Power Behind Every Flight
From Vision to Reality — Global Leader in Total Battery Pack Solutions for Drones
Discover how Defond delivers high-performance battery solutions through innovation, precision, and full-chain manufacturing capabilities.
Technology Partners
Collaborating with industry-leading partners to drive innovation and deliver reliable, high-performance solutions.
Drone Power System Solutions
Integrated Cell, BMS & PACK Manufacturing
Our Services
Custom Battery Solutions
Defond provides high energy density, long cycle life, and customized battery cells tailored to various drone applications, from consumer to industrial systems.
In-house BMS Development
The company offers self-developed chip-level Battery Management Systems (BMS) that ensure efficient power management, long-lasting battery health, and operational safety.
PACK Assembly & Manufacturing
Defond provides integrated battery pack assembly services, combining battery cells and BMS for customized, high-performance solutions.
Drone Battery R&D & Design
The company specializes in designing and developing battery systems tailored to the specific needs of different drone industries, ensuring optimal performance and stability.
Global Technical Support & After-Sales Services
Defond offers comprehensive global support, including technical assistance, product upgrades, and battery management training.
Industry-Specific Solutions
Defond offers tailored battery solutions for industries like agriculture, power inspection, and emergency response, optimizing drone performance in each application.
News center
21700 Battery Cells: 3.6V 5500mAh Lithium-Ion Cell
21700 battery cells offer a practical option when you need a balance of capacity, discharge performance, and compact cylindrical construction.
21700 Li Ion Cell 3.6V 5800mAh for Demanding Applications
Choosing a 21700 li ion cell requires more than checking its nominal voltage and capacity. You also need to consider
Rechargeable Battery Solutions: USB-C 9V Battery for Instruments
Replacing disposable 9V batteries can become inconvenient when you use multimeters, instruments, meters, microphones, or access locks regularly. Rechargeable battery
DefondTech is a trusted drone battery manufacturer dedicated to delivering high-performance lithium battery solutions for UAV applications worldwide. From custom battery pack design to advanced BMS development, we support customers across agricultural drones, industrial UAVs, FPV platforms, and commercial drone projects.
Furthermore, our integrated manufacturing capabilities enable strict quality control throughout the entire production process. This helps ensure reliable performance, enhanced safety, and long service life for every battery solution.
In addition, DefondTech provides OEM and ODM services tailored to specific project requirements. Whether customers need lightweight drone batteries, high-capacity UAV power systems, or customized energy solutions, our engineering team can deliver professional support from concept to production.
As a result, global customers choose DefondTech as their long-term partner for innovative and dependable drone battery technology. Explore our battery solutions or contact our team to discuss your next UAV power project.
Leaving a Message
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- Administrator: holly.cheng@sunpowernewenergy.com
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Owen Wu:+86-18818788885 (Wechat/Whatsapp)
owen.wu@defondtech.com -
Joe Zhou: +86-13825217651 (Wechat)
sales@defondtech.com - Shenzhen office: Shentengyao Building, Hexiu West Road, Fuyong Fuhai Street, Bao'an District, Shenzhen City, Guangdong Province, 518100, China
- Factory 1: No. 8 Xingyuan Road, Huangqiao Industrial Park, Taixing City, Jiangsu Province, China
- Factory 2: No. 36, Xinping Avenue, Yongxing Town, High-tech Zone, Mianyang City, Sichuan Province, China