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Smart BMS Li-ion 4s 12V 40A BMS Lithium Battery

Name: Smart BMS Li-ion 4s 12V 40A BMS Lithium Battery
Brand: Dongguan Daly Electronics Co.,Ltd
SKU: 2136824602

Guangdong, ChinaDongguan Daly Electronics Co.,Ltd

US$19.90

1-9 Pieces

US$18.00

10-99 Pieces

US$16.70

100+ Pieces

Sample price:US$33.90/piece.Request sample

Product profile

Customization

Available

Color

Red

Type

Li-ion 4s12V 40A

Model NO.

RH-NMC 4S 40A

Charging Protection

Yes

Discharge Protection

Yes

Over Current Protection

Yes

Short Circuit Protection

Yes

Temperature Protection

Yes

Drop Proctection

Yes

Certificate

ISO9001:2015/RoHS/FCC/PSE/CE

Transport Package

1PC/Bubble Bag/Box

Specification

48*75*14mm

Trademark

DALY

Origin

China

HS Code

8507909000

Production Capacity

5000PCS/Day

Key features

Comprehensive Safety Protection: Includes charging, discharging, over current, short circuit, temperature, and drop protection.

Smart Active Balance Function: Balances cells at 35mA when voltage reaches 4.18V (Li-ion) or 3.6V (LiFePo4) to ensure uniform status.

Flexible Customization Options: Supports OEM/ODM, full customization, and flexible adjustments based on customer samples or designs.

Multiple Activation Methods: Activate via power board switch, Bluetooth module button, or charging connection to B-line.

No Minimum Order Quantity: Accepts orders of 1 PCS with no MOQ, catering to diverse customer requirements.

Certified Quality Assurance: ISO9001:2015 certified with CE, RoHS, FCC, and PSE product certifications for global compliance.

Professional Manufacturer: Established in 2015 with 421 employees, 44 R&D engineers, and 7 production lines.

Fast Delivery Time: Average lead time within 15 workdays for both peak and off-season periods.

Company profile

Production Process VisualizationFast DeliveryCustomization from Designs100% Finished Products Inspection

Dongguan Daly Electronics Co.,Ltd

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: 10 years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤6.59h

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad technical and service capabilities. It reports ODM, OEM for known brands, SDK availability, multiple customization modes, recent new-product development, 44 R&D engineers, and technical support extending through after-sales service. Production information cites advanced equipment, a complete production line, annual capacity of 6 million sheets, and products covering battery assemblies from 1 to 32 strings and protection systems up to 250A. Quality and management systems include 46 inspection staff, 40 test-equipment units, written procedures, ISO9001:2015 certification, and CE, RoHS, and FCC certifications. The supplier has overseas warehouse and agent/branch capabilities and has attended several offline trade shows. Financial records are indicated for multiple years, but the provided slices do not disclose substantive financial results. No specific customer names or documented customer cases are provided.

Supplier typeThe supplier presents itself as a manufacturer with R&D, ODM, OEM, and battery-system production capabilities. Its stated product scope includes battery assemblies from 1 to 32 strings and lithium battery protection management systems with working current up to 250A, while overseas warehouses and agents/branches support service delivery.

CertificationsThe supplier states that it holds an ISO9001:2015 certificate and has product certification capability for CE, RoHS, and FCC. These are explicit certifications or certification capabilities, although the slice does not provide certificate validity dates or detailed scopes.

After-Sales capabilityTechnology engineers are explicitly responsible for technical support during production and after-sales service. The supplier also reports overseas warehouse and overseas agent/branch capabilities, but it does not provide detailed after-sales response times, repair procedures, or service coverage by country.

R&D capabilityEvidence includes new products during the past year, 44 R&D engineers, responsibilities covering new-product development and technical support, ODM services, SDK availability, ERP integration, and ongoing digital-process construction. The slices support an established innovation and technical-development capability, although they do not quantify R&D investment or patent output.

Production capacityThe supplier states that it has advanced production equipment, a sound production line, annual capacity of 6 million sheets, and a complete product range. Quality resources include 46 inspection staff and 40 test-equipment units, while stated average lead times are within 15 workdays in both off-season and peak season; the capacity figure is not independently qualified by product or period.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full and flexible customization, and minor customization. ODM service, OEM service for known brands, and a product range spanning multiple battery-assembly configurations further support tailored production capability.

Product Q&A

Q:How to choose the suitable BMS?

Please provide: 1. Battery type (3.7V Li-ion or 3.2V LiFePo4); 2. Number of cells in series; 3. Peak power watt of load/motor and application type.

Q:How to activate the smart BMS?

Three methods: 1. Use the activation switch on the power board; 2. Press the button on the Bluetooth module; 3. Connect B-line to the total negative pole during charging.

Q:What is the balance function and do we need it?

It balances cells by discharging at 35mA when voltage reaches 4.18V (Li-ion) or 3.6V (LiFePo4). If voltage difference is large, replace cells with large gaps.

Q:What type of charger should I choose?

Use specific lithium chargers. LiFePo4 voltage = strings x 3.6V; Li-ion voltage = strings x 4.2V. Do not use lead-acid chargers.

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

No, we do not have an MOQ. We accept 1 PCS orders and support OEM/ODM for various capacities and sizes.