Can you customize the BMS?

Yes, we provide full customization options including samples, designs, and flexible adjustments for voltage, current, and size.

What is the lead time for production?

Peak season lead time is one month, while off-season lead time is within 15 working days.

Lws 4s 20A 30A Short-Circuit Protection Battery Management System 4s BMS

Name: Lws 4s 20A 30A Short-Circuit Protection Battery Management System 4s BMS
Brand: Shenzhen Li-ion Battery Bodyguard Technology Co., Limited
SKU: 1972116281

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

US$8.90-11.00

2 Pieces

Product profile

Customization

Available

Max Workign Current

≤50A

Type Charging Voltage

16.8V

Model NO.

LWS-4S30A-1055(4S20A)

Over Charge Protection

4.2±0.025V

Ove Discahrge Protection

2.7V+-0.05V

Over Current Protection

30±5A

Short Circuit Protection Function

Cut Load

Application

Digital Equipment, Electrice, Ebike, etc

Metal Coating

Copper

Mode of Production

SMT

Layers

Multilayer

Base Material

Fr-4

Certification

RoHS, ISO,CE

Customized

Transport Package

Anti-Static Bag Packaging/ Carton Packaging

Specification

L62.9*W62.9*T7.3mm

Trademark

LWS

Origin

Shenzhen, China

HS Code

8536300000

Production Capacity

10000/Month

Key features

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

Smart Cell Balancing: Automatically balances voltage between cells with adjustable current via external components.

Bluetooth Connectivity: Supports Bluetooth protocol for real-time monitoring and data communication.

High Stability Design: Uses high-end ICs and MOSFETs for stable quality and reliable performance.

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

Customization Support: ODM and OEM services available; customized voltage, cells, and current options.

Certified Quality: Products are RoHS, ISO, and CE certified with 100% finished product inspection.

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: ≤6.03h

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.