4S 20A pcba manufacture laptop roger led lights print led circuit 14.8V active balancer bms lifepo4 power bank module board pcb

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

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.
Supply OEM/ODM and custom service
* High quality with smart balance function
* Wholesale price
* ISO9001/ISO14001/CE/ROHS certificates
* Fast delivery
About the battery BMS/PCB/PCM
Function: Detect and protect the battery from over-charge ,over-dicharge, over-current short-circuit ,temperature detecting protection andauotmatically 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.

*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.

1.after sales services
2.OEM,ODM,Customized Design
3.We can provide 24 hours service for you. We pride ourselves on our ability to custom tailor programs around our customers'needs.
We take time to listen to your unique business needs and then set out to surpass them .
Payment Term:L/C,T/T,Paypal
Can provide variouse capacity and size is per your requirements.

Packaging & Shipping
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.

1. who are we?
We are based in Guangdong, China, start from 2013,sell to Domestic Market(50.00%),Southeast Asia(8.00%),Eastern Europe(5.00%),Mid East(5.00%),Western Europe(5.00%),Northern Europe(5.00%),Southern Europe(5.00%),North America(3.00%),South America(3.00%),Oceania(3.00%),Eastern Asia(3.00%),Central America(2.00%),South Asia(2.00%),Africa(00.00%). There are total about 11-50 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Battery Pack BMS,Lifepo4/Lithium Ion PCM,Protection Circuit Board,Print Circuit Board,Lifepo4/Lithium Ion Battery Pack

4. why should you buy from us not from other suppliers?
The company has advanced production equipment and comfortable office environment, employees hundreds of people. The company Has a complete, scientific quality management system, and the importance of quality and environmental philosophy

5. what services can we provide?
Accepted Delivery Terms: FOB,EXW；
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T,L/C,PayPal,Western Union,Cash;
Language Spoken:English,Chinese

Products 12.8v 4s li ion bms pcm 30a Model LWS-4S20A-005(4S)No. Test item DetailsCriterion1VoltageCharging voltageDC:12.6V CC/CV
Balance voltage for single cell 2CurrentBalance current for single cell≤20μACurrent consumptionMaximal continuous charging current
4AMaximal continuous Discharging current4A3Over charge ProtectionOver charge detection voltage for single cell4.30V±0.025VOver
charge detection delay time0.5S—2SOver charge release voltage for single cell4.10±0.05V4Over discharge protectionOver discharge
detection voltage for single cell 2.40V±0.05VOver discharge detection delay time50mS—150mSOver discharge release voltage for
single cell3.0±0.1V5Over current protectionOver current detection voltage200±15mvOver current detection current4.5±0.5ADetection
delay time5mS—15mSRelease conditionCut load6 Short protectionDetection conditionExterior short circuitDetection delay time
200-500usRelease conditionCut loadResistanceProtection circuitry(MOSFET)≤50mΩ7TemperatureOperating Temperature Range-40~+85℃
Storage Temperature Range-40~+125℃