What is the maximum continuous charging and discharging current?

The maximum continuous charging and discharging current is 50A.

What is the operating temperature range?

The operating temperature range is -40 to +85 degrees Celsius.

Li-ion Battery Pack

Name: Smart Balance Board 20s50A PCM/BMS with Sample for 18650 LiFePO4/Li-ion Battery Pack
Brand: Shenzhen Li-ion Battery Bodyguard Technology Co., Limited
SKU: 910642175

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

US$23.20

1-99 Pieces

US$19.00

100-998 Pieces

US$16.50

999+ Pieces

Sample price:US$24.00/piece.Request sample

Product profile

Customization

Available

BMS Type

Li-ion/Lithium Ion Battery BMS

Charging Voltage

43.2V

Model NO.

LWS-20S50A-375(12S)

Balance Voltage

3.75V

Charging Current

50A

Over Charge Protection

4.25V

Over Discharge Protection

2.2V

Over Current Protection

150+-30A

Type

Flexible Circuit Board

Dielectric

Fr-4

Material

Fiberglass Epoxy Resin + Polyimide Resin

Application

Consumer Electronics

Processing Technology

Delay Pressure Foil

Base Material

Copper

Insulation Materials

Epoxy Resin

Transport Package

Anti-Static Bag Packaging/ Carton Packaging

Origin

China

HS Code

8536300000

Production Capacity

50000 Pieces /Months

Key features

Smart Balance Function: Automatically balances cell voltage to improve overall battery performance and consistency.

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

OEM/ODM Customization: Flexible customization available based on customer samples, designs, or specific requirements.

High-Quality Components: Built with imported ICs from Japan, MOS from USA, and components from Samsung for stability.

Rigorous Testing: 100% tested including 1.2m drop test, short circuit, overcharge, and over-discharge tests.

ISO & Safety Certifications: Certified with ISO9001, ISO14001, CE, and ROHS for quality and environmental safety.

One Year Warranty: Comprehensive one-year warranty coverage for peace of mind and product reliability.

Fast Delivery: Quick turnaround with peak season lead time of one month and off-season within 15 workdays.

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: ≤6.27h

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 many Ampere protection circuit boards should I choose?

It depends on your load power, such as electric motor power. Please contact sales or technical support before buying.

Q:What is the distinction between same port wiring and different port wiring?

In different port wiring, the cathode of the charger and load are different. In same port wiring, they are the same, and charging current equals discharge current.

Q:What is the distinction between balance and unbalance function?

The equilibrium function discharges high voltage cells via resistors to match low voltage cells, ensuring consistent voltage and improved performance.

Q:Do you have a Minimum Order Requirement (MOQ)?

No, we do not have an MOQ. We provide various capacities and sizes per requirements, and ODM/OEM is welcome.

Q:What are your terms of payment?

We accept PayPal, T/T, and L/C as payment terms.