Shenzhen Delong Energy Co., Ltd.
Shenzhen Delong Energy Co., Ltd.
Founded in 2011, Delong Energy is a lithium battery manufacturer based in Shenzhen, China, with a 6,000 m² manufacturing facility in Dongguan.
Our customers include distributors, equipment manufacturers, installers, and project contractors worldwide. We support their projects with OEM/ODM development, battery production, and technical assistance.
Since 2011
Established
6,000 m²
Manufacturing Facility
120+
Countries & Markets Served
What We Manufacture
Manufacturing & OEM/ODM Capabilities
Our Dongguan facility brings battery pack production, engineering, and testing together. This allows us to support both established product designs and battery packs developed for specific equipment or project requirements.
Battery Pack Production
We assemble LiFePO4 battery packs, including cell integration, BMS installation, wiring, and final assembly.
Testing & Quality Control
We test battery packs for capacity, electrical performance, and BMS protection functions before shipment.
OEM/ODM Engineering
We customize battery packs based on voltage, capacity, dimensions, enclosure design, BMS functions, and communication interfaces such as CAN and RS485.
Quality & Certifications
Our manufacturing facility operates under an ISO 9001-certified quality management system, with quality checks at key stages of production.
Depending on the battery model, relevant compliance documents and test reports, including CE, IEC 62619, and UN38.3 documentation, are available for review.
Global Presence
Our Milestones
2011
September
Company Founded
Delong Energy was established in Shenzhen, China, focusing on lithium battery products and manufacturing.
2014
June
Manufacturing Expansion
Expanded production facilities with a 2,000 m² workshop to support growing battery manufacturing needs.
2017
December
Custom Battery Solutions
Expanded into customized LiFePO4 battery packs to meet different equipment and application requirements.
2020
December
Expanded Battery Product Range
Expanded our lithium battery product range to serve a wider variety of equipment and applications.
2021
December
Home Energy Storage Batteries
Began developing and manufacturing lithium battery solutions for residential solar energy storage.
2023
December
All-in-One Energy Storage
Introduced integrated energy storage solutions combining lithium batteries and inverter technology.
Discuss Your Battery Project
Tell us about your application, required specifications, or estimated order quantity. Our team will respond within one business day to discuss suitable options, pricing, or technical requirements.
