A-221
• Charging Current: 3A
• Discharging Current: 3A
• Type Voltage: 3.7V
• Balance Current: /
• Type Charging Voltage: 4.2V
• Balance Voltage: /
• Short Circuit Protection Function: Cut Load or Charging Activation
• Over Current Protection: 6A +-2A
• Over Charge Protection: 4.25+-0.025V
• Over Discharge Protection: 2.50+-0.005V
• Hdq Communication Protocol: Bq27000
• Metal Coating: Copper
• Mode of Production: SMT
• Layers: Single-Layer
• Base Material: FR-4
• Certification: RoHS, ISO
• Customized: Customized
• Condition: New
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Specification: L40*W20*T2.0mm
• Origin: China
• HS Code: 8536300000
• Production Capacity: 50000 Pieces /Months

Product Description

1. Product Description
 

We can customize any BMS from 1S to 35S lithium batteries with current 10A to 350A.


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 3.7V(1S)Li-ion Battery Packs
Model:  LWS-1S3A-221(1S)
No.	Test   item		Criterion
1	Voltage	Charging voltage	DC4.2V
		Balance voltage for single cell	/
2	Current	Balance current for single cell	/
		Current consumption	≤10μA
		Maximal continuous charging current	3A
		Maximal continuous Discharging current	3A
3	Over charge Protection	Over charge detection voltage for single cell	4.25±0.025V
		Over charge detection delay time	0.96S-1.4S
		Over charge release voltage for single cell	4.15±0.05V
4	Over discharge protection	Over discharge detection voltage for single cell	2.5±0.05V
		Over discharge detection delay time	115-173mS
		Over discharge release voltage for single cell	3.0±0.1V
5	Over current protection	Over current detection voltage	0.2±0.015V
		Over current detection current	1.8±0.5A
		Detection delay time	7.2ms-11ms
		Release condition	Cut load
6	Short protection	Detection condition	Exterior short circuit
		Detection delay time	200-500us
		Release condition	Cut load
7	Resistance	Protection  circuitry(MOSFET)	≤60mΩ
8	Temperature	Operating Temperature Range	-40~+80ºC
		Storage Temperature Range	-55~+125ºC
9	Communications	BQ27000	HDQ  Communication protocol

 
Wiring diagram photos:

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

  

3. Packaging & Shipping & Payment 
 

Inner packing:   Vaccum packing/Plastic bag. 

Outer packing:  Standard carton packing or packing per customer's requirements.

Delivery type:    by air such as TNT,UPS,FEDEX or by sea ,just depend on your convenient.

Payment:   L/C,T/T, ,PAYPAL etc.

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!