Standard models, multi-series/parallel
configurations
2000+ cycle life with high safety performance
Flexible dimensions,
ultra-thin & lightweight
Smart Lithium Battery
Intelligent BMS with SMBus / RS485 / IIC
communication & power display
Charging at –20°C,
discharging at –40°C
Intrinsically safe/ explosion-proof options,
high-temperature short-circuit resistance
Low Temperature Discharging Cells
≥75% capacity retention at
–40°C (0.2C discharge)
Started custom lithium battery
production in 2002
24 years in custom
lithium batteries
2,680+ production
projects completed
Flexible customization, precise matching of multiple scenarios, efficient and stable operation of equipment
Reliable medical-grade batteries designed for ISO13485 compliance, long life, and stable performance for critical healthcare devices.
Reliable medical-grade batteries designed for ISO13485 compliance, long life, and stable performance for critical healthcare devices.
Reliable medical-grade batteries designed for ISO13485 compliance, long life, and stable performance for critical healthcare devices.
Reliable medical-grade batteries designed for ISO13485 compliance, long life, and stable performance for critical healthcare devices.
Reliable medical-grade batteries designed for ISO13485 compliance, long life, and stable performance for critical healthcare devices.
Reliable medical-grade batteries designed for ISO13485 compliance, long life, and stable performance for critical healthcare devices.
Covering electrical performance/structure/thermal management/BMS/safety,
accurately adapting to equipment requirements
We tailor cell chemistry, voltage platforms, discharge rates, and cycle life to deliver optimal electrical performance for each application.
We customize dimensions weight, housing materials, and internal layout to ensure a robust and reliable structural design.
We optimize thermal behavior through thermal simulation, heat-dissipation structures, and material selection for stable performance in extreme temperatures.
We provide customized BMS development with tailored protection strategies, SOC algorithms, data acquisition, and multi-protocol communication.
We implement comprehensive safety engineering-electrical, structural, thermal, and explosion-proof-to meet certification standards and extreme operating conditions.
We offer 15+ specialized technical disciplines-including electronics, structural engineering, process engineering, industrial design, testing, and quality management-to deliver one-stop solutions.
We possess full-range testing capabilities from safety to electrical performance, with a total of 109 test items available.
Over 68 million custom lithium battery packs delivered.
Custom Lithium Battery Whitepaper
- Parameter Selection
- Certification Process
- Cost Optimization
- Case Studies
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Latest News & Events
LARGE Achieves ISO 13485 Certification, Strengthening Safety Foundations for High-End Medical Devices
LARGE has won the second prize of China Nonferrous Metal Industry Science and Technology Award
Large has won the second prize of China Nonferrous Metal Industry Science and Technology Award
LARGE has won the title of State-level technologically advanced ‘little giant’ enterprises.
Large has won the title of State-level technologically advanced ‘little giant’ enterprises.
LARGE Achieves ISO 13485 Certification, Strengthening Safety Foundations for High-End Medical Devices
LARGE has won the title of State-level technologically advanced ‘little giant’ enterprises.
Large has won the title of State-level technologically advanced 'little giant' enterprises.
LARGE Explosion-proof Low-temperature Charging Power Supply Was Awarded Explosion-proof Certificate
In the first month of the New Year, Dongguan Large Electronics Co., LTD. comes good news. Explosion-proof low-temperature power supply was awarded "Explosion-proof certificate"
The Ultimate Guide to Medical Battery Design in 2026
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You Should Know the Main Difference Between UL2054 and UL1642.
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How Low Temperatures Affect Lithium Battery Performance
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Are Lithium Batteries Safe When Exposed to Water
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Custom Lithium Battery Solution
Contact us now for your custom
lithium battery solution.