What are the key components used in the BMS?

Original imported ICs from Japan, MOSFETs from USA, and components from Samsung are used to ensure high quality and stability.

What certifications does the product have?

The product holds ISO9001, ISO14001, CE, and RoHS certificates.

Is customization available for this BMS?

Yes, we can customize any BMS from 1S to 35S lithium batteries with current 1A to 350A, supporting OEM and ODM services.

3s 11.1V 20A Li-ion BMS Specifications for Li-ion Battery Packs

Name: 3s 11.1V 20A Li-ion BMS Specifications for Li-ion Battery Packs
Brand: Shenzhen Li-ion Battery Bodyguard Technology Co., Limited
SKU: 885518835

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

US$5.60

1-999 Pieces

US$4.20

1,000-9,999 Pieces

US$2.60

10,000+ Pieces

Sample price:US$15.00/piece.Request sample

Product profile

Customization

Available

Charge Current

20A

Discharge Current

20A

Model NO.

LWS-4S20A-408

Over Charge Protection Voltage

3.75V /4.25V

Over Discharge Protection Voltage

2.2V/2.75V

Rated Voltage

11.1V /12.6V

Over Current Protection

40-60A

Short Circuit Protection

Yes

Temperature Protection

10K Ntc

Metal Coating

Copper

Mode of Production

SMT

Layers

Single-Layer

Base Material

FR-4

Certification

RoHS, ISO

Customized

Condition

Used

Transport Package

Anti-Static Bag Packaging/ Carton Packaging

Specification

60*30*8mm

Origin

China

HS Code

8536300000

Production Capacity

5000PCS/Month

Key features

Wide Customization Range: Supports 1S to 35S configurations with current options from 1A to 350A.

High-Quality Components: Features imported ICs from Japan, MOSFETs from USA, and Samsung components.

Smart Balance Function: Ensures consistent cell voltage to improve overall battery performance.

Comprehensive Protection: Includes over-charge, over-discharge, over-current, short circuit, and temp protection.

Rigorous Testing: Passed 1.2m drop test, short circuit, overcharge, and over-discharge tests.

Certified Quality: Holds ISO9001, ISO14001, CE, and RoHS certifications.

OEM/ODM Service: Provides full customization services for capacity, size, and design.

One Year Warranty: Offers a one-year warranty covering excellent safety performance.

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: ≤7.51h

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 choose?

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

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

The cathode of charger and load is different for different port wiring , the cathode of charger and load is same for same port wiring and the charging current is equal to the discharge current.

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

Equilibrium function is that high voltage cells will be discharged with resistor, waiting for the low voltage cells , to achieve the each cell voltage is consistent , to improve the battery performance for the whole group.

Q: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 is per your requirements,Also ODM / OEM is welcome.

Q:What is your term of payment?

PayPal, T/T, L/C, Any further questions, Welcome to contact our sales person by sending inquiry . Your satisfaction is our pleasure. Let's Join hands for mutual Benefits!