PCB 18650 4s Battery BMS Lithium/LiFePO4 BMS Smarter PCM for Electric Scooter

• Customization: Available
• BMS Type: Li-ion/Lithium Ion Battery BMS
• Charging Voltage: 16.8V
• Model NO.: LWS-4S7A-070
• Balance Voltage: /
• Charging Current: 7A
• Over Charge Protection: 4.35V
• Over Discharge Protection: 2.40V
• Over Current Protection: 15+-3A
• Type: Flexible Circuit Board
• Dielectric: Fr-4
• Material: Fiberglass Epoxy Resin + Polyimide Resin
• Application: Consumer Electronics
• Processing Technology: Delay Pressure Foil
• Base Material: Copper
• Insulation Materials: Epoxy Resin
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Origin: China
• HS Code: 8536300000
• Production Capacity: 50000 Pieces /Months

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.}

Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD
PCM Specifications For 14.8V(4S)Li-ion Battery Packs
Model:LWS-4S7A-070
No.	Test item		Criterion
1	Voltage	Charging voltage	DC:16.8V  CC/CV
		Balance voltage for single cell
2	Current	Balance current for single cell
		Current consumption	≤50μA
		Maximal continuous charging current	7A
		Maximal continuous Discharging current	7A
3	Over charge Protection	Over charge detection voltage for single cell	4.35V±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	2.40V±0.08V
		Over discharge detection delay time	50mS-150mS
		Over discharge release voltage for single cell	3.00±0.10V
5	Over current protection	Over current detection voltage	150±25mv
		Over current detection current	15±3A
		Detection delay time	5mS-15mS
		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)	≤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. Contact us

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