Hearing Aid Battery Requirements
- Long Battery Life
Hearing aid batteries must deliver extended runtimes despite the device’s compact size and high power demands from features like Bluetooth and wireless connectivity. - Ease of Use
Batteries should minimize the need for frequent replacements or recharges. For elderly users or those with limited dexterity, designs must support simple handling and reliable placement. - Stable and Safe Performance
A consistent voltage output is essential to ensure uninterrupted hearing aid function. Batteries also require built-in protection against overcharge, over-discharge, and short circuits to safeguard users.
- Compact and Customizable Design
Given the tight space inside or behind the ear, batteries must be ultra-compact, lightweight, and available in customized shapes and sizes to fit seamlessly into different hearing aid models. - User Comfort
Batteries should remain cool and lightweight during prolonged wear, ensuring comfort without adding noticeable pressure to the ear. - Eco-Friendly and Rechargeable Options
With growing concerns about single-use zinc-air batteries, there is increasing demand for rechargeable and environmentally friendly solutions, such as advanced lithium polymer (LiPo) batteries.
Zinc-Air Button Cell vs Rechargeable Lithium-Ion for Hearing Aids
Zinc-Air Button Cells are the traditional choice for hearing aids. They come in standard sizes like 10 (yellow), 312 (brown), 13 (orange), and 675 (blue), with a voltage of 1.4V. These batteries activate when exposed to air, are lightweight, and have a long shelf life. They typically last 3–14 days depending on size and usage, and are easy to replace. However, they are disposable, which creates more waste over time.
Rechargeable Lithium-Ion batteries are becoming increasingly popular in modern hearing aids, especially behind-the-ear models. They usually have a voltage of 3.6–3.7V and are built into the device. They provide the convenience of recharging daily without frequent battery replacement and are more eco-friendly. Their main trade-off is that they need to be charged every day, unlike zinc-air batteries that can last a week or more.
Advantages of Using Rechargeable Lipo Batteries In Hearing Aids
Extended Battery Life: Lithium polymer (LiPo) batteries provide higher energy density than traditional zinc-air or nickel-based options, enabling longer usage time between charges.
Compact and Flexible Design: LiPo batteries can be engineered into ultra-thin, lightweight, and custom shapes, making them ideal for the limited space inside or behind the ear.
Convenience for Users: Rechargeable solutions eliminate the need for frequent battery replacements, offering a seamless experience for elderly users and those with limited dexterity.
Stable and Reliable Performance: LiPo batteries deliver consistent voltage output, ensuring clear and uninterrupted hearing aid function even with advanced features like Bluetooth connectivity.
Safety Features: Built-in protection against overcharge, over-discharge, and short circuits ensures safe, reliable daily use.
Eco-Friendly Choice: Unlike disposable zinc-air batteries, rechargeable LiPo batteries reduce environmental waste and support sustainability goals.
Comfort for Long-Term Wear: Their lightweight structure and low heat generation allow comfortable all-day use without adding pressure to the ear.
LanDazzle Battery Solutions for Hearing Aids
LanDazzle offers a wide range of shaped LiPo batteries designed to perfectly fit the unique contours of hearing aids. Our custom-shaped liPo batteries can be made as thin as 0.6mm and as narrow as 5mm. Available shapes include curved, round, L-shaped, C-shaped, and D-shaped, among others.
LanDazzle shaped LiPo batteries deliver excellent performance, with a long cycle life of over 1000 cycles, operating safely across a wide temperature range of -40°C to 80°C. They also support fast charging up to 5C, ensuring both high efficiency and reliable power for compact and advanced smart devices.
Ready to Power Your Hearing Aid with a Better Battery?
At LanDazzle, we specialize in custom LiPo batteries for modern hearing aids, offering ultra-thin designs, integrated safety and temperature protection, low-temperature performance options, and customization to meet ISO 13485 and IEC 62133 medical standards.
Let’s talk about your project.
Contact us today to get a free consultation and explore how our custom battery solutions can bring your devices to life.
Email: info@landazzle.com
Whatsapp: +8618938252128