Large Power

Custom Solutions for Your Business

Leader in custom lithium-ion batteries

Company Overview

Large Power is a custom lithium battery manufacturer established in 2002, headquartered in the Greater Bay Area of China. Specializing in tailored solutions, the company designs and produces lithium battery cells, packs and power supplies for diverse industries, including medical equipment, robotics, rail transit, emergency systems, and consumer electronics.

Our Values

Loyal to clients, quality as foundation, contributors first.

Client-Oriented Custom     Battery Solutions

At Large Power, we redefine custom battery manufacturing with a client-first philosophy. Every solution begins with your unique needs—whether it’s a medical device requiring ultra-low self-discharge or an AUV demanding pressure-resistant cells.
Our collaborative approach ensures seamless integration, from initial design to final deployment, while prioritizing your operational goals and budget. Partner with us for bespoke power systems designed to elevate your project’s performance.

Technology-Driven Innovation

Large Power leverages cutting-edge R&D to stay at the forefront as a technology-driven custom battery manufacturer. From advanced LiFePO4 chemistries to solid-state breakthroughs, we push boundaries in energy storage.
Our proprietary Battery Management Systems (BMS) with AI-driven diagnostics and smart thermal controls ensure peak efficiency, even in extreme environments. Trust us to future-proof your applications with scalable and sustainable power solutions.

Quality-Assured Reliability

Quality isn’t just a standard—it’s our promise. As an ISO 9001, ISO 13485 and UL-certified custom battery manufacturer, Large Power subjects every cell to 30+ validation tests, including thermal cycling, crush resistance
and deep discharge simulations.
Our zero-defect ethos ensures your batteries exceed safety, longevity and performance benchmarks. Explore how our quality-assured designs power industries where failure isn’t an option.

Our Culture as Custom Battery Manufacturer

Client Focus

We prioritize clients’ needs, delivering tailored solutions and ensuring seamless integration from design to deployment.

Innovation

We drive innovation through cutting-edge R&D, pushing boundaries in energy storage with advanced chemistries and smart technologies.

Our Qualifications and Certifications

Enterprise Qualifications

  • ISO 9001:2015 Quality Management System
  • ISO 14001:2015 Environmental Management System
  • ISO 45001:2018 Management System
  • GB/T 45001-2020 Occupational Health and Safety Management System
  • GB/T 29490-2013 Intellectual Property Management System
  • GB/T 23001-2017 Information Technology and Industrialization Integration Management System

Product Certifications

  • UL
  • CB
  • FCC
  • CE
  • CQC
  • CCC
  • BSMI
  • PSE
  • KC
  • UN38.3
  • ROHS
  • REACH
  • BIS
  • EN
  • BSMI
  • TISI and more

Manufacturing Site and Capacity

Our state-of-the-art manufacturing facilities are equipped with the latest technology and machinery to produce high-quality lithium batteries. We maintain strict quality control throughout the production process to ensure our batteries meet the highest standards of performance, safety and reliability.
With an annual production capacity of 4GWh for tailor-made battery solution, we welcome factory tours from clients and partners worldwide. If you’d like to see our manufacturing process firsthand and learn more about our capabilities, please contact us to schedule a visit.

R&D Platform — Battery Cells

We collaborate with multiple universities and jointly operate the Large Research Institute of Lithium-Ion Battery Engineering (Large Research Institute).With the deep integration of industry and academia as our innovation driver,
we strive to meet clients’ unique needs and deliver distinctive and specialized value.

R&D Platform — Battery Modules

Focusing on client needs, Large Power provides a one-stop solution, offering comprehensive technical services, including industrial design, structural design, process design, electronic circuit design and software design.Our professional engineering team will take care of every design needs and conduct rigorous experimental validation for custom battery designs.

R&D Platform — Power Supply

With 23 years of experience in custom lithium-ion batteries, Large Power designs and develops professional, high-safety and high-reliability power supplies tailored to the unique chemical characteristics of each end customer’s battery system.

Large Power offers power supply solutions, in-depth tailor-made development and rigorous testing and validation services.

      R&D Platform —       PV Energy Storage

Engineering and Technology Center for Photovoltaic Energy StorageConnecting solar cell modules, smart photovoltaic inverters, energy storage battery systems and Internet-based operation and maintenance systems to build a complementary photovoltaic and energy storage power generation system within an energy internet framework.

In-House Laboratories

We have established over 30 testing capabilities, including material, electrical performance, climatic adaptability and safety tests.

  • large power in house lab
  • large power in house lab
  • large power in house lab
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Developed 9,000+ Cases

As a leading custom battery manufacturer, we have developed over 9,000 cases covering over 20 industries with extensive experience to meet your specific needs.

Our History

Founded in 2002, Large Power has a rich history of providing innovative battery solutions. From our humble beginnings to becoming a leading custom lithium battery manufacturer, we have consistently strived for excellence.

Dongguan Large Electronics Co., Ltd (Large Power) was officially established.
2002.8
National High-Tech Enterprise / Guangdong Provincial Private Technology Enterprise ISO14001 Certified / ISO9001 Certified.
2002-2009
Large Research Institute of Lithium-Ion Battery Engineering was founded.
2010-2015
Focus on customization.
2016-2020
National Technologically Advanced Little Giant Enterprise.
2024

Some of Our Trusted Clients

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