The Ultimate Guide to Hearing Aid Batteries Size 312: Everything You Need to Know
Hearing aids are vital devices that significantly improve the quality of life for millions of people with hearing loss. Central to their operation are reliable, high-quality batteries. Among these, size 312 batteries are the most commonly used in many hearing aids, especially in in-the-ear (ITE) and some behind-the-ear (BTE) devices. Selecting the right battery ensures optimal performance, longer lifespan, and peace of mind. This comprehensive guide aims to provide you with all the information you need to make an informed decision.
Quick Comparison Table: Types and Applications of Hearing Aid Batteries Size 312
| Feature | Zinc-Air Batteries (Size 312) | Rechargeable Batteries | Silver-Oxide Batteries | Other Variants |
|---|---|---|---|---|
| Primary Power Source | Zinc-air chemical reaction with air | Lithium-ion, Silver-Zinc | Silver-oxide chemical reaction | Mercury-free options |
| Typical Usage | Most disposable hearing aids | Modern rechargeable hearing aids | Some older models | Specialized or custom hearing aids |
| Voltage | 1.4V | 1.2V – 1.4V | 1.4V | Varies |
| Lifespan (per battery) | 3-7 days (depending on usage) | 12-24 hours (per charge) | Similar to zinc-air | N/A |
| Cost | Low (per battery) | Higher upfront, lower long-term | Similar to zinc-air | Varies |
| Environmental Impact | Mercury-free options available | Reusable, eco-friendly | Mercury-free options available | Eco-friendly variants |
| Shelf Life | 2-3 years (unopened) | N/A (rechargeable) | 2-3 years (unopened) | N/A |
| Common Brands | Duracell, Energizer, Rayovac, Sony | Phonak, Oticon, ReSound (rechargeable models) | Older models, less common today | ZeniPower, Power One |
Introduction
Hearing aid batteries are the lifeblood of your device, providing the power needed to sustain sound amplification. Among various sizes, size 312 is the most prevalent, owing to its compatibility with a broad range of hearing aids. Choosing the right battery involves considering factors like performance, lifespan, environmental impact, and cost. This guide will explore all these aspects and help you select the best option for your hearing aid needs.
Understanding Hearing Aid Battery Size 312
What Is a Size 312 Hearing Aid Battery?
A size 312 hearing aid battery is a small, zinc-air cell, approximately 5.8mm in diameter and 3.6mm in height. It features a tab with a color-coded brown sticker, which helps users identify the size easily. These batteries are designed to deliver a reliable power source over several days, depending on usage and device demands.
Common Use Cases
Size 312 batteries are predominantly used in:
– In-the-ear (ITE) hearing aids
– Some behind-the-ear (BTE) models with smaller batteries
– Custom and discreet hearing aids requiring compact power sources
Advantages of Size 312 Batteries
- Compact Size: Fits snugly in small hearing aids.
- High Energy Density: Provides long-lasting power for most daily activities.
- Availability: Widely available from top brands like Duracell, Energizer, Rayovac, and more.
- Affordable: Cost-effective for daily replacement.
Types of Hearing Aid Batteries Size 312
Zinc-Air Batteries
The most common type, zinc-air batteries, rely on absorbing oxygen from the air to generate power. They are sealed and activated upon exposure to air, offering high energy density and long shelf life.
Rechargeable Batteries
Modern hearing aids increasingly incorporate rechargeable batteries, such as lithium-ion or silver-zinc variants. These offer convenience and eco-friendliness but are less prevalent in size 312 formats.
Silver-Oxide Batteries
Older models or specialized hearing aids might use silver-oxide batteries, known for their stable voltage and reliable performance.
How to Choose the Right Size 312 Hearing Aid Battery
Key Factors to Consider
| Factor | Details |
|---|---|
| Device Compatibility | Ensure the battery size matches your hearing aid specifications. |
| Battery Life | Check average lifespan—longer days between replacements are preferable. |
| Brand Reliability | Choose reputable brands like Duracell, Rayovac, or Energizer. |
| Cost and Value | Balance affordability with quality performance. |
| Environmental Impact | Opt for mercury-free options and recyclable packaging. |
| Packaging and Convenience | Child-resistant and senior-friendly packaging features. |
Top Brands and Where to Buy
- Walmart offers bulk packs of Duracell hearing aid batteries, providing affordability and availability.
- Hearingaidbatteryshop.com specializes in a wide selection of zinc-air batteries from leading manufacturers like Power One and ZeniPower.
- Target stocks Energizer size 312 batteries, known for reliability.
- Rayovac offers budget-friendly, high-performance batteries, packaged in child-resistant containers.
- Hearing Group supplies batteries in convenient packs, ideal for long-term users.
- Staples provides options for quick replacements, though availability may vary.
- Signia manufactures exchangeable batteries compatible with specific hearing aids.
- Best Buy features reviews and options for hearing aid batteries, emphasizing performance.
- NCOA provides educational resources on choosing the best batteries.
Technical Features of Hearing Aid Batteries Size 312
| Feature | Details |
|---|---|
| Type | Zinc-air, Silver-oxide, Rechargeable Lithium-ion |
| Voltage | 1.4V (zinc-air and silver-oxide), 1.2V (rechargeable) |
| Capacity | 150-200 mAh (varies by brand and usage) |
| Shelf Life | Up to 3 years unopened |
| Activation | Air-activated (zinc-air) |
| Dimensions | Diameter: 5.8mm; Height: 3.6mm |
| Color Code | Brown tab (standard for size 312) |
How to Properly Use and Store Size 312 Batteries
Activation
Zinc-air batteries are sealed and only activate when exposed to air. Remove the tab just before inserting into your hearing aid for maximum lifespan.
Storage Tips
- Keep in a cool, dry place.
- Store batteries in their original packaging until use.
- Avoid extreme temperatures, which can reduce shelf life.
- Keep out of reach of children and seniors for safety.
Disposal and Recycling
Dispose of used batteries responsibly. Many brands and local facilities offer recycling programs to minimize environmental impact.
Maintenance and Troubleshooting
Common Issues
- Battery Dying Quickly: May be due to device settings, moisture, or poor quality batteries.
- Intermittent Sound or No Sound: Check battery placement, clean contacts, or try a fresh battery.
- Corrosion or Leakage: Store batteries properly and replace expired ones promptly.
Tips for Longer Battery Life
- Turn off hearing aids when not in use.
- Remove batteries during extended periods of non-use.
- Keep hearing aids and contacts clean.
- Use high-quality batteries from trusted brands.
Future Trends in Hearing Aid Batteries
Advancements focus on rechargeable technologies, longer-lasting zinc-air formulations, and environmentally friendly options. Some brands are exploring solid-state batteries, promising even higher energy densities and safer disposal.
Comparison of Technical Features
| Feature | Standard Zinc-Air (Size 312) | Rechargeable Lithium-ion | Silver-Oxide |
|---|---|---|---|
| Voltage | 1.4V | 1.2V – 1.4V | 1.4V |
| Lifespan (per charge/use) | 3-7 days | 12-24 hours | Similar to zinc-air |
| Rechargeable | No | Yes | No |
| Environmental Impact | Mercury-free options available | Eco-friendly, reusable | Mercury-free |
| Price | Low | Higher initial cost | Similar to zinc-air |
| Availability | Widely available from top brands | Limited to specific models | Less common today |
Related Video
Conclusion
Choosing the right hearing aid batteries size 312 involves understanding your device requirements, lifestyle, and environmental considerations. Zinc-air batteries remain the standard for most users, offering affordability and reliable performance. However, rechargeable options are gaining popularity for their convenience and eco-friendliness. Top brands such as Duracell, Energizer, and Rayovac provide high-quality options readily available from multiple retailers. Proper storage, handling, and disposal extend battery life and reduce environmental impact, ensuring your hearing aid functions optimally.
FAQ
1. What is a size 312 hearing aid battery?
A size 312 hearing aid battery is a small zinc-air cell designed to power many hearing aids. It measures about 5.8mm in diameter and 3.6mm in height, with a brown tab for easy identification.
2. How long does a size 312 battery last?
On average, a size 312 battery lasts 3 to 7 days depending on usage, device settings, and environmental factors.
3. Are rechargeable batteries available in size 312?
While most rechargeable hearing aids use lithium-ion batteries, some models compatible with size 312 may incorporate rechargeable silver-zinc or lithium-ion batteries, but they are less common.
4. How can I extend the life of my hearing aid batteries?
Turn off your hearing aid when not in use, store batteries properly, keep devices clean, and replace batteries before they are completely dead.
5. Are zinc-air batteries environmentally friendly?
Yes, especially mercury-free options. Recycling programs help minimize environmental impact.
6. Can I use batteries from different brands interchangeably?
Yes, as long as they are size 312 and compatible with your device. Stick to reputable brands for safety and performance.
7. How do I know if my battery is compatible with my hearing aid?
Check your hearing aid’s specifications or manual. The size 312 is standard for many devices, but always verify compatibility.
8. How should I store my hearing aid batteries?
Store in a cool, dry place away from direct sunlight and extreme temperatures. Keep batteries in their original packaging until use.
9. What should I do if my hearing aid isn’t working properly?
Replace the battery with a fresh one, clean the contacts, and ensure correct placement. If problems persist, consult your audiologist.
10. Where can I buy high-quality size 312 batteries?
From major retailers like Walmart, Target, and Staples, or directly from brands’ websites like rayovac.com, hearingaidbatteryshop.com, and others for the best deals and authenticity.
This detailed guide aims to empower you with knowledge about hearing aid batteries size 312, ensuring optimal device performance and a better hearing experience.