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Application-Driven Battery Design
Battery packs are developed around real operating conditions, including voltage, capacity, discharge profile, size limits, communication requirements, charging method, and safety standards.
Custom Lithium Battery Manufacturer Since 2002Application-Driven Lithium Battery Solutions by Large Power
We provide one-stop tailor-made lithium-ion battery support, covering cells, battery packs, BMS, power supplies, testing, certification, and scalable manufacturing for specialized projects.
Custom Lithium Battery Manufacturer Since 2002
Application-Driven Lithium Battery Solutions by Large Power
Large Power provides one-stop tailor-made lithium-ion battery support, covering cells, battery packs, BMS, power supplies, testing, certification, and scalable manufacturing for specialized projects.
Company Overview
Custom Lithium Battery Engineering for Specialized Applications
Large Power is a custom lithium-ion battery manufacturer and solution provider based in the Greater Bay Area of China. Since 2002, we have supported demanding projects across medical devices, robotics, security systems, petrochemical equipment, power utilities, telecommunications, UAVs, smart city systems, instrumentation, transportation, and exploration applications.
Our capabilities cover battery cells, battery packs, BMS, power supplies, structural design, electronic circuit design, software design, testing, certification, and scalable production support.
24+Years of battery experience
9,000+Custom project cases
4GWhAnnual pack capacity
Why Customers Choose Large Power
Engineering Support for Demanding Custom Battery Projects
For procurement and technical teams, a custom battery supplier needs more than cells and assembly. Large Power supports application review, pack engineering, testing, certification preparation, and scalable manufacturing.
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R&D and Engineering Support
Engineering teams support requirement review, cell selection, BMS protection, structure design, sample validation, and design adjustments before mass production.
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Quality, Testing, and Certification
In-house testing and quality control help verify electrical performance, protection logic, temperature behavior, safety requirements, and documentation needed for regulated projects.
How We Support Custom Battery Projects
From Requirements to Certified Production
Large Power supports custom battery projects through a structured engineering process, helping procurement and technical teams move from initial requirements to validated, compliant, and scalable battery pack production.
Requirement Review
We clarify voltage, capacity, dimensions, discharge profile, communication needs, certification targets, and operating conditions before starting battery pack development.
Engineering Design
Our team works on cell selection, BMS protection, pack structure, electronic design, charging behavior, software communication, and mechanical integration.
Sample Validation
Prototype samples are reviewed and tested for electrical performance, protection logic, thermal behavior, runtime, safety, and fit with the customer equipment.
Certification & Compliance
We support documentation and test coordination for requirements such as UN38.3, MSDS, IEC, UL, CE, and other market-specific compliance targets when required.
Mass Production Support
After design confirmation, we support production introduction, incoming inspection, process control, outgoing inspection, delivery files, and long-term supply consistency.
How We Support Custom Battery Projects
From Requirements to Certified Production
Large Power supports custom battery projects through a structured engineering process, helping procurement and technical teams move from initial requirements to validated, compliant, and scalable battery pack production.
Requirement Review
We clarify voltage, capacity, dimensions, discharge profile, communication needs, certification targets, and operating conditions before starting battery pack development.
Engineering Design
Our team works on cell selection, BMS protection, pack structure, electronic design, charging behavior, software communication, and mechanical integration.
Sample Validation
Prototype samples are reviewed and tested for electrical performance, protection logic, thermal behavior, runtime, safety, and fit with the customer equipment.
Certification & Compliance
We support documentation and test coordination for requirements such as UN38.3, MSDS, IEC, UL, CE, and other market-specific compliance targets when required.
Mass Production Support
After design confirmation, we support production introduction, incoming inspection, process control, outgoing inspection, delivery files, and long-term supply consistency.
Our Qualifications and Certifications
Compliance Support for Global Battery Projects
Large Power supports quality management, battery safety documentation, transportation files, and project-specific compliance preparation for custom lithium battery applications.
ISO 9001
ISO 14001
ISO 45001
ISO 13485
UN38.3
MSDS
IEC
UL
CE
RoHS
Quality Management
Quality system support for supplier evaluation, process control, inspection records, and long-term project traceability.
Battery Safety Documentation
Support for battery safety files, test reports, transport documents, and technical documentation required by project teams.
Transport & Market Compliance
Compliance preparation for shipment, product access, and market-specific requirements across medical, industrial, robotics, and energy applications.
Manufacturing, R&D and Testing Capabilities
Integrated Support from Engineering to Scalable Production
Large Power combines R&D engineering, in-house testing, quality control, and battery pack manufacturing capacity to support specialized custom lithium battery projects from prototype validation to mass production.
R&D Platform
Engineering support for battery cells, modules, BMS, power supplies, and energy storage solutions.
In-House Testing
Electrical, safety, temperature, vibration, environmental, BMS, and reliability validation.
Manufacturing Capacity
Scalable battery pack production with process control, aging tests, and final quality inspection.
Project Case Experience
Custom battery cases across medical, robotics, security, UAV, industrial, energy, and instrumentation projects.
Company Overview
Large Power is a custom lithium-ion battery manufacturer and solution provider based in the Greater Bay Area of China.
Since 2002, Large Power has focused on tailor-made lithium battery solutions for customers across medical devices, robotics, security systems, petrochemical equipment, power utilities, telecommunications, UAVs, smart city systems, instrumentation, transportation, and exploration and surveying applications.
Our capabilities cover battery cells, battery packs, BMS, power supplies, structural design, electronic circuit design, software design, testing, certification, and mass production support.
Why Customers Choose Large Power
Engineering support, in-house testing, and scalable manufacturing for demanding custom lithium battery projects.
Application-Driven Battery Design
Large Power develops custom lithium battery packs around the actual operating conditions of your equipment, including voltage, capacity, discharge rate, size limits, communication requirements, charging method, and safety standards.
Our engineering team supports procurement and technical teams from requirement review to sample validation, helping reduce redesign risk before mass production.
R&D and Engineering Support
Large Power has 65 R&D engineers supporting cell selection, battery pack structure, BMS design, power supply development, communication interfaces, thermal considerations, and product validation.
For projects in medical, robotics, security, energy, and industrial fields, we help define the technical route before tooling, sampling, and certification work begins.
Quality, Testing, and Certification
Large Power supports global project requirements with ISO 9001, ISO 14001, ISO 45001, ISO 13485, and product certification experience including UN38.3, UL, CB, IEC, FCC, CE, CQC, CCC, BSMI, PSE, KC, RoHS, and REACH.
Our in-house testing center covers safety, electrical performance, climate simulation, vibration, high voltage, BMS, power supply, and environmental reliability tests, helping verify designs before mass production.
How We Support Custom Battery Projects
Requirement Review
We clarify voltage, capacity, dimensions, discharge profile, communication needs, certification targets, and operating conditions before starting custom battery pack development.
Engineering Validation
We validate cell selection, pack structure, BMS protection, charging behavior, temperature performance, and safety requirements through engineering review and in-house testing before mass production.
Our Qualifications and Certifications
Management System
Certification
Manufacturing Site and Capacity
Large Power operates battery pack manufacturing lines for custom lithium battery projects, covering cell matching, pack assembly, BMS integration, aging tests, electrical performance checks, and final quality inspection before shipment.
With an annual battery pack manufacturing capacity of 4GWh, we support prototype builds, pilot runs, and scalable production for medical devices, robotics, security systems, industrial equipment, and other application-driven battery projects. Factory visits are available for customers who need to review production workflow, testing capability, and quality control in person.
R&D Platform — Battery Cells
Large Power works with university research teams and operates the Large Research Institute of Lithium-Ion Battery Engineering. This cell-level R&D support helps evaluate chemistry selection, electrical performance, safety behavior, and application fit before custom battery pack development moves forward.
R&D Platform — Battery Modules
For custom battery modules, Large Power provides industrial design, structural design, process design, electronic circuit design, software support, and experimental validation. The engineering team reviews each application requirement and validates the battery pack design before production.
R&D Platform — Power Supply
With 24 years of experience in custom lithium-ion batteries, Large Power develops charging and power supply solutions matched to the electrical characteristics and safety requirements of each battery system. Testing and validation support can be included for application-specific projects.
R&D Platform — PV Energy Storage
The photovoltaic energy storage platform connects solar modules, smart inverters, energy storage battery systems, and internet-based operation and maintenance tools to support integrated solar-plus-storage applications.
In-House Laboratories
We have established over 30 testing capabilities, including material, electrical performance, climatic adaptability and safety tests.
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 focused on custom lithium battery development for application-driven projects. Over 24 years, the company has expanded from battery pack design and assembly to integrated support for cells, BMS, power supplies, testing, certification, and scalable manufacturing for medical devices, robotics, security systems, industrial equipment, and other specialized applications.
2002.8
2002.8
Large Power was officially established, beginning its long-term focus on custom lithium battery development.
2002.8
2002-2009
2002-2009
National High-Tech Enterprise / Guangdong Provincial Private Technology Enterprise ISO14001 Certified / ISO9001 Certified.
2002-2009
2010-2015
2010-2015
Large Research Institute of Lithium-Ion Battery Engineering was founded.
2010-2015
2016-2020
2016-2020
Focus on customization.
2016-2020
2024
2024
National Technologically Advanced Little Giant Enterprise.
2024
Some of Our Trusted Clients
