Custom Battery Pack Manufacturer for OEM/ODM Lithium Battery Solutions
Large Power designs and manufactures custom lithium battery packs for medical devices, industrial equipment, security systems, robotics, and infrastructure applications. Our engineering team supports cell selection, voltage and capacity matching, BMS/PCM design, enclosure integration, charging compatibility, safety testing, and OEM/ODM production for reliable device-level power.
Why Choose Large Power as Your Custom Battery Pack Manufacturer?
- Strong Custom Battery Manufacturing Capacity
Our state-of-the-art, ISO 9001-certified facilities are equipped for both rapid prototyping and high-volume production runs. We implement rigorous quality control at every stage, from cell sourcing to final assembly, ensuring every custom battery we produce meets the highest standards of quality and consistency. - High Technologies with Proven Records
We thrive on solving the toughest power challenges. Our engineering team has a proven track record of developing innovative custom power solutions for the most demanding environments. Our expertise includes:- Custom Low-Temperature Batteries:Delivering reliable power in freezing conditions.
- Custom High-Temperature Batteries:Ensuring safety and performance in extreme heat.
- Custom Explosion-Proof Batteries:Providing IECEx-certified power for hazardous locations.
- Custom Semi-Solid State Batteries:Pushing the boundaries of energy density and safety.
- A Collaborative Engineering Partnership
We work as an extension of your team. Our engineers collaborate with you from the initial design phase to understand your device’s unique power profile, mechanical constraints, and performance goals. This partnership ensures the final customized battery is perfectly optimized for your application. - Resilient and Reliable Supply Chain
We mitigate supply chain risks by building strong, long-standing relationships with the world’s leading Tier-1 cell manufacturers, including Panasonic, Samsung, LG, and Saft. Our robust supply chain management ensures access to authentic, high-quality components, providing the stability and predictability your production schedule demands.
Custom Battery Pack by Chemistry: Designed for Your Specific Needs
The core of every great battery pack is its chemistry. We are a technology-agnostic custom battery manufacturer, allowing us to select and engineer the ideal chemistry to meet the specific performance, safety, and cost requirements of your device.
Custom Lithium-Ion Battery Packs
Our lithium-ion (NMC/NCA) batteries offer high energy density, lightweight design, and smart BMS integration for safety and accurate fuel gauging—ideal for medical devices, drones, laptops, and other performance-driven portable electronics.
Custom Lithium Polymer (LiPo) Battery Packs
Our LiPo batteries are engineered for maximum design flexibility, featuring ultra-thin, lightweight, and custom-shaped cells that fit tight spaces and unique device profiles—perfect for wearables, AR/VR headsets, IoT sensors, and slim electronics.
Custom LiFePO4 Battery Packs
Our LiFePO4 batteries offer outstanding safety, thermal stability, and long cycle life—over 2,000+ cycles—making them ideal for medical carts, robotics, backup power, and electric vehicles where long-term reliability and lower TCO matter most.
Custom Battery Pack by Shape
The physical form of your battery is as critical as its chemistry. We engineer packs in both standard and fully custom shapes to ensure perfect mechanical integration and optimal space utilization.
Custom 18650 Battery Pack
The 18650 cylindrical cell offers high reliability, strong thermal performance, and durability. By configuring cells in series and parallel, we deliver custom 18650 battery packs tailored to your exact voltage and capacity needs—ideal for robust, cost-effective power solutions.
Custom Pouch Shape Pack
Our custom pouch cell packs break the limits of rectangular designs, enabling curved, L-shaped, circular, or ultra-thin batteries that fit seamlessly into innovative, space-constrained, and ergonomic products using flexible LiPo technology.
Our Custom Battery Assembly and Design Process
Our end-to-end process is designed for transparency, collaboration, and quality, ensuring we deliver a custom battery pack that meets your exact specifications and de-risks your project from start to finish.
Supply Chain Management & Cell Selection:
1.The process begins with quality. We source cells exclusively from audited, Tier-1 global manufacturers and conduct our own rigorous in-house qualification to ensure performance and reliability.
Custom Battery Design:
Our engineers collaborate with your team to define all electrical and mechanical requirements, using advanced 3D modeling to optimize for form factor, thermal management, and structural integrity.
Custom Battery Management System (BMS):
3.We design and integrate a smart BMS to ensure safety, maximize performance, and extend the pack's lifespan. This includes precision fuel gauging, cell balancing, and communication protocols for seamless integration with your device.
Custom Battery Assembly & Manufacturing:
4.In our ISO 9001-certified facilities, our skilled technicians use advanced techniques like laser welding and automated processes to assemble your custom battery packs with the highest level of precision and quality control.
In-House Testing & Certification:
5. Every battery pack undergoes 100% end-of-line functional testing. We also manage the entire global certification process, ensuring your pack meets all necessary standards, including UL, IEC, and UN 38.3, for market access.
Custom Battery Packaging:
6.We design and implement robust packaging solutions to ensure your custom battery packs are protected and arrive safely, ready for integration into your production line.
Why Partner with Large Power?
Management System
Certification
OEM/ODM Services for Custom Battery Packs
Whether you have a complete design ready for production or need a full-service partner to develop a power solution from the ground up, Large Power has you covered. We offer comprehensive OEM (Original Equipment Manufacturer) and ODM (Original Design Manufacturer) services, providing the flexibility to meet your specific business needs and product development strategies.
Markets We Serve
Our expertise as a custom battery pack manufacturer is validated by our success in powering devices for the world’s most demanding industries.
Medical Equipment:
Delivering mission-critical reliability and safety for devices from portable patient monitors to surgical power tools.
Industrial Applications:
Engineering rugged, durable power solutions for industrial IoT, robotics, and backup power systems.
Defense and Aerospace:
Providing high-performance batteries that operate flawlessly in the most extreme and challenging environments.
Consumer Electronics:
Powering the next generation of innovative, high-performance consumer devices with optimized, compact batteries.
What Our Customers Say
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