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.

DEFON Battery

Powering Innovation. Delivering Reliability.