What certifications does this product have?

The product is certified with RoHS and CE.

What is the minimum order quantity (MOQ)?

The minimum order quantity is 2 pieces.

What is the maximum suggested wire length for series balancers?

The maximum suggested wire length is 0.5 meters (1.5 feet) for all multiple series balancers.

Hot Selling DIY Lithium Battery with Protection Board External Field Power Module 4s

Name: Hot Selling DIY Lithium Battery with Protection Board External Field Power Module 4s
Brand: Changsha Deligreen Power Co., Ltd.
SKU: 896296395

Hunan, ChinaChangsha Deligreen Power Co., Ltd.

US$72.00

1-9 Pieces

US$71.00

10-49 Pieces

US$70.50

50-999 Pieces

US$70.00

1,000+ Pieces

Product profile

Customization

Available

Certification

RoHS, CE

Recyclable

Model NO.

QNBBM-B

Condition

New

Battery Type

Li Ion/Lead Acid/Lto/Supercapacitor

Brand

Qnbbm

Logo

Customizable

MOQ

2PCS

Certificate

RoHS Ce

Shipment

DHL/UPS/FedEx/E-Packet

Balance Current

Volatge Differences

1V-3A

Working Effciency

>94%

Voltage Difference

<10mv

Balance Method

Energy Transfer& Dynamic

Working Voltage

1.8V-5V

Battery Count Limited

Unlimited

Power Consumption

<50MW Per 1s

Transport Package

Standard Express Packing

Specification

15*7*2

Trademark

Deligreen

Origin

China

HS Code

9032899090

Production Capacity

10000 Piece/Month

Key features

High Efficiency Balancing: Working efficiency exceeds 94% with dynamic voltage-amperage balancing technology.

Low Idle Power Consumption: Idle current draw is less than 50mW per second, ensuring energy savings.

Wide Voltage Compatibility: Supports working voltage from 1.8V to 5V and balances voltage differences under 10mv.

Flexible Series Configuration: Modules work with 3, 4, 5, 6, or 8 batteries in series (3S to 8S configurations).

Universal Charger Support: Compatible with all charger amperage and voltage inputs for versatile usage.

Certified Quality: Products are certified with RoHS and CE standards for safety and compliance.

Professional Technical Support: Access to professional technical assistance for correct wiring and installation guidance.

Low Balance Current: Features a balance current of 6A with energy transfer and dynamic balancing methods.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceExperienced Team

Changsha Deligreen Power Co., Ltd.

Hunan, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Minor Customization CertifiedExport Year: 6 Years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤9.12h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryChangsha Deligreen Power Co., Ltd. is a China-based trading company established in 2017, with 12 employees and a valid import/export license. It offers battery chargers, EV charging products, cables, and battery-monitoring products, and reports broad export-market coverage. The supplier states annual production of 10,000,000 active battery balancers and order fulfillment within 15 workdays in both peak and off-peak periods. However, it has no supplier-management-system certification, no new products launched in the past year, no ODM, major-brand OEM, or SDK capability, and only minor customization capability. Service governance is weakly documented: complaint handling and corrective/preventive-action procedures have no written procedures or records. It has an overseas warehouse but no overseas showroom, agents or branches, or offline trade-show participation. Customer feedback is self-reported as 99.5% positive, but no customer cases are provided.

CertificationsThe supplier’s certification of management systems is explicitly recorded as NIL. No management-system certification is evidenced in the provided information.

After-Sales capabilityThe supplier claims fast and reliable after-sales service and 99.5% positive customer feedback, and it has an overseas warehouse. However, it reports no written procedures or records for complaint handling or corrective and preventive actions, with no overseas agents or branches, so formal service capability is inadequately controlled.

R&D capabilityThe supplier reports two years of total R&D-engineer experience, but no new products were launched during the past year. It also states no R&D product-information progress, no ODM service, no major-brand OEM capability, and no available SDK, indicating limited documented innovation capability.

Production capacityThe supplier reports 10,000,000 pieces of annual active battery-balancer output, order fulfillment within 15 workdays in both peak and off-peak seasons, and six quality-control staff, while operating with 12 employees overall. These figures support stated production and delivery capacity, although its trading-company classification means manufacturing arrangements are not fully clarified.

Product Q&A

Q:What is the working efficiency of this module?

The working efficiency is greater than 94%.

Q:Can this module work with different battery series configurations?

Yes, the modules may work with 3, 4, 5, 6, or 8 batteries in series (3S, 4S, 5S, 6S, or 8S).

Q:What is the idle current draw of the product?

The idle current draw is less than 50mW per second.

Q:Does the product come with wiring to connect to the batteries?

No, it does not come with the wiring to connect to the batteries, but all 1S Single Balancers come with interconnecting and battery wiring.

Q:How can I verify if the balancers are connected correctly?

You can measure the battery voltage with a multi-meter and listen for a high-frequency sound. If connected correctly, they will produce a quiet high-frequency sound; the more balanced, the softer the sound.