Protection Circuit Board 2s 2A 6.4V/ 7.4V LiFePO4 BMS for 7.4V Battery Pack

• BMS Type: 1s Li-ion/Lithium Ion Battery BMS
• Charging Current: 2A
• Discharging Current: 2A
• Type Voltage: 7.4V
• Type Charging Voltage: 8.4V
• Short Circuit Protection Function: Cut Load or Charging Activation
• Model NO.: LWS-2S2A-439
• Over Current Protection: 5A +1A
• Over Charge Protection: 4.25+-0.025V
• Over Discharge Protection: 2.80+-0.005V
• Type: 2s 7.4V BMS
• Connection Mode: Series Connection
• Rechargeable: Chargeable
• Discharge Rate: 2A
• Size: Small
• Accessories Type: Battery Management System
• Rated Capacity: >1000MAH
• Standard Voltage: 7.4V
• Usage: Protect Cell
• Electrolyte: Li-ion
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Specification: L13*W13*T2.5mm
• Origin: China
• HS Code: 8536300000
• Production Capacity: 50000 Pieces /Months

Product Description

1. Product Description
 

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

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 7.4V (2S) Li-ion Battery Packs
Model: LWS-2S2A-439(2S)
No.	Test   item		Criterion
1	Voltage	Charging voltage	DC8.4V    CC/CV
		Balance voltage for single cell	/
2	Current	Balance current for single cell	/
		Current consumption	≤10μA
		Maximal continuous charging current	2A
		Maximal continuous Discharging current	2A
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	4.05±0.05V
4	Over discharge protection	Over discharge detection voltage for single cell	2.8±0.08V
		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	0.20±0.030V
		Over current detection current	5±1A
		Detection delay time	5ms-15ms
		Release condition	Cut load or  Charging activation
6	Short protection	Detection condition	Exterior short circuit
		Detection delay time	200-500us
		Release condition	Cut load or  Charging activation
7	Resistance	Protection  circuitry(MOSFET)	≤60mΩ
8	Temperature	Operating Temperature Range	-40~+85ºC
		Storage Temperature Range	-40~+125ºC

 

    2. Company Information
 

 

  

3. Packaging & Shipping & Payment 

Packing: 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,Western Union,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!