Hearing Aid Batteries: A Complete Guide

Choosing the right hearing aid batteries is as important as choosing the right hearing aid. Without reliable power, the most advanced device can’t do its job. Whether you're new to hearing aids or managing long-term hearing loss, understanding your battery options will help you avoid interruptions and keep your device performing as it should.

Most modern hearing aids rely on one of two power sources: traditional disposable batteries or newer rechargeable batteries. Both types offer benefits depending on your hearing aid model, daily routine, and personal preferences. 

This guide explains the different types of batteries, standard battery sizes, and how long you can expect them to last.

 

Battery Types and Sizes (Color Codes Included)

There are two main types of hearing aid batteries used today: disposable zinc-air batteries and rechargeable batteries. Each type fits different devices and use cases.

Disposable Batteries

Disposable hearing aid batteries are still widely used. These are zinc-air batteries that activate when exposed to air—specifically, when you remove the sticker. Once activated, the battery begins to drain, even if the hearing aid is off.

These are easy to find and available in standard sizes, which are color-coded for convenience. Battery life depends on the battery size, hearing aid type, and how often the hearing aid is in use. Most disposable batteries last between three and twenty days.

Users must store them in a dry place at room temperature to prevent early drain. When a battery dies, open the battery compartment, remove the old one, and insert a new battery.

Many trusted brands manufacture disposable zinc-air hearing aid batteries, including:

• Rayovac: Well-known for consistent performance and long battery life
• Duracell: Offers stable power delivery and a long shelf life 
• Power One: German-made, frequently recommended by audiologists 
• Energizer: A familiar brand with full coverage of all standard sizes 
• Signia: Branded batteries designed to pair with Signia hearing aids 
• ZeniPower: A more affordable option with decent reliability 
• iCellTech: Popular for high-capacity batteries, especially in Size 675 
• Panasonic: Steady voltage output and widely available

Disposable hearing aid batteries come in four main sizes. Each size is color-coded for easy identification and matched to specific hearing aid styles.

Here are the standard sizes you’ll find:

• Size 10 (Yellow): The smallest size. Often used in completely-in-canal (CIC), invisible-in-canal (IIC), and mini receiver-in-canal (RIC) devices. Battery life ranges from three to seven days.
• Size 312 (Brown): A common mid-range size, typically found in mini behind-the-ear (BTE), in-the-ear (ITE), and in-the-canal (ITC) hearing aids. Lasts three to ten days.
• Size 13 (Orange): A larger battery used in standard BTE and some ITE styles. Offers longer battery life: six to fourteen days.
• Size 675 (Blue): The largest size. Primarily used in power BTE hearing aids and cochlear implants. Longest life span, lasting up to twenty days under normal use.

Battery choice isn't just about how long it lasts. It also influences hearing aid design, comfort, and ease of handling. Smaller batteries support more discreet styles, while larger ones provide longer battery life and easier handling for those with limited dexterity.

All the options above are great choices.

Rechargeable Batteries

Rechargeable hearing aid batteries have become more common as technology has improved. These batteries are built into the hearing aid and typically recharge in a case or a docking station. They're sealed inside the device, which means the user doesn’t open a battery door or swap batteries daily.

Rechargeable batteries simplify daily wear and reduce waste, making them a useful choice for those who may find handling small parts difficult. They’re also favored for travel and convenience—users charge their device overnight and wear it all day.

Many of today’s leading manufacturers now offer rechargeable models, including:

• Oticon: Intent, Own 
• Phonak: Infinio 
• Starkey: Edge, Signature 
• ReSound: Nexia 
• Widex: SmartRIC, Moment 
• Signia: Styletto, Insio

If you're exploring options, the Nova Hearing Aid is a lightweight rechargeable device that combines comfort and all-day power. 

 

Matching Battery Size to Hearing Aid Type

Hearing aids vary in size, shape, and power requirements. These differences affect which battery size each device uses. Smaller hearing aids with limited internal space use compact batteries, while larger models—especially those designed for more severe hearing loss—require bigger batteries to support stronger amplification and advanced features.

Completely-in-canal (CIC) and invisible-in-canal (IIC) hearing aids are among the smallest devices on the market and typically use Size 10 batteries. Their reduced size makes them discreet, but also means shorter battery life, often requiring more frequent replacements. In-the-canal (ITC) and in-the-ear (ITE) styles, which offer more space and functionality, usually take Size 312 or Size 13 batteries, depending on whether the device includes features like wireless connectivity or directional microphones.

Behind-the-ear (BTE) models, which rest behind the ear with a tube leading to an ear mold, commonly use larger batteries. Mini BTE devices may use Size 13, while standard and high-power BTEs often rely on Size 675 batteries to ensure longer usage between changes. These larger batteries are essential for users with more demanding hearing needs or for those using cochlear implants.

While many traditional models use disposable batteries, some larger or newer designs now incorporate rechargeable batteries instead. No matter the configuration, it’s important that the battery compartment and battery door are easy to access, especially for users with limited dexterity or vision. Selecting the right battery type ensures consistent power and supports the features your hearing aid is designed to deliver.

 

How Long Do Hearing Aid Batteries Last?

Battery life depends on several factors: the battery size, the type of hearing aid, how many hours it’s used per day, and whether you're streaming audio (like calls or music).

Disposable batteries have individual lifespans based on size:

• Size 10 lasts around 3–7 days 
• Size 312 lasts approximately 3–10 days 
• Size 13 provides 6–14 days 
• Size 675 offers the longest at 9–20 days

These ranges assume the hearing aid is used for 12–16 hours per day and stored properly when not in use.

Rechargeable hearing aid batteries, on the other hand, are designed to last a full day on a single charge. Most modern rechargeable models give you 18 to 24 hours of power per charge, depending on usage.

The rechargeable battery itself will usually last between 3 and 5 years before requiring replacement, which must be done by a hearing professional.

For a detailed breakdown by brand and usage scenario, read our full guide: How Long Do Hearing Aid Batteries Last?

 

Tips to Extend Hearing Aid Battery Life

Whether using rechargeable batteries or disposable batteries, proper care extends battery life and ensures consistent performance.

• Store at room temperature: Heat and humidity can reduce battery performance. Keep spare batteries in a dry place.
• Open the battery door: For disposable-powered hearing aids, leave the battery door open when not in use to reduce drain.
• Replace with a new battery regularly: Don’t wait for the tone or alert. If the sound quality drops, change it early.
• Avoid touching battery surfaces: Oils from the skin can affect contact points.
• Dispose properly: Recycle old batteries at local drop-offs where possible. Never throw them in regular trash.

For rechargeable hearing aids, keep the charging contacts clean and place the device on the charger every night to maintain full charge cycles.

Not sure what's right for your device or usage habits? Check our FAQs page for quick answers to common questions about battery use, compatibility, and care.

 

Disposable vs Rechargeable Batteries

Choosing between disposable and rechargeable batteries depends on how you use your hearing aid, the features you need, and your preferences for maintenance. Here’s a clear comparison to help guide your decision:

Both power options are reliable. Newer hearing aids increasingly lean toward rechargeable batteries for user convenience, but disposable batteries remain a strong choice for certain models and user preferences.

 

Choosing the Right Battery for Your Hearing Needs

The right hearing aid battery depends on the device you use, your needs, and how much maintenance you're comfortable handling. Whether you prefer disposable batteries or have moved to a rechargeable hearing aid, knowing how to care for your battery system can improve overall performance and reduce interruptions.

If you're unsure which battery size your device uses or want help choosing between different types of batteries, speak with your hearing care professional—or reach out to our team for guidance. We're here to make improved hearing easier for everyone.