Over-the-counter (OTC) hearing aids are transforming the hearing healthcare industry by making hearing assistance more affordable and accessible. Modern hearing aids integrate advanced DSP chips, Bluetooth connectivity, AI sound processing, wireless charging, and compact ergonomic designs that require reliable and miniature battery solutions.
Compared with traditional disposable hearing aid batteries, rechargeable lithium batteries offer longer service life, improved convenience, and a more sustainable user experience. As hearing aid manufacturers continue to reduce device size while extending operating time, battery energy density, safety, and customization become increasingly important. LithoTop provides customized lithium battery solutions for OTC hearing aids, rechargeable hearing devices, and smart hearing electronics, helping OEM and ODM manufacturers develop smaller, lighter, and longer-lasting products.Challenges of Hearing Aid Battery Design
Extremely Limited Installation Space
Hearing aids are among the smallest wearable electronic devices available today. Battery systems must provide maximum energy within an extremely compact footprint.
- Ultra-small dimensions
- Lightweight construction
- Maximum energy density
- Flexible battery customization
Long Daily Operating Time
Users expect hearing aids to operate throughout the day without frequent charging or battery replacement.
- Long runtime
- Stable voltage output
- Low self-discharge
- Fast charging capability
Comfortable Wearing Experience
Battery weight and size directly affect wearing comfort, especially for hearing aids worn continuously for long periods.
- Lightweight batteries
- Compact battery structure
- Optimized internal space utilization
Medical Safety Requirements
Since hearing aids are worn close to the body, battery safety, charging reliability, and production consistency are essential.
- Grade-A lithium cells
- Stable charging performance
- Overcharge protection
- Temperature protection
- 100% quality inspection
LithoTop Battery Solutions for OTC Hearing Aids
Ultra-Small LiPo Batteries
- Ultra-compact dimensions
- High energy density
- Long operating time
- Lightweight construction
Ultra-Thin LiPo Batteries
- Thickness from 1.0mm
- Slim profile
- Stable discharge performance
- Custom dimensions available
Rechargeable Button Cell Batteries
- Compact design
- Stable output
- Long cycle life
- Rechargeable solution
Custom Medical LiPo Batteries
- OEM battery customization
- PCM integration
- Custom connectors
- Medical-grade production support
Hearing Aid Battery Features
- Ultra-small dimensions
- High energy density
- Lightweight design
- Stable voltage output
- Long operating time
- Fast charging support
- Medical-grade reliability
- Long cycle life
- Custom battery design
- OEM & ODM manufacturing
Typical Battery Specifications for OTC Hearing Aids
| Parameter | Typical Range |
|---|---|
| Voltage | 3.7V – 3.85V |
| Capacity | 15mAh – 150mAh |
| Battery Type | LiPo / Rechargeable Button Cell |
| Shape | Ultra-Small / Ultra-Thin / Custom |
| Thickness | 1.0mm – 5.0mm |
| Protection | PCM Optional |
| Cycle Life | 300–500 Cycles |
| Charging | Wired / Wireless Charging |
| Certifications | UN38.3 / IEC62133 / CE / RoHS |
Why Hearing Aid Manufacturers Choose LithoTop
- Ultra-small battery expertise
- Ultra-thin battery manufacturing
- Medical-grade lithium cells
- OEM & ODM customization
- In-house PCM development
- Fast sample development
- 100% inspection before shipment
- Global certification support
Please feel free to contact us for more information and customized battery solutions for your project.
Ultra-thin LiPo batteries are designed for slim hearing aid structures and miniature medical audio devices that require thin profiles and easy integration.
- Thickness from 1.0mm
- Lightweight design
- Stable voltage output
- Easy integration into compact structures
- Suitable for ITE, CIC and rechargeable hearing devices
Ultra thin Hearing Aids Batteries List
| Model | Voltage(V) | Capacity | Cell size(T*W*L)mm |
|---|---|---|---|
| 042040 | 3.7 | 8 | 0.4*20*40 |
| 042255 | 3.7 | 24 | 0.4*22*55 |
| 062550 | 3.7 | 40 | 0.6*25*50 |
| 072738 | 3.8 | 38 | 0.7*27*38 |
| 084545 | 3.7 | 110 | 0.8*45*45 |
| 012323 | 3.7 | 30 | 1*23*23 |
| 013040 | 3.7 | 80 | 1*30*40 |
| 013050 | 3.7 | 100 | 1*30*50 |
| 014348 | 3.7 | 130 | 1*43*48 |
| 014460 | 3.7 | 180 | 1*44*60 |
| 015253 | 3.7 | 180 | 1*52*53 |
| 015362 | 3.7 | 250 | 1*53*62 |
| 123030 | 3.7 | 80 | 1.2*30*30 |
| 126070 | 3.7 | 300 | 1.2*60*70 |
| 132939 | 3.7 | 90 | 1.3*29*39 |
| 153040 | 3.7 | 110 | 1.5*30*40 |
| 155075 | 3.7 | 350 | 1.5*50*75 |
| 155776 | 3.7 | 480 | 1.5*57*76 |
| 163050 | 3.7 | 160 | 1.6*30*50 |
| 191622 | 3.7 | 35 | 1.9*16*22 |
Our LIR rechargeable coin cell batteries feature high energy density, low self-discharge, and long cycle life, helping devices achieve reliable and long-lasting power support. Manufactured with high-quality materials and strict quality control, LithoTop button batteries provide safe and stable charging and discharging performance.
LithoTop supports customized battery solutions including tabs, connectors, wire assembly, capacity selection, and protection circuits according to different application requirements.
- Stable 3.6V rechargeable power supply
- Compact and lightweight button cell design
- High energy density and low self-discharge
- Long cycle life and reliable performance
- Safe charging and stable discharge characteristics
- Optional tabs, wires, and connector customization
- Environmentally friendly and rechargeable design
- Suitable for compact and low-power devices
Button Cell Batteries List
| Model | Voltage(V) | Capacity(mAh) | Cell Dimension(D*T)mm | Shape |
|---|---|---|---|---|
| LIR1054 | 3.6 | 40 | 10*5.4 | Round |
| LIR1254 | 3.6 | 40 | 12*5.4 | Round |
| LIR2016 | 3.6 | 18 | 20*1.6 | Round |
| LIR2025 | 3.6 | 20 | 20*2.5 | Round |
| LIR2032 | 3.6 | 40 | 20*3.2 | Round |
| LIR2430 | 3.6 | 60 | 24*3 | Round |
| LIR2450 | 3.6 | 120 | 24*5 | Round |
| LIR2477 | 3.6 | 200 | 24*7.7 | Round |
| LIR3048 | 3.6 | 280 | 30*4.8 | Round |
Ultra-small LiPo batteries are suitable for compact rechargeable hearing aids where limited installation space, lightweight design, and stable power output are critical.
- Ultra-compact size
- High energy density
- Lightweight construction
- Long cycle life
- Suitable for BTE, RIC and OTC hearing devices
Ultra Small Hearing Aids Batteries List
| Model | Voltage(V) | Capacity(mAh) | Cell size(T*W*L)mm |
|---|---|---|---|
| 200815 | 3.7 | 9 | 2*8*15 |
| 201030 | 3.7 | 50 | 2*10*30 |
| 281024 | 3.7 | 40 | 2.8*10*24 |
| 300810 | 3.7 | 8 | 3*8*10 |
| 300812 | 3.7 | 15 | 3*8*12 |
| 300816 | 3.7 | 20 | 3*8*16 |
| 300822 | 3.7 | 32 | 3*8*22 |
| 300830 | 3.7 | 55 | 3*8*30 |
| 300927 | 3.7 | 55 | 3*9*27 |
| 301010 | 3.7 | 20 | 3*10*10 |
| 301012 | 3.7 | 25 | 3*10*12 |
| 301020 | 3.7 | 40 | 3*10*20 |
| 301030 | 3.7 | 70 | 3*10*30 |
| 350725 | 3.7 | 40 | 3.5*7*25 |
| 350830 | 3.7 | 60 | 3.5*8*30 |
| 350835 | 3.7 | 80 | 3.5*8*35 |
| 351015 | 3.7 | 30 | 3.5*10*15 |
| 351020 | 3.7 | 55 | 3.5*10*20 |
| 400810 | 3.7 | 15 | 4*8*10 |
| 400830 | 3.7 | 80 | 4*8*30 |
| 400835 | 3.7 | 100 | 4*8*35 |
| 400920 | 3.7 | 60 | 4*9*20 |
| 400930 | 3.7 | 90 | 4*9*30 |
| 400940 | 3.7 | 120 | 4*9*40 |
| 401010 | 3.7 | 25 | 4*10*10 |
| 401012 | 3.7 | 30 | 4*10*12 |
| 401015 | 3.7 | 40 | 4*10*15 |
| 401020 | 3.7 | 55 | 4*10*20 |
| 401025 | 3.7 | 75 | 4*10*25 |
| 401030 | 3.7 | 90 | 4*10*30 |
| 401035 | 3.7 | 110 | 4*10*35 |
| 401050 | 3.7 | 160 | 4*10*50 |
| 401130 | 3.7 | 110 | 4*11*30 |
| 500830 | 3.7 | 110 | 5*8*30 |
| 501010 | 3.7 | 35 | 5*10*10 |
| 501015 | 3.7 | 50 | 5*10*15 |
| 501030 | 3.7 | 120 | 5*10*30 |
| 501035 | 3.7 | 130 | 5*10*35 |
| 501040 | 3.7 | 180 | 5*10*40 |
| 501130 | 3.7 | 150 | 5*11*30 |
| 501145 | 3.7 | 250 | 5*11*45 |
| 601015 | 3.7 | 60 | 6*10*15 |
| 601030 | 3.7 | 150 | 6*10*30 |
| 601040 | 3.7 | 200 | 6*10*40 |
| 601045 | 3.7 | 260 | 6*10*45 |
FAQ
What battery is used in OTC hearing aids?
Most modern OTC hearing aids use rechargeable lithium polymer batteries or rechargeable button cell batteries due to their compact size, high energy density, and long service life.
Can LithoTop customize batteries for hearing aids?
Yes. LithoTop provides custom battery solutions including voltage, capacity, dimensions, wire length, connectors, PCM protection, and battery packaging for hearing aid manufacturers.
Are rechargeable LiPo batteries better than disposable hearing aid batteries?
Rechargeable LiPo batteries provide longer service life, improved user convenience, reduced maintenance costs, and support environmentally friendly product designs.
Does LithoTop support wireless charging battery solutions?
Yes. Our engineering team can develop customized rechargeable battery solutions compatible with wireless charging systems used in modern OTC hearing aids.
Want a different Wearable batteries? Contact us now for your special needs.
