Lws 4s LiFePO4 BMS 12V LiFePO4 BMS Li-ion 4s 10A LFP Battery Pack 3.2V 3s 12V Lto Circuit Board PCB 18650 Lithium BMS Manufacturers
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Product Highlights
- Smart Balance Function: Automatically balances voltage across cells for stable performance and extended battery life.
- Comprehensive Protection: Protects against over-charge, over-discharge, over-current, short-circuit, and temperature extremes.
- OEM/ODM Customization: Offers flexible customization options including design, samples, and minor adjustments to meet specific needs.
- High-Quality Components: Utilizes high-end ICs and MOSFETs for superior stability and reliable working performance.
- Flexible Application: Can be used for fewer series batteries by leaving connection pins empty, adapting to various setups.
- Certified Quality: Holds ISO9001, ISO14001, CE, and RoHS certifications ensuring compliance with international standards.
- No Minimum Order Quantity: Accepts orders of any size with no MOQ, catering to diverse customer requirements.
- Fast Delivery: Offers quick turnaround with lead times as short as 15 workdays during off-peak seasons.
Product Attributes
- Customization
- Available
- Max Workign Current
- 10A
- Type Charging Voltage
- 14.4V
- Model NO.
- LWS-4S10A-438
- Over Charge Protection
- 3.65V+-0.025V
- Ove Discahrge Protection
- 2.32V+-0.08V
- Over Current Protection
- 30+-10A
- Temperature Protection
- 75 Degrees
- Short Circuit Protection
- Yes
- Short Circuit Protection Function
- Cut Load or Charging Activation
- Application
- Solor, Digital Equipment, Electrice, Ebike, etc
- Metal Coating
- Copper
- Mode of Production
- SMT
- Layers
- Multilayer
- Base Material
- Fr-4
- Certification
- RoHS, ISO
- Customized
- Customized
- Transport Package
- Anti-Static Bag Packaging/ Carton Packaging
- Specification
- 60*30*4mm
- Trademark
- LWS
- Origin
- Shenzhen, China
- HS Code
- 8536300000
- Production Capacity
- 10000/Month
- Package Size
- 7.00cm * 5.00cm * 5.00cm
- Package Gross Weight
- 0.500kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Lws 4s LiFePO4 BMS 12V LiFePO4 BMS Li-ion 4s 10A LFP Battery Pack 3.2V 3s 12V Lto Circuit Board PCB 18650 Lithium BMS Manufacturers
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Product Description

Product Advantages
1.True lithum battery pack BMS factory
2.Supply OEM/ODM and custom service
3.High quality with smart balance function
4.Wholesale price
5.Environment
5.ISO9001/ISO14001/CE/ROHS certificates
6.Fast delivery
About the battery BMS
LWS 4s Lifepo4 BMS 12V Lifepo4 BMS Li-ion 4S 10A LFP Battery Pack 3.2V 3S 12V LTO Circuit Board pcb 18650 Lithium BMS
Function: Detect and protect the battery from over-charge ,over-dicharge, over-current short-circuit ,temperature detecting protection and auotmatically voltage balance function .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.
About your products,just tell us the relative voltage/ cells/ current A or equipment etc,we will help to recomment the most suitable products for you. or we design for you!
Product specification
| PCM Specifications For 12.8v (4S) LiFePo4 Battery Packs | ||||
| LWS-4S10A-438(4S) | ||||
| No. | Test item | Criterion | ||
| 1 | Voltage | Charging voltage | DC:14.4V CC/CV | |
| Balance voltage for single cell | 3.6V±0.025V | |||
| 2 | Current | Balance current for single cell | 36mA±5mA | |
| Current consumption | ≤50μA | |||
| Maxi mal continuous charging current | 10A | |||
| Maxi mal continuous Discharging current | 10A | |||
| 3 | Over charge Protection | Over charge detection voltage for single cell | 3.65±0.025V | |
| Over charge detection delay time | 500S-1500mS | |||
| Over charge release voltage for single cell | 3.48±0.05V | |||
| 4 | Over discharge protection | Over discharge detection voltage for single cell | 2.32±0.08V | |
| Over discharge detection delay time | 500-1500mS | |||
| Over discharge release voltage for single cell | 2.58±0.1V | |||
| 5 | Over current protection | Over current detection voltage | 0.1±0.025v | |
| Over current detection current | 30+-10A | |||
| Detection delay time | 50-200mS | |||
| Release condition | Cut load or Charging Activation | |||
| 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~+65ºC | |
| Storage Temperature Range | -40~+125ºC | |||
Other products :




Packing and shipping
Factory
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.
What material is your battery?
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
consistent , which will lead to each cell voltage is not consistent as well after the completion of the charging if
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.
Q: What is your term of payment?
A: PayPal, T/T, L/C,Western Union
More question can contact :
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!
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR252760". Items marked "" are certified.
Company Profile
Shenzhen Li-ion Battery Bodyguard Technology Co., Ltd found in 2013, is professional development, design & manufacture all kinds of shape, size PCM & BMS for Li-polymer/Li-ion/LiFePO4/Lithium Titanate battery pack.
Also provide battery pack assembly services and charger supply.
With 5 years experience and rapid growth, we have become the leading developer and supplier of battery management system (BMS), lithium-ion battery module solutions, and has accessed to the supply chain system of well-known domestic and foreign manufacturers, with our Professional R & D team, rich production experience, advanced production technology, excellent management system (ISO9001), providing our customers with high quality, safe, convenient and clean green products.
Since established, we have successfully designed and produced more than 400 types of professional hardware PCM/BMS for battery pack, and software BMS including SMBUS, RS485, RS232 & Bluetooth.
These high quality PCM matched with the battery pack are widely used in the digital products, wheel chair, E-bike, RC toys (helicopter, boats), medical instruments, lighting devices, EV application. etc, products are well recognized and well regarded by customers in Europe, USA, Middle East, Africa, South East Asia countries and as well as Chinese domestic market.
At factory you would talk with Sales Managers, Technical Engineers, Quality Managers and Production Supervisors, to more know the Battery BMS production, inspect & testing process.
We always provide professional technical team, best service attitude, good quality & reliable products, and competitive and reasonable price, to meet customer needs, and provide OEM/ODM services.
We're pleased to get your Inquiry and we will come back to as soon as possible. We stick to the principle of "quality first, service first, continuous improvement and innovation to meet the customers" for the management and "zero defect, zero complaints" as the quality objective. To perfect our service, we provide the products with good quality at the reasonable price.
As a Active and reliable Battery BMS Manufacturer, We are willing to try our best to support you.
Meet us, Meet reliablility, Meet our mutual development!
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- 2nd Floor, No. 9, Shiao Second Industrial Area, Dalang Street, Longhua District, Shenzhen 518109, Guangdong, China
-
Plant Area
- 3000 square meters
-
Number of Employees
- 37
-
Registered Capital
- 3,000,000 RMB
-
Terms of Payment
- T/T, PayPal
-
International Commercial Terms(Incoterms)
- CIF, CFR, EXW, FOB
-
Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shenzhen Port, Hong Kong Port
-
Minimum Order Quantity
- 6 PCS
-
Supply Chain Partners
- 20
Our Production Capability & Technical Expertise
-
Main Products
- Battery Management System, BMS, High Voltage Battery Management System, Lithium Battery Pack, UAV Battery Pack, LiFePO4 Battery Pack
-
Production Lines
- 2
-
Production Machines
- SMT Facility, Screen Printing Facility, Reflow Soldering Facility, AOI Facility, Automatic Oil Coating Facility, Drying Facility, Heat Shrink Packaging Facility, Power Protection Board Specific Test Equipment
-
QA/QC inspectors
- 2 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Flexible customization, Minor Customization, Full Customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 2 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2013-03-18
-
Export Year
- 12 years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, Africa, East Asia(Japan/ South Korea), Australia
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 7
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- How do I judge what material my battery is?
- 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.
- Can I use this protection circuit board for my battery?
- 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. What material is your battery? 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.
- Do we need cell balance or not?
- 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 consistent , which will lead to each cell voltage is not consistent as well after the completion of the charging if without balance function
- Do you have Minimum Order Requirement (MOQ)?
- 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.
- What is your term of payment?
- PayPal, T/T, L/C,Western Union
Send your message to this supplier
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