Wearable & Portable Medical Devices
The modern mainstream medical electronic devices demand ultra-thin, lightweight form factors. They must be worn close to the body for long periods and operate stably at low power for extended periods. Consequently, internal batteries must meet rigorous medical-grade standards regarding thinness, low self-discharge rates, and safety for direct skin contact. But conventional batteries can no longer satisfy these requirements.
Symbo has independently developed medical-grade, ultra-thin, micro-sized lithium-polymer pouch cells. They can be customized for various wearable and portable medical devices. We can customize thicknesses as low as 0.4mm and support custom molding for non-standard shapes, including curved, rounded-corner, notched, and irregular designs.
Our cells feature high energy density, extremely low self-discharge, long cycle life, and medical-grade safety protections, comprehensively meeting the internal power needs of portable medical equipment. They serve as a specialized core power solution for medical wearables and portable diagnostic devices.
Our Symbo medical-grade cells are widely compatible with devices such as micro-CGM patches, insulin pumps, handheld diagnostic tools, physiotherapy and beauty devices, smart OTC hearing aids, medical sensor patches, portable home testing monitors, and health-monitoring smart rings.
Obtenir un devisWhy Do Wearable & Portable Medical Devices Use Specialized Ultra-thin LiPo Batteries?
As portable and wearable medical devices become smaller and thinner, the space available for batteries inside is extremely limited. Traditional lithium batteries are difficult to fit due to their large thickness, rigid shape, and low space utilization. In addition, standard battery cells have problems such as voltage fluctuations, rapid capacity decay, and unstable performance under extreme temperatures. Long-term use can easily lead to safety hazards such as bulging, leakage, and overheating. They cannot meet the needs for stable, long-term monitoring.
Symbo’s ultra-thin lithium polymer battery uses a flexible aluminum-plastic film stacking process, breaking through the size limitations of hard-shell batteries. We support full-size customization, including ultra-thin, curved, irregular, and rounded shapes, to maximize the use of narrow spaces.
Our batteries use high-purity lithium cobalt oxide cathodes and modified graphite anodes, supplemented by high-purity current collectors and high-temperature-resistant medical-grade separators, resulting in extremely low internal resistance. Meanwhile, combined with a multi-protection BMS circuit board, it can achieve stable charge-discharge curves and excellent cycle life. Its structural design significantly reduces the risk of bulging and leakage, and fully meets the safety standards for long-term close-fitting use.
Ultra-thin LiPo batteries are widely compatible with continuous glucose monitors, insulin pumps, OTC hearing aids, medical sensor patches, health monitoring watches, and portable diagnostic devices.
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Our Ultra-thin Lithium Battery Solutions for Medical Devices Features
- Made with medical-grade materials, it features an ultra-thin profile (as low as 0.4mm thick), covering a full range of sizes from micro-sized to large-capacity medical-grade cells.
- It supports custom-designed cells with curved, rounded, notched, C-shaped, and irregular shapes.
- Uses high-purity medical-grade cathode material and precision lamination technology.
- It has an extremely low monthly self-discharge rate and can maintain its charge during long-term storage or intermittent use.
- It adopts a medical-grade, high-temperature-resistant multi-layer heat-sealing process to eliminate the risk of bulging or leakage.
- It offers excellent charge-discharge cycle stability, so customers don’t need frequent battery replacements.
- Five-layer independent BMS protection system.
- Complies with international medical safety standards such as IEC62133 and UN38.3, and supports direct skin contact use.
- Compatible with mainstream medical device charging interfaces, including magnetic base, metal spring contacts, wireless induction, and USB direct charging.
- Adopts professional medical-grade thin-film encapsulation and supports customization of lead length, pad position, protection circuit design, and tab specifications.
Ultra-Thin LiPo Battery Cells for Wearable & Portable Medical Devices
| Model No. | Nominal Capacity (mAh) | Tension nominale (V) | Épaisseur (mm) | Largeur (mm) | Longueur (mm) | Standard Charge Current (mA) | Standard Discharge Current (mA) |
|---|---|---|---|---|---|---|---|
| 251314 | 33 | 3.8 | 2.5 | 13 | 14 | 7 | 6 |
| 350819 | 40 | 3.7 | 3.5 | 8 | 19 | 8 | 8 |
| 351423 | 90 | 3.7 | 3.5 | 14 | 23 | 18 | 18 |
| 552024 | 290 | 3.8 | 5.5 | 20 | 24 | 58 | 58 |
| 682421 | 330 | 3.7 | 6.8 | 24 | 21 | 66 | 66 |
| 602828 | 580 | 3.8 | 6.0 | 28 | 28 | 116 | 116 |
Note: All models support medical-grade customization and are IEC62133 / UN38.3 certified. Furthermore, Symbo can provide relevant export documents for medical devices that comply with ISO13485 standards.
We can also provide custom battery cells with non-standard sizes, curved profiles, and irregular structures.