Wholesale Multiple Sizes 12V 4s 7A LiFePO4 Bluetooth Battery Balance BMS Board with Temperature Protection

• Customization: Available
• BMS Type: 12.8V Li-ion/Lithium Ion/LiFePO4 Battery BMS
• Charging Current: 7A
• Model NO.: LWS-4S7A-030
• Discharging Current: 7A
• Type Voltage: 12.8V
• PCM Size: L50*W16*T6mm
• Balance Current: 42mA
• Type Charging Voltage: 14.4V
• Balance Voltage: 4.2V
• Short Circuit Protection Function: Cut Load or Charging Activation
• Over Current Protection: 20+-5A
• Over Charge Protection: 3.90V
• Over Discharge Protection: 2.00V
• Temperature Protection: Yes
• Type: Flexible Circuit Board
• Dielectric: Fr-4
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Origin: China
• HS Code: 8536300000
• Production Capacity: 50000 Pieces /Months
• Package Size: 5.00cm * 2.00cm * 0.50cm
• Package Gross Weight: 0.390kg

Product Description

1. Product Description

About your products,just tell us the relative voltage/ cells/ current A or equipment etc,
We will help to recommend the most suitable products for you. 

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} 

 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.}
  

PCM Specifications  For 12.8V (4S) LiFePO4 Battery Packs
Model:LWS-4S7A-030(4S) with TVS and temperature protection
No.	Test   item		Criterion
1	Voltage	Charging voltage	DC:14.4V  CC/CV
		Balance voltage for single cell	3.6±0.025v
2	Current	Balance current for single cell	36mA
		Current consumption	≤50μA
		Maximal continuous charging current	7A
		Maximal continuous Discharging current	7A
3	Over charge Protection	Over charge detection voltage for single cell	4.25V±0.025V
		Over charge detection delay time	0.5S-1.5S
		Over charge release voltage for single cell	4.15V±0.05V
4	Over discharge protection	Over discharge detection voltage for single cell	2.70V±0.08V
		Over discharge detection delay time	0.5S-1.5S
		Over discharge release voltage for single cell	3.0±0.10V
5	Over current protection	Over current detection voltage	200±25mv
		Over current detection current	20±5A
		Detection delay time	5mS-15mS
		Release condition	External charge activation
6	Short protection	Detection condition	Exterior short circuit
		Detection delay time	200-500us
		Release condition	External charge activation
7	Resistance	Protection  circuitry(MOSFET)	≤50mΩ
8	Temperature	Operating Temperature Range	-40~+85ºC
		Storage Temperature Range	-40~+125ºC

    
 
  2. Company Information

  

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,

5. Customer Feedback


 

Any further questions, Welcome to contact our sales person by sending inquiry .
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