medical lithium battery

Custom Lithium Batery Pack

22 Years Manufacturer of Lithium Battery Pack

Custom Lithium Batery Design

Battery Cell Selection + PCM & BMS + Structure Design + Chargers

We provide full turn-key services in product development, production of batteries, chargers, and batteries with embedded BMS control.
  • Cell Selection and Cell Quality Detection

  • Design of shape and internal structure

  • Electrical performance design:protection function, accurate power display, host communication, certification, battery set-making, charging

  • Charger design:External or built-in charger

  • Mid-term overall re-evaluation

  • First sample

  • Basic electrical performance test, and test under different environmental conditions


Battery Application

Medical equipment, security monitoring, emergency fire fighting, exploration and mapping, 5G Internet of Things, handheld devices,
instruments, outdoor recreation, outdoor photography, smart home, consumer electronics, etc.

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LARGE's Comprehensive Strength

Dongguan Large Electronics Co., Ltd. is founded in 2002.It is a state-level high-tech enterprise that provides customized solutions and products of
special lithium battery systems with maximum reliability and maximum safety for global users.

The company's low temperature batteries, smart batteries, 18650 batteries, polymer batteries and lithium iron phosphate batteries are widely used in
special equipment, medical equipment, security communication, instrumentation, consumer electronics,etc.

The company has passed ISO9001, ISO14001, OHSAS18000, BSCI, MFI certification.

  • Technical Team
    Technical Team
    • 6 professors and experts

    • 60+ engineers

    • Include electronics, structure, process,industrial design, quality,test, certification and other professional and technical categories

  • Production and manufacturing
    Production and Manufacturing
    • Cell annual capacity: 1.5G WH

    • PACK annual capacity: 20 million units

    • Multi-model, multi-batch, customized PACK

  • Safety & Reliability
    Safety & Reliability
    • Meet CE, CB, UL, UN38.3, MSDS etc.

    • The product quality traceability system

    • Provides accurate data information for after-sales service.

13+Professional Laboratory

Large Has set up professional laboratories for cell, battery, power supply, power tools and photovoltaic energy storage.
They can independently complete the whole project testing with certification of raw/auxiliary materials, parts and battery modules, and the testing
technology meets international standards.

LARGE's Core Technology

  • Low Temperature Battery

    Ternary,Lithium Iron Phosphate System

    Low Temperature Charging

    -20℃ 0.5CCharging, Charging and Discharging Cycle≥300Cycles
    -40℃ 0.2CCharging, Charging and Discharging Cycle≥300Cycles

    Low Temperature Discharging

    -40℃ 5C Discharge Capacity≥80%
    -50℃ 0.5C Discharge Capacity≥75%

    Low Temperature Acupuncture

    Pass acupuncture,Shooting Test

  • Explosion-proof Battery


    Modified Ternary Chemical System 190~200Wh/kg High-energy Density
    Ex ib IIB T1~T4 Explosion-proof Criteria
    Ex ia IIA T1~T4 Explosion-proof Criteria
    Safety Test of Prick and Heavy Object Impact

  • High-energy Density

    Mass Energy Density 285wh/kg
    Volume Energy Density700wh/l

    High Rate

    100C Continuous Discharge
    The temperature rise should be controlled within 40℃.

    High Temperature

    The high temperature at 80℃ circulates continuously for 200 cycles Store at 85℃ for 48 hours.

    High Voltage

    Maximum Voltage 4.45V,
    Platform Voltage 3.85V

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