What is the delivery time for small orders?

Delivery time is 7-15 days after payment for small orders. Peak season lead time is one month, and off-season is within 15 workdays.

Is customization available for this BMS?

Yes, we offer full customization from samples or designs, including minor and flexible customization. Contact us with your voltage, cells, or current requirements.

Smart BMS 3s/4s Lithium Battery PCB with Smbus Communication (lws-4s20A-365)

Name: Smart BMS 3s/4s Lithium Battery PCB with Smbus Communication (lws-4s20A-365)
Brand: Shenzhen Li-ion Battery Bodyguard Technology Co., Limited
SKU: 879512855

Guangdong, ChinaShenzhen Li-ion Battery Bodyguard Technology Co., Limited

US$5.59

10-999 Pieces

US$2.64

1,000+ Pieces

Sample price:US$5.59/piece.Request sample

Product profile

Customization

Available

Overcharge Protection

Yes

Ovediscahrge Protection

Yes

Model NO.

LWS-4S20A-365 WITH SMBUS

Over Current Protection

Yes

Balance Function

Yes

Usage

Lithium Battery Packs, LiFePO4 etc

Application

Digital Equipment, Electrice, Ebike, etc

Delivery Time

7-15 Days After Payment for Small Order

Metal Coating

Copper

Mode of Production

SMT

Layers

Multilayer

Base Material

FR-4

Certification

RoHS, ISO

Customized

Condition

New

Transport Package

in: Vacuum Packing/out: Packing: Carton Packing

Specification

85*45*9

Trademark

lws

Origin

Shenzhen, Guangdong

HS Code

8536300000

Production Capacity

10000/Month

Key features

Comprehensive Protection: Protects against over-charge, over-discharge, over-current, short-circuit, and temperature issues.

SMBus Communication: Supports SMBus protocol for reliable data exchange and monitoring in battery packs.

Voltage Balance Function: Automatically balances voltage across cells to ensure stability and extend battery life.

High-End Components: Utilizes high-end ICs and MOSFETs for stable quality and superior working performance.

Flexible Application: Can be used for fewer series batteries by leaving connection pins empty; adaptable design.

Customization Support: ODM/OEM services available; customized capacity, size, and design based on customer needs.

RoHS & ISO Certified: Meets RoHS and ISO certification standards for quality and environmental safety.

Low Power Consumption: Sleep mode current <150uA and software current <400uA for energy efficiency.

Company profile

Self-brandedPatents AwardedYears of Export ExperienceHigh Repeat Buyers Choice

Shenzhen Li-ion Battery Bodyguard Technology Co., Limited

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 12 years CertifiedNearest Port: Shenzhen Port, Hong Kong PortAverage Response Time: ≤7.06h

AI-Powered supplier vetting

SummaryThe supplier presents itself as a Battery BMS manufacturer with documented quality, service, R&D, and production processes. It reports OEM and ODM services, SDK availability, 3D design, broad customization, recent new-product activity, and documented design and verification records. Production-related evidence includes SMT, screen printing, reflow soldering, AOI, coating, drying, packaging, and dedicated testing equipment, with standardized finished-product inspection instructions. It has participated in several offline trade shows and identifies Shenzhen and Hong Kong ports as nearby logistics points. However, the provided information does not establish certifications, named customer cases, or financial performance; it also reports no overseas warehouses, showrooms, agents, or branches.

Supplier typeThe supplier identifies itself as an active Battery BMS manufacturer and reports both OEM services for well-known brands and ODM services. This supports classification as a BMS manufacturer with contract design and manufacturing capabilities.

After-Sales capabilityThe supplier reports clear procedures and followed records for corrective and preventive actions and customer complaint handling. Its technology engineers also provide technical support for production and after-sales service, indicating documented and technically supported after-sales processes.

R&D capabilityR&D engineers handle customer-request confirmation, technical support, and new-product development; design input, output, review, verification, and validation documents are reportedly available for audit. The supplier also reports new products within the past year, ODM capability, and SDK availability, providing explicit evidence of active R&D capability.

Production capacityThe supplier reports multiple manufacturing and testing facilities, including SMT, screen printing, reflow soldering, AOI, coating, drying, packaging, and dedicated power-protection-board testing equipment. It also states that finished-product inspection instructions are available and uniformly followed, while quality assurance and written supplier-service assessment procedures are reported.

Customization capabilityThe supplier provides 3D software design services and reports customization from samples, designs, flexible customization, minor customization, and full customization. These statements directly support broad product and design customization capability.

Product Q&A

Q:How do I determine the material of my battery?

Check the battery body voltage. If normal voltage is 3.2V, it is LiFePO4. If 3.6V or 3.7V, it is Li-ion or Li-polymer. You can also ask the manufacturer.

Q:Can I use this protection circuit board for my battery?

Ensure the number of series cells matches your battery pack. Also, confirm the battery material, as LiFePO4 has different parameters than other types.

Q:Do we need cell balance function?

Yes. Since cells in parallel and series cannot be identical, imbalance leads to inconsistent voltages after charging. Balance function ensures consistency.

Q:What is the Minimum Order Quantity (MOQ)?

There is no MOQ. We accommodate different customer requirements and provide various capacities and sizes. ODM/OEM is welcome.

Q:What are the payment terms?

We accept PayPal, T/T, L/C, and Western Union for payments.