Junda’s custom high-temperature lithium battery packs deliver safe, stable, and long-lasting power across a wide thermal range. Designed for industrial and IoT systems operating in -40°C to +85°C conditions, our solutions combine certified materials, high-performance 18650 cells, and tailored protection to meet mission-critical demands—without compromising on cost or reliability.
Not every industrial application requires operation at 135°C or higher—but many demand one thing consistently: safe and stable performance under extended heat and cold exposure. That’s where Junda’s high-temperature lithium-ion technology excels.
With over 200 customized projects delivered, Junda offers proven lithium battery pack solutions that operate reliably in ambient temperatures ranging from -40°C to +85°C. These battery packs are engineered for industrial-grade use where longevity, cost-efficiency, and robust thermal resistance are critical.
We utilize high-temperature cylindrical 18650 cells, integrating them into rugged battery packs that meet international safety standards like CE, ROHS, REACH, and UL. Designed as drop-in replacements for standard 18650 or 21700 battery packs, they deliver superior performance in extreme environments.
Automotive emergency systems (eCall, T-Box)
GPS and sensor modules
Smart agriculture and IIoT devices
Infrastructure and environmental monitoring
Long-life IoT terminals in outdoor or unconditioned environments
From GPS tracking in commercial fleets to sensor systems in harsh outdoor environments, CMB’s custom lithium battery packs are built to maintain performance, safety, and longevity even under extreme thermal stress.
Specs: 3S1P configuration using 18650 2000mAh high-temp cells
Temp Range: -40°C to 85°C
Performance: 500+ cycles with ≥80% capacity retention
Specs: Single 18650 2900mAh cell
Temp Range: -5°C to 50°C
Performance: Long-term stability with 500-cycle life
Specs: 1S2P configuration, 18650 3.6V 5800mAh
Temp Range: -12°C to 55°C
Form Factor: Customizable for specific enclosures
Specs: 1S3P, 18650 2900mAh high-temp cells
Temp Range: -40°C to 85°C
Cycle Life: 300 cycles with ≥70% capacity retention
Specs: 2S1P configuration using 2900mAh cells
Temp Range: -40°C to 85°C
Benefit: Higher charging/discharging currents for industrial-grade use
Specs: 1S4P, using 18650 2900mAh high-temp cells
Temp Range: Up to 85°C
Application: Extended runtime for advanced sensor systems
Specs: 2S1P 18650 configuration
Temp Range: -40°C to 85°C
Design: Shape and size tailored for compact outdoor use
Yes. Junda’s high-temp lithium battery packs are built to perform in harsh environments — from freezing cold to intense heat — without losing stability or safety.
We mostly use 18650 high-temperature cells that meet global standards like CE and UL. They’re tested for consistent output and long cycle life even under extreme temperatures.
Absolutely. These are rechargeable lithium-ion batteries, just with better thermal endurance. Most models offer 300–500 charge cycles with strong capacity retention.
Junda’s batteries power GPS systems, IoT sensors, T-Boxes, smart agriculture tools, and other electronics that stay outdoors or in high-heat industrial areas.
Yes. Junda offers fully customized solutions — from voltage and capacity to size and wiring — to ensure the battery integrates seamlessly with your device.
With more than a decade of experience, Junda delivers precision-engineered lithium battery packs tailored for your unique applications. Here’s what makes us a trusted partner for global B2B clients:
At Junda, our engineering team is led by a senior battery architect with 15+ years of hands-on experience at CATL, BYD, and other industry leaders. Backed by a cross-functional team of 6 engineers, we provide full-cycle development from design and simulation to testing and certification. We’ve completed over 1,000 custom battery pack projects across sectors like eMobility, energy storage, medical devices, and industrial tools—always focusing on safety, reliability, and performance.
Junda operates under a strict ISO 9001:2015-certified quality management system, overseen by our QA director and implemented across every department. From incoming cell inspection to final pack aging tests, every step is digitally tracked and traceable. Our system ensures stable supply chain sourcing, controlled assembly processes, and compliance with industry benchmarks such as UN38.3, CE, and IEC 62133.
Junda’s battery pack assembly process integrates mechanical, electrical, and thermal design tailored to your use case. Our capabilities include IP67/IP68 waterproof housing, high-discharge BMS systems, CAN/RS485 communication protocols, and reinforced designs for vibration or extreme environments. We conduct cell sorting, welding, insulation, balancing, and aging tests in-house to ensure consistent performance and longevity.
From your first inquiry to final delivery, we provide responsive, multilingual support backed by a dedicated sales and engineering team. We guide clients through technical evaluation, prototyping, compliance, and logistics—ensuring a transparent, stress-free experience. Whether you need an urgent sample or a long-term OEM solution, we’re here to make your battery development process efficient and reliable.
Share your voltage, size, application, and quantity needs—we’ll assess your project quickly.
Our engineers will optimize the design, confirm details, and provide samples if needed.
Once approved, we start production and arrange fast, secure shipping to your destination.
Need a custom lithium battery pack? Just send us your specs—we’ll help you choose the right voltage, case, and configuration for your application.
At JUNDA, we make customization easy. Follow these 3 simple steps to start today:
Send your battery requirements — voltage, capacity, casing type, or upload drawings/photos.
We’ll evaluate your specs and recommend the best configuration. A detailed quote will be sent within 24 hours.
After approval and deposit, we start production. Shipping and tracking will be arranged for fast, secure delivery.
