Golf Carts | E-Bikes | Robots | Start-Stop Systems
Different applications demand different battery behaviors.
A golf cart doesn’t draw current the same way an e-bike does. A service robot doesn’t have the same voltage platform as a start-stop automotive system. That’s why “one-size-fits-all” batteries fail in professional environments.
A properly engineered custom battery pack ensures that:
Voltage & capacity match your real operating load
Peak discharge current meets motor or actuator requirements
Cycle life aligns with your usage frequency
Thermal behavior remains safe and stable
Mechanical shape fits your actual device or vehicle
The BMS communicates correctly with your controller (CAN/UART/RS485)
Whether your system needs long runtime (golf cart), lightweight power density (e-bike), 24/7 reliability (robots), or strong cold-cranking performance (start-stop applications), a custom battery pack ensures the highest performance, safety, and longevity for your device.
We design and manufacture custom lithium battery packs tailored to your exact specifications—from high-power cylindrical cells to solid-state and waterproof modules.
Versatile, proven, and widely available—perfect for general-purpose battery needs.
18650 packs remain a favorite for OEMs needing reliable, flexible, and cost-effective solutions.
✅ Panasonic, Samsung, LG cell options
✅ Easy to configure in various voltages/capacities
✅ Great for maintenance or drop-in replacements
Stable, safe, and long-lasting—best for energy storage.
LFP chemistry offers superior thermal stability and 3000+ cycles, making it the best fit for solar, RV, telecom, and marine storage.
✅ 12V / 24V / 48V options
✅ Prismatic, cylindrical, or modular form
✅ UL, CE, UN38.3 compliance ready
Engineered for safety, cost-efficiency, and exceptional performance in extreme environments.
Leveraging abundant sodium chemistry and thermally stable materials to ensure reliable operation in a wide temperature range from −40 °C to 100 °C.
✅ Safer chemistry – Low thermal-runaway risk and built-in flame resistance
✅ High-temp stability – >95% capacity at 50 °C; operates continuously up to 100 °C
✅ Cold-ready & fast-charging – >90% capacity at –20 °C; ~80% charge in 18 min
✅ Cost-effective & long-life – Abundant sodium, no cobalt/lithium, 1000s of cycles
A reliable custom battery pack is engineered through a structured process—from requirements to mass production.
We start by understanding how the battery will be used: application type (golf cart, e-bike, robots, start-stop), voltage/capacity targets, peak/continuous current, operating temperature range, installation space, and expected lifecycle.
We select the best-fit chemistry and define the pack architecture: LiFePO4 for safety and long cycle life, NMC (18650/21700) for compact high energy density designs, and Sodium-ion for start-stop duty cycles and cold-weather reliability. Series/parallel layout and current capability are engineered based on real load profiles.
We configure protection and communication to match your system: OVP/UVP/OCP/OTP thresholds, balancing strategy, current limits, and optional CANBus / UART / RS485 integration for controllers and vehicle systems.
We design the enclosure/module structure, mounting points, connector locations, cable routing, strain relief, and vibration considerations—so the battery fits your device, not the other way around. Options can include moisture/dust protection by design.
Prototype samples are built for verification: electrical performance, BMS functional checks, thermal behavior under load, and mechanical fitment. Samples are provided for customer integration and system-level testing.
Quality and compliance are controlled throughout production: incoming cell inspection, in-process checks, final inspection, and documentation support such as UN38.3 transportation compliance and CE-related files where applicable.
After sample approval, mass production begins with stable cell sourcing, batch traceability, controlled processes, and secure export packaging. We support global delivery and consistent lead times for repeat orders.
From last-mile eMobility to off-grid storage—Junda battery packs are engineered to perform in the real world. Explore how our custom lithium battery solutions are used across industries that demand reliability, safety, and long-term performance.
Answers to common questions about custom battery pack engineering, certifications, chemistries, timelines, and OEM options.
Custom lithium battery packs are tailor-made battery solutions engineered to meet specific voltage, capacity, and form factor requirements for various applications. These packs typically include custom-designed BMS, casing, and wiring tailored to the device or system.
Custom battery pack systems are widely used in:
Off-the-shelf packs have fixed specifications, while custom power packs are designed around your electrical, mechanical, and safety requirements. This ensures optimal performance, longer cycle life, and better integration into your system.
Yes. We provide custom LiPo battery packs with different cell configurations (e.g., 3S, 4S, 6S), capacities, and discharge rates. They are ideal for UAVs, RC devices, and compact electronics requiring lightweight, high-energy solutions.
Absolutely. We design and produce custom pack battery systems for industrial devices with features like high-discharge rates, smart BMS integration, IP-rated casings, and high-temperature tolerance.
Yes. We specialize in custom battery packs for medical equipment, ensuring compliance with healthcare safety standards, including IEC certifications, with options for sterilizable casing and precise power calibration.
We offer:
All chemistries are engineered based on your project’s energy density, safety, and budget needs.
Yes. Our custom built battery packs range from compact 500mAh units to high capacity custom battery packs exceeding 100Ah, used in e-bikes, robotics, and energy storage.
We offer full custom battery pack engineering, including:
Our custom battery pack assemblies meet global safety and transportation standards such as:
Lead time varies based on complexity, certification needs, and order volume.
We can customize:
Yes. As a custom battery pack manufacturer, we provide white-label and OEM services for brand owners, including packaging, logo printing, and NDA-secured development.
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.
