Custom Lithium Battery Packs for UAV, Mobile Devices & Energy Storage.
- No compromise on quality service
OEM / ODM Manufacturing from China
Reliable Battery Solutions Without Compromising on Safety or Performance — That’s What Sets Us Apart.
From UAV battery packs to mobile device batteries and energy storage solutions, DEFON Battery delivers dependable power, advanced engineering, and consistent quality for customers worldwide.
Powering Devices. Delivering Reliability.
Find the Right Battery Solution
Drone Battery Packs
High-performance lithium batteries for UAV and agricultural drone applications. Designed for long flight time, high discharge rates, and reliable field operation.
Popular Models: 6S, 12S, 14S, Smart UAV Batteries
Smartphone Batteries
OEM replacement and custom lithium battery solutions for smartphones, handheld devices, and portable electronics.
Applications: Mobile Phones, POS Systems, Smart Devices
LiFePO4 Battery Packs
Safe, long-life lithium iron phosphate batteries for energy storage, backup power, and renewable energy applications.
Features: 4000+ Cycles, High Safety, Stable Performance
Portable Power Station Batteries
High-capacity battery systems for portable energy storage, outdoor power, and emergency backup solutions.
Applications: Camping, RV, Backup Power
Custom Battery Solutions
OEM & ODM battery pack development including custom voltage, capacity, housing design, BMS integration, and private labeling.
From Prototype to Production
Our Strength
High-performance lithium battery solutions engineered for safety, reliability, and long-term power delivery across demanding applications.
Why DEFON
Your application deserves reliable energy — and that’s what we deliver.
Custom Design
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Quality Cells
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Smart BMS
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OEM / ODM
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Global Supply
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Featured Battery Solutions
Custom Lithium Battery Packs for UAV, Mobile Devices & Energy Storage Applications
About DEFON Battery
Custom Lithium Battery Solutions for a Connected World
DEFON Battery is a specialized manufacturer of lithium battery packs and energy storage solutions, serving customers worldwide with reliable OEM and ODM battery products.
Headquartered in Dongguan, China, we focus on the design, assembly, testing, and manufacturing of high-performance battery systems for UAVs, mobile devices, industrial equipment, and energy storage applications.
Our mission is simple:
To deliver safe, reliable, and application-focused battery solutions that help customers power their products with confidence.
What We Build
DEFON Battery specializes in:
- Drone & UAV Battery Packs
- Agricultural Drone Batteries
- Smart Drone Batteries
- Smartphone & Mobile Device Batteries
- Tablet & Handheld Device Batteries
- LiFePO4 Battery Packs
- Portable Power Station Batteries
- Custom Lithium Battery Solutions
- Next-Generation Battery Technologies
Whether you require a standard battery pack or a fully customized solution, our engineering team works closely with customers to develop products that meet performance, safety, and cost objectives.
Engineering-Driven Battery Manufacturing
Battery performance is determined by more than capacity and voltage.
At DEFON, we focus on the engineering details that directly impact reliability:
- Cell Selection & Matching
- Battery Management System (BMS) Integration
- Thermal Management
- High-Rate Discharge Performance
- Cycle Life Optimization
- Safety Protection Design
- Manufacturing Consistency
Every battery pack is designed with real-world operating conditions in mind, helping customers achieve longer service life, stable performance, and dependable field operation.
OEM & ODM Services
We support OEM and ODM projects from concept to production.
Our capabilities include:
- Custom Battery Pack Design
- Battery Assembly & Integration
- BMS Development & Selection
- Private Label Manufacturing
- Product Testing & Validation
- Small Batch to Mass Production
Whether you are launching a new product or optimizing an existing design, DEFON provides flexible manufacturing support and responsive engineering collaboration.
Markets We Serve
Our battery solutions support a wide range of industries:
- Unmanned Aerial Vehicles (UAV)
- Agricultural Drones
- Consumer Electronics
- Portable Devices
- Industrial Equipment
- Energy Storage Systems
- Smart Power Applications
Customers choose DEFON because we combine engineering expertise, manufacturing flexibility, and a commitment to long-term product reliability.
Looking Ahead
As battery technology continues to evolve, DEFON is actively exploring emerging technologies including semi-solid-state and solid-state battery systems to support the next generation of high-performance energy storage applications.
We believe the future of energy storage will demand higher safety, greater energy density, and smarter power management—and we are committed to helping our customers stay ahead of that future.