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.
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.
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.
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.
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.
The M7840X supports 1.0C charging and discharging, twice the rate of the traditional M7840S4. This translates to:
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.
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.
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.
o Charging: 0°C ~ 45°C
o Discharging: -20°C ~ 60°C
The 15.5% increase in energy density means users can enjoy longer periods between charges, providing peace of mind throughout busy days.
With 2x faster charging capability, users spend less time tethered to charging stations and more time engaging with the world around them.
The higher voltage and discharge rate support advanced hearing aid features such as Bluetooth connectivity, active noise cancellation, and sophisticated sound processing algorithms.
With an operating temperature range from -20°C to 60°C, the M7840X performs reliably in diverse climates and environments.
The M7840X is manufactured using state-of-the-art laser sealing technology, which offers:
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.
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.
For technical specifications, samples, or partnership inquiries, please contact Coincell's sales and engineering team.
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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.