Celxpert

OEM/ODM customization services for the battery industry

Custom Battery Service

Large Battery is a professional custom battery manufacturer with over 23 years of industry experience, specializing in the design, development, and production of advanced lithium battery systems for B2B clients across the globe.

We collaborate with companies that demand high-performance, application-specific batteries, serving industries such as medical devicesrobotics,security, and infrastructure. Our engineering team delivers tailor-made battery packs that meet strict technical, safety, and environmental standards—ensuring performance and reliability in every scenario.

More than just cutting-edge battery technology, we offer end-to-end customization services to help your product stand out in a competitive market. From custom casing design and brand labeling to packaging and visual presentation, we provide complete, tailored solutions that align with your product vision and branding strategy.

OEM Battery Pain Points & Our Solutions

We understand the real-world challenges businesses face when sourcing OEM battery solutions—whether it’s performance instability, delayed timelines, or lack of customization. At Large Battery, solving these pain points isn’t an add-on, it’s the core of what we do.
With 23 years of industry experience, we’ve helped clients across sectors turn complex battery requirements into reliable, market-ready products

Pain Point: Delays in communication and unclear technical coordination slow down project timelines.


Our Solution: Our experienced engineering and sales teams provide fast, responsive, and professional one-on-one support, ensuring efficient communication throughout your project lifecycle.

Pain Point: Standard batteries often fail to meet specific size, voltage, or performance requirements.


Our Solution: We offer fully customized battery packs, tailored to your exact application—whether it’s high discharge rate, ultra-thin design, or specific form factor.

Looking for a battery partner who understands your challenges and delivers beyond expectations?

Custom Battery Solutions

Versatile power for specialized applications

At Large Battery, we provide custom battery solutions designed for diverse industries. Whether it’s medical devices requiring high safety, robotics needing compact, high-discharge power, or security systems relying on backup performance—we build batteries to fit your needs.

Our solutions also serve infrastructureconsumer electronics, and industrial equipment, with options tailored for unique sizesvoltagesenvironments, and branding. Whatever your application, we ensure reliable, precise, and fully integrated energy support.

Medical

Reliable, certified batteries for life-critical medical equipment.

Robotics

High-discharge, compact power for mobile and industrial robots.

Medical

Reliable, certified batteries for life-critical medical equipment.

Medical

Reliable, certified batteries for life-critical medical equipment.

Frequently Asked Questions (FAQ)

In custom battery pack design, precise voltage, capacity, and current requirements must be met to ensure both performance and safety. Different applications may require complex configurations or specific voltage outputs.
An integrated Battery Management System (BMS) provides real-time monitoring, overcharge/over-discharge protection, thermal management, and cell balancing.
At the same time, enhanced thermal design and mechanical structure are required to withstand harsh environments such as extreme temperatures, vibration, and shock.

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If you have any questions, please do not hesitate to contact us.