Best Selling 3s 12V 20A Protection Board Lithium Li Ion Battery with PCB

Name: Best Selling 3s 12V 20A Protection Board Lithium Li Ion Battery with PCB
Brand: Changsha Deligreen Power Co., Ltd.
SKU: 893850805

Hunan, ChinaChangsha Deligreen Power Co., Ltd.

US$6.00

1-49 Pieces

US$5.60

50-999 Pieces

US$5.20

1,000+ Pieces

Product profile

Customization

Available

Certification

RoHS, CE

Recyclable

Model NO.

SY3S20A

Products Name

Battery Management System

Port

Common/Seperate

Over Discharge Protection

Yes

Over Charge Protection

Yes

Short Circuit Protection

Yes

Over Current Protection

Yes

Transport Package

Standard Express Packing

Specification

Standard Size

Trademark

Deligreen

Origin

China

Production Capacity

10000 Piece/Month

Key features

Comprehensive Protection Functions: Includes over charge, over discharge, over current, short circuit, and temperature protection.

Customizable PCM Sizes: Develop PCM in different sizes and structures according to customer requests.

High-Quality Components: Manufactured with high-quality imported Mos and IC for long cycle service life.

Multi-Cell Compatibility: Design available for LiFePO4, LiMn2O4, and Li-polymer batteries.

RoHS and CE Certified: Product meets RoHS and CE certification standards for safety and quality.

Recyclable Material: The product is fully recyclable, supporting environmental sustainability.

Professional Technical Support: Expert assistance available for BMS selection and troubleshooting.

Wide Application Range: Suitable for various lithium battery packs and diverse power requirements.

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: ≤8.99h 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:Which current of the PCB should I choose?

Take 13S 48V pack as an example: Which PCB you should choose depends on the power of your motor or the current limitation of your controller. Below 350W ,you can choose 16A. Below 500W, you can choose 18A, Below 800W, you can choose 35A,Below 1KW, you can choose 60A. Above 1200W, the same. If you are not sure, please contact us freely.

Q:Can I use bigger size of PCB than it should?

Suppose you need 60A PCB but you chose 80A, that is OK. 80A allows higher current.Nothing bad but a bit higher price. But if you choose 50A, sorry it is too small. So you can choose higher spec but can't choose lower one than it should have been.

Q:What kind of charger should I choose?

Lithium battery must be charged by lithium battery charger. You can't charge it with a lead acid battery charger. The lead acid battery charger might damage MOS pipe of the PCB.

Q:If I have PCB, do I need any balancers?

Yes if you can add QNBBM balancers, that would be perfect. The Main function of PCB is to prevent batteries from over charged or over discharged,over heated etc. All the PCB /BMS in the world balance performance is not satisfactory. With balancers added, the batteries lifespan will be longer and the capacity will be fully used.

Q:How to judge if my PCB is broken or not?

If you'd like to judge if the PCB is fine or not, please use a multi-meter and see if the voltage of each cell is close to each other or not.when the volt difference is 1V, the battery will have such performance:driving distance is short, cut off when started, charging time is very short. under such situation , some battery is defective. When the PCB is broken, the battery can't be discharged when you measured the battery volt is normal.