Rigorous, pragmatic

PLB are all strivers

Dongguan Power Long Battery Technology Co, Ltd. (PLB),

Company Overview

PLB is located in Qingxi Town, Dongguan City, Guangdong Province, near Shenzhen city.

Provides new energy integration solutions for global customers,focus on the high and middle end of the new energy and energy storage field.Specialized in the R&D, manufacturing and sales of 26650 cylindrical cell and battery pack (system).

With advanced and complete equipment and facilities for R&D and analysis of batteries and battery packs (systems) A excellent and experienced design and technology team of battery cell and battery pack(system) .

Won the qualifications and titles of Guangdong High-tech Enterprise and Advanced Private Enterprise.


The management system has passed IATF16949, ISO9001, ISO14001, ISO45001 and other certifications.

Products have passed UL, IEC, RoHS, Reach and other international authoritative standards certification.

Core business

Product service

Provide customers with the excellent battery solutions. Excellent and professional technical support and product cycle life service during pre-sales , sales and after-sales.

Specialized in R&D, manufacturing and sales of 26650 lithium battery cell and battery pack.

Main Product

26650 cylindrical capacity LiFeO4 battery cell,26650 cylindrical capacity NCM battery,26650 cylindrical high rate(discharge 50C)LiFeO4 battery cell.

Medium and small power battery modules and systems; medium and small energy storage battery modules and systems.

Product with the highly security ,reliability meets the environments and the application requirements.the industry-leading performance.

Established the strong technical support and leading quality guarantee to create high-quality products with excellent performance from product basic R&D,application and process R&D,equipment capabilities ,quality control capabilities ,etc.

PLB insists in service first, customer oriented to provide domestic and overseas customers with good product.

Cell R&D

Insist on independent innovation, forward-looking, scientific and systematic research and development of basic cell technology, product development, and process technology.

With high product reliability and high safety as the core, comprehensive DOE experimental design and verification of design formulas and processes are carried out. Improve product performance, product manufacturability.

In-depth study of the cell material mechanism. Material physical and chemical properties, crystal structure, morphology analysis, thermodynamic analysis, thermal runaway research.

Set up a basic research and development material test room of battery cell. Provide sufficient test and analysis conditions and data for material research and incoming material inspection.

Set up a pilot line for research and developmen of battery cellt. Provide small test and pilot test support for battery cell research and development, trial production of battery cell design ,and new material certification, etc.

Set up battery safety and reliability test room. Plan and execute comprehensive safety, environmental, and electrical performance tests of products.

Most of the R&D team members have more than 15 years of experience, have deep research and development project skills, project management capabilities, and advanced product design concepts.

Battery system R&D

Fully grasp the customer's application scenarios and requirements, and accurately design the module and battery system to meet customer needs.

Research on product mechanical safety and structural stability to meet the needs of various scenarios such as transportation and vibration; research on current field, thermal field, simulation, etc.; research on electronic and electrical performance.

From R&D, design to manufacturing, BMS takes the pursuit of ultimate reliability and stability as the highest principle, and has functions such as parameter detection, battery safety management, balance management, SOC/SOH detection and calculation. It has been widely used in the fields of power and energy storage.

Establish a battery system R&D and test laboratory with comprehensive analysis and testing capabilities for battery modules, battery packs, and BMS. It can meet the requirements of electronics, mechanics, thermal, high and low temperature environment, and aging test. Advanced and complete battery system testing and analysis methods.

The battery system R&D personnel have the ability to deeply research and grasp the needs of customers, and develop personalized, customized and integrated solutions for customers.

Cell Manufacturing

The production line of battery cell is highly automated and intelligently manufactured.

The equipment has high degree of automation, high precision and stability. Conduct the automatic circulation of mechanical arm between processes, with high output efficiency.

Build a comprehensive MES management system and BDM system from raw materials, production processes, equipment status, environmental status, and quality management. Online and visual monitoring of key processes in battery cell manufacturing.

Strict battery quality traceability management. Each battery cell has a unique serial number, including model, batch, production line number, and serial number information, which can be traced back to the corresponding production line, batch, machine, important raw materials, and related quality information.

Strict battery manufacturing environmental conditions. Efficient dehumidification control,dust control with high-cleanliness, temperature control , etc.

PACK Manufacturing

The battery pack production line is highly automated and intelligently manufactured.

The equipment has high degree of automation, reliability, stability and high manufacturing efficiency.

The module welding adopts automatic equipment to do spot welding, and the whole series is equipped with Japanese Miya machines, and the welding quality is stable and reliable.

The aging testing equipment of battery pack has high accuracy, data collection throughout the entire process, and 100% high-precision aging testing of all finished product.

Strict battery pack (system) manufacturing environmental conditions. Such as static control and so on.

Establish a battery pack MES (Manufacturing Execution System) to fulfill the full traceability of the applied raw materials, manufacturing process, and quality of each battery pack.

Implement lean manufacturing principles to continuously improve product quality and manufacturing efficiency.

All-round and full-process quality management

Comprehensive quality management

Plan and effectively implement all-round and full-process quality management functions, according to IATF16949 requirement.

New product quality (NPI) management. According APQP、PPAP requirement, strictly implement the quality plan and control of new product.

Raw materials quality management. Strictly control the raw materials quality from supplier qualification management, new materials certification management, raw materials inspection management and other aspects.

Production process quality management. Strictly control the products production quality from equipment, operator, materials, method, environment and other aspect.

Product shipment quality management. Strictly control shipment risk, to pursue zero defect as the goal, extremely low level of customer complaints.

Product after-sales quality management. Complete product after-sales service system and process, product RMA management. Professional and experienced after-sales service personnel. After-sales feedback is fast.

Product quality continues to improve

Carry out 6 SIGMA system improvement method and DMAIC improvement methodology effectively. Implement 6 SIGMA tools such as FMEA,DOE,MSA,SPC and lean manufacturing.

Adhere to high quality brand strategy. Implement the principle of product safety and quality priority, and create comprehensive competitiveness of product quality, technology and cost.

Safety and reliability quality management

Safety and reliability test resources

Establish product safety and reliability laboratory. It is equipped with comprehensive product safety and reliability testing equipment, possessing comprehensive testing and analysis capabilities for product electrical performance, safety, reliability, mechanical, electrical, and environmental performance.

Establish product safety and reliability test standard system. The test standard meet and exceed IEC62133/IEC62619、UL1973/UL1642、UN38.3、GB31484/GB31485/GB31486 requirements.

Carry out comprehensive testing, analysis and control on the safety and reliability of new products.

Establish product safety and reliability method system. Through rigorous and scientific testing methods, to provide product performance, reliability test data and trends, and then continue to improve product safety and reliability quality.

Safety and reliability quality management

Establish and strictly implement product safety and reliability test cycle and frequency standards.

Execute comprehensive testing, analysis and control on the safety, reliability and quality of new product.

Execute the periodic ON-Going test on the safety, reliability quality of mass production products, periodically ensure the safe and reliable quality of the products.

We promise to meet and exceed the safety and reliability requirements of your products in the whole cycle life of the product.

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