3s4a 11.1V Round PCM Power Bank PCB Active Balancer Smart BMS

• Product Name: PCM
• Usage: Lithium Battery Packs, LiFePO4 etc
• Series: 3s
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: LWS-3S4A-421(3S)
• Working Current: 4A
• Metal Coating: Copper
• Mode of Production: SMT
• Layers: Double-Layer
• Base Material: Fr-4
• Certification: RoHS, ISO
• Customized: Customized
• Condition: Used
• Testing Service: 100%E-Testing
• Transport Package: Electrostatic Bag and Carton
• Specification: L17.5*W17.5*T4mm
• Trademark: LWS
• Origin: China
• HS Code: 8536300000
• Package Size: 3.00cm * 3.00cm * 2.00cm
• Package Gross Weight: 0.500kg

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.

If you feel that this product does not meet your requirements, you can consult our staff, you can recommend or customize the lithium battery protection board you want.

• Description of application effect 

    (Battery Management System) BMS can extend battery life and make battery work safely.

 

   This model can be used for solar, LED lights, Emergency lights, Digital Equipment, etc.electric scooter,e-bike,tourisr

sightseeing vehicle,electric tricycle,low speed ev,emergrncy ups,solar street light,RV&home energy storage......

Mode	LWS-3S4A-421(3S)
PCM Size	L17.6*W17.3*T2.5 mm
battery series	2S-3S Available
working current	4A Available
Application	LED lights, Emergency lights, Digital Equipment, etc
Sample	available

Electric Switch, Temperature Switch, Balance, 5V output, NTC and etc, if you need any above accessories, please must to contact our sales fisrt. All items are customized as your requirements, if without any request after order placed, we will produce as original.

 

Wiring:
1. First connect the B- of the BMS to the total negative pole of the battery pack;
2.The cable starts from the thin black one connecting B-, the second red wire connects the positive pole of the first string of batteries, and the next string is connected in turn to positive pole of the battery,B-,B1,B2.....B5; then insert the cable into the BMS; (The maximum number of strings is 2-3 strings, the example picture is 3 strings) (Please weld the wires in order and avoid pseudo solder joints.)
3. Connect Charger C-/Load P- with BMS C-/P- (Use larger size wires)  
4. Connect Positive Pole: Charger C+/Load P+ with Battery Pack B+ (Use larger size wires) .

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.

Title goes here.

*Complete products contract PCB assembly and manufacturing services
*Circuir boards 2 to 30 layers PCB layout,fabrication, PCB assembly and box build
*Active and passive components source is directly from original manufacturer
*Enclosure cabinet case plastic injection molding,mental stamping,manufacture and assembly
*High-precision 0201 size components SMT technology and lead-free
*IC pre-program
*Hight-precision E-Testing
ShenZhen LWSPCM Co;ltd -We are specialzed manufacturer in the lithium battery pack pcb/pcm/bms. The usage ranges cover lithium battery pack (lithium metal batteries),power li-ion batteries(LiCoO2,LINiCoMnO2,LiMnO4 ,LiFePO4) Applications for: mobile phone batteries,Laptop,Tablet PC,power tool,e-bike,electric buses,golf cart power bank etc,involved in digital products,electric vehicle,energy storing device,medical equipment and mobile illumination) and so on. Of which,the LiFePO4 battery balanced protection board is our core products.

PCM Specifications  For 11.1V(3S) Li-ion Battery Packs
Model:LWS-3S4A-421(3S)
No.	Test   item		Criterion
1	Voltage	Charging voltage	DC:12.6V  CC/CV
		Balance voltage for single cell
2	Current	Balance current for single cell
		Current consumption	≤50μA
		Max continuous charging current	4A
		Max continuous Discharging current	4A
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	10mS-200mS
		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	10±2A
		Detection delay time	5mS-15mS
		Release condition	Cut load,Automatic recovery
6	Short protection	Detection condition	Exterior short circuit
		Detection delay time	200-500us
		Release condition	Cut load,Automatic recovery
7	Resistance	Protection  circuitry(MOSFET)	≤100mΩ
8	Temperature	Operating Temperature Range	-40~+65ºC
		Storage Temperature Range	-40~+125ºC

3.FAQ
Q: How do I judge what material my battery is ?
A: Please take a look at the battery body.if the normal voltage of your battery shows as 3.2V,the battery will be LiFePo4.If the normal voltage of your battery shows as 3.6V or 3.7V, the battery will be Li-ion or Li-polymer battery. you can also ask battery manufacturer the material of battery.

Q: Can I use this protection circuit board for my battery?
A: Can use this protection circuit board, or not?
There are 2 questions:
How much cells in series is your battery pack?
The protection circuit board you need to buy must be same cells in series as your battery pack.

Q: What material is your battery?
A:Only the LiFePo4 battery has different electric parameter from other battery, so if you need buy the protection circuit board for LiFePo4 battery , Please let us know firstly.

Q: Do we need cell balance or not?
A: The function of balance : Since battery is made of many pcs of cells in parallel and in series, the cells can't be the same as no two people in the world is the same , so can only put in group with similar performance is not without balance function

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 as per your requirements,Also ODM / OEM is welcome.

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.

Web: http://lws-pcm.en.made-in-china.com

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