5008, Longxing commercial building,Shenzhen City, China +0086-17620552786 info@coincell.cn

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Coincell Launches Laser Sealing Structure Battery for Hearing Aids

Revolutionizing Hearing Aid Power with Advanced Laser Sealing Technology

 

Introduction: A New Era in Hearing Aid Battery Technology

In the rapidly evolving world of hearing aid technology, power efficiency and reliability are paramount. Today, Coincell is proud to announce the launch of our groundbreaking M7840X laser sealing structure battery, specifically designed for hearing aid applications. This innovative product represents a significant leap forward from traditional crimp sealing technology, delivering superior performance in the same compact form factor.

Understanding the Technology: Traditional vs. Laser Sealing

 

 

Traditional Crimp Sealing Structure (M7840S4)

The conventional M7840S4 battery utilizes crimp sealing technology, where the battery case is mechanically sealed by folding and crimping the edges. While this method has served the industry well, it inherently requires additional space for the sealing mechanism, limiting the volume available for active materials.

Revolutionary Laser Sealing Structure (M7840X)

The M7840X employs cutting-edge laser sealing technology, which creates a hermetic seal through precision laser welding. This advanced manufacturing process eliminates the need for mechanical crimping, maximizing the internal volume for energy-storing materials. The result? More power in the same size.

Performance Comparison: The M7840X Advantage

 

Side-by-Side Specifications

 

Key Advantages of the M7840X

 

1. 15.5% Higher Energy Density ⚡

The M7840X delivers 0.097 Wh compared to the M7840S4's 0.084 Wh—a substantial 15.5% increase in energy storage. This means longer runtime for hearing aid users, reducing the frequency of charging and enhancing user convenience.

2. 11% Greater Capacity 🔋

With a minimum capacity of 25.0 mAh (versus 22.5 mAh), the M7840X provides more power reserves, ensuring consistent performance throughout the day, even under demanding usage conditions.

3. Double the Charge/Discharge Rate ⚡

The M7840X supports 1.0C charging and discharging, twice the rate of the traditional M7840S4. This translates to:

  • Faster charging times - Less waiting, more using
  • Higher power output - Better performance during peak demand
  • Improved responsiveness - Optimal performance for advanced hearing aid features
  • 4. Higher Operating Voltage 🔌

    At 3.85V nominal voltage (compared to 3.73V), the M7840X provides more stable power delivery, which is crucial for modern digital hearing aids with sophisticated signal processing requirements.

    5. Advanced LCO Chemistry 🧪

    The M7840X utilizes Lithium Cobalt Oxide (LCO) cathode material combined with graphite anode, offering superior energy density and voltage characteristics compared to the NCM chemistry in traditional batteries.

    6. Same Compact Size 📦

    Despite all these improvements, the M7840X maintains the exact same dimensions (Ø7.8 × 4.0 mm) as the M7840S4, ensuring seamless integration into existing hearing aid designs without any modifications.

     

     

    Technical Specifications at a Glance

     

    M7840X Laser Sealing Battery

  • Chemistry: LCO + Graphite
  • Dimensions: Ø7.8 ± 0.1 mm × 4.0 ± 0.1 mm
  • Nominal Voltage: 3.85 V
  • Capacity: 25.0 - 26.0 mAh @ 0.2C
  • Discharge Cut-off: 3.0 V
  • Max Charge/Discharge Current: 1.0C
  • Discharge Cut-off: 3.0 V
  • Cycle Life: ≥1200 cycles @ 0.5C/0.5C
  • Operating Temperature:
  • o Charging: 0°C ~ 45°C

    o Discharging: -20°C ~ 60°C

     

     

    Real-World Benefits for Hearing Aid Users

     

    Extended Daily Use

    The 15.5% increase in energy density means users can enjoy longer periods between charges, providing peace of mind throughout busy days.

     

    Faster Charging

    With 2x faster charging capability, users spend less time tethered to charging stations and more time engaging with the world around them.

     

    Enhanced Performance

    The higher voltage and discharge rate support advanced hearing aid features such as Bluetooth connectivity, active noise cancellation, and sophisticated sound processing algorithms.

     

    Reliable in All Conditions

    With an operating temperature range from -20°C to 60°C, the M7840X performs reliably in diverse climates and environments.

     

    Manufacturing Excellence and Quality Assurance

     

    The M7840X is manufactured using state-of-the-art laser sealing technology, which offers:

  • Superior hermetic sealing - Enhanced protection against moisture and contaminants
  • Consistent quality - Precision laser welding ensures uniform sealing across all units
  • Enhanced safety - Reduced risk of seal failure and improved long-term reliability
  • Low technical risk - Built on mature, proven manufacturing processes
  •  

    Conclusion: The Future of Hearing Aid Power

     

    The Coincell M7840X laser sealing battery represents a significant advancement in hearing aid power technology. By combining innovative laser sealing manufacturing with optimized LCO chemistry, we've achieved remarkable performance improvements while maintaining the compact form factor essential for modern hearing aids.

     

    Key Takeaways:

     

  • ✅ 15.5% more energy in the same size
  • ✅ 11% greater capacity for extended use
  • ✅ 2x faster charging and discharging
  • ✅ Higher voltage for better performance
  • ✅ Advanced laser sealing technology
  • ✅ Drop-in replacement for existing designs
  •  

    For hearing aid manufacturers seeking to enhance their products' performance and for users demanding longer runtime and faster charging, the M7840X is the clear choice. Welcome to the future of hearing aid batteries—welcome to the power of laser sealing technology.

     

    Contact Us

     

    For technical specifications, samples, or partnership inquiries, please contact Coincell's sales and engineering team.

    Confidential with NDA protected

     

    About Coincell

     

    Coincell is a leading innovator in micro battery technology, specializing in high-performance power solutions for medical devices, wearables, and IoT applications. Our commitment to research and development drives continuous advancement in battery technology, delivering superior products that power the devices that improve lives.

    Get In Touch

    5008, Longxing commercial building, Huarong Road No. 58-61, Shenzhen

    info@coincell.cn

    +0086-17620552786

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