
Hunan Chalong Fly Technology Co., Ltd., established in 2018, is a subsidiary of Wuhan Changlong Group dedicated to the field of energy technology. The company integrates R&D, production, and sales, specializing in the innovation and manufacturing of lithium battery packs and solar energy storage products, providing customers with integrated green energy solutions.
The company boasts an experienced and professional R&D team with strong technical expertise in lithium-ion battery systems and solar power products. It possesses robust capabilities for continuous product development and large-scale manufacturing. In the field of lithium battery PACK, CLF has achieved a leading position in China, holding multiple invention and utility model patents. The company has participated in several major national projects, undertaking the development and production of specialized lithium-ion batteries and backup power supplies.
We focus on personalized design and customized manufacturing, having provided numerous domestic and international clients with high-quality, differentiated products and services. All products adhere to strict quality management systems and are supported by comprehensive after-sales service. They have gained widespread recognition and trust from users worldwide in industries such as commercial and industrial energy storage, electric vehicles, mechanical equipment, logistics and transportation, and marine applications.
Adhering to the core values of "Striving for Excellence and Putting People First," the company consistently provides reliable support to sectors including power, telecommunications, military, and new energy vehicles. Moving forward, we will continue to drive product innovation and quality enhancement. Through safer, more reliable, and higher-value performance products, we are committed to promoting the adoption of green energy and building a sustainable future together.









| Company Name: | Hunan Chalong Fly Technology Co., Ltd. |
|---|---|
| Business Type: | Manufacturer |
| Brands: | CLF |
| Employee Number: | 200~400 |
| Year Established: | 2000 |
| Total Sales Annual: | 20000000-35000000 |
| Company Location: | Unit 5-531 Huanghua Comprehensive Bonded Zone, No.109 Dayuan Rd, Changsha, Hunan, China |
| Factory Location: | Building 5, Xingwei Chuangxin Park, No. 57, South Section of Huangxing Avenue, Changsha Economic and Technological Development Zone |
Hunan Chalong Fly Technology Co., Ltd. Keep improving, solve problems for customers sincerely, and be recognized by the industry.
Professional customization: Become your reliable partner in energy solutions
At CLF, we are well aware that every brand and project has its unique demands and vision. We are not only a manufacturer of lithium batteries and energy storage products, but also your reliable R&D and manufacturing partner. With profound R&D accumulation, advanced production systems and strict quality control, we provide customers with all-round OEM/ODM services from concept to finished product, helping your brand stand out in the market.
Our service model
1. OEM cooperation: Your design, our meticulous manufacturing
If you already have mature product designs and technical solutions, we will become your most reliable manufacturing base. We strictly adhere to your specifications and standards, providing high-quality, high-efficiency and highly consistent production services to ensure that your design is precisely and stably realized.
2. ODM Cooperation: Your requirements, our full-process solution
If you have clear application scenarios and product concepts but need technical support and solution implementation, our ODM service will provide you with full-process support from product definition, solution design, R&D testing to mass production. You can share our technical platform and R&D achievements to quickly obtain mature and reliable exclusive products.
Cooperation process
The customization field we focus on

Production area






Testing area




At CLF, R&D innovation is at the core of all our work.
We have our own professional R&D and testing center, with R&D investment accounting for 10% of the total cost.
We possess independent research and development and production capabilities for core components of energy storage such as batteries, modules, battery management systems, and energy management systems. We have the comprehensive service advantage of vertical integration of the industrial chain and the design capability for overall solutions of energy storage systems.
We have 20+ members, which is 13% of the total staff (50% members have more than 5 years experience in energy storage industry)
R&D general manager has 18 Year battery development experience





1. Company Mission:
Provide the best solution according to customer requirements and site conditions for the sake of users.
2. Company Vision:
Take customer as the center, take market as the guide, take product as the link, provide one-stop solution, do the professional supplier in the industry.
3. Company Business Philosophy:
◆ Team specialization: gather professional and technical talents to provide first-class solutions.
◆ Management process: project process management, details determine success or failure.
◆ Service standardization: based on good faith, committed to excellent projects, win reputation and public praise.
Chalong Fly is an expert of lithium ion battery pack. The lithium ion battery mainly include NCM ,LiFePo4, LiCoO2, LiMnO2, sodium-ion battery etc. Our battery products are wide applied in industrial and commercial energy storage system, electric vehicles, machineries and equipments, logstic industry, boats and other industries.
We can provide one-stop battery pack solutions according to your unique requirements.

1. OEM and ODM
We have completely automatic production lines, which make sure the quality of our products.Currently, our capacity is much bigger than the current turnout.We eager to work with customers as the OEM and ODM partner.We have the strong R&D team, production lines management and sourcing ability.
2. Samples request
After customers confirmed our specification, we are very glad to provide samples for testing and qualification.The sample order is needed before we release to our factories. Small orders are acceptable!
3. Warranty
We guarantee that the available capacity of the lithium battery you purchased will remain above 70% of its initial value throughout the 2–5 year warranty period, ensuring long-term and reliable performance for your application.
4. Quick response
Feedback with customer's email within 12H.
5. Quick delivery
5-7 working days for the cell, 20-30 working days for the OEM battery pack.
6.Quality Certification
We have passed IS09001, IEC, CE, CB, UN38.3, MSDS.
| Market name: | North America,South America,Western Europe,Eastern Europe,Eastern Asia,Southeast Asia,Middle East,Africa,Oceania,Worldwide |
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| Contact Person: | Rosa Liu |