In terms of dependability and convenience, rechargeable hearing aid batteries are revolutionary. You can make sure your hearing aids continue to be a trustworthy part of your everyday life by being aware of their lifespan and adopting preventative measures. To get the most out of your investment, correct care and usage are essential, regardless of whether you're new to rechargeable hearing aids or want to prolong the life of your existing device.
Rechargeable hearing aids have grown in popularity recently because of their long-term cost reductions, environmental advantages, and ease. These devices' rechargeable batteries, which do away with the need for regular battery replacements, are a crucial component. To guarantee optimum performance, it is crucial to comprehend how long these batteries last and how to maintain them.
How Long Do Rechargeable Hearing Aid Batteries Last?
Rechargeable hearing aid batteries are designed to provide consistent and reliable power, but their lifespan varies based on the battery type, hearing aid model, and usage patterns. The two most common types of rechargeable batteries used in hearing aids are lithium-ion and silver-zinc. Let’s explore their longevity in more detail
1. Lithium-Ion Batteries: The Industry Standard
Lithium-ion batteries are widely used in modern rechargeable hearing aids due to their high energy density, fast charging capability, and longer lifespan compared to other battery types.
Typical Lifespan:
- On average, lithium-ion batteries last 3 to 5 years before they need to be replaced.
- Over time, their capacity gradually declines, leading to shorter usage times between charges.
2. Silver-Zinc Batteries: A Lesser-Known Alternative
Silver-zinc rechargeable batteries are less common but are still used in certain hearing aid models, especially older ones or those that allow for removable battery replacements.
Typical Lifespan:
- Silver-zinc batteries generally last 1 to 3 years before they need to be replaced.
- Their shorter lifespan compared to lithium-ion is due to the different chemical composition, which tends to degrade faster.
Factors Affecting Rechargeable Hearing Aid Battery Longevity
The lifespan and performance of rechargeable hearing aid batteries depend on several factors. While lithium-ion batteries typically last 3 to 5 years and silver-zinc batteries last 1 to 3 years, their actual longevity can vary based on usage, charging habits, environmental conditions, and maintenance. Below, we explore the key factors that influence battery lifespan in detail.
1. Charging Habits and Battery Care
Proper charging practices play a crucial role in extending the life of rechargeable hearing aid batteries.
- Overcharging or Undercharging
Lithium-ion batteries are designed to stop charging once they reach full capacity, so leaving them in the charger overnight typically doesn’t cause damage. However, excessive charging cycles can degrade the battery over time.
Silver-zinc batteries, on the other hand, should be fully charged and not partially charged frequently, as this can shorten their lifespan.
Charging daily is recommended for most rechargeable hearing aids to ensure consistent performance.
Avoid letting the battery drain completely to 0% frequently, as deep discharges can reduce battery longevity over time.
If you are not using your hearing aids for an extended period, store them in a partially charged state (about 40-60%) rather than fully charged or empty.
2. Temperature and Environmental Conditions
Rechargeable hearing aid batteries are sensitive to temperature and environmental factors.
Exposure to high temperatures (above 85°F or 30°C) can cause the battery to degrade faster, leading to reduced capacity over time.
Avoid placing your hearing aids near direct sunlight, radiators, or heating devices when charging or storing them.
Extreme Cold
Cold temperatures (below 32°F or 0°C) can temporarily reduce battery performance, making it seem like the battery is draining faster.
Avoid leaving your hearing aids in cold environments, such as outside during winter or in a car overnight in freezing temperatures.
3. Frequency and Type of Use
How often and how you use your hearing aids can impact battery longevity.
Hours of Daily Use
- The more hours you use your hearing aids per day, the more charge cycles the battery goes through, which affects its overall lifespan.
- Most hearing aids offer 16-30 hours of use per charge, depending on settings and features.
Bluetooth Streaming and High-Power Features
- Streaming audio via Bluetooth (phone calls, music, TV, etc.) requires significantly more power, reducing daily battery life.
- Hearing aids with advanced noise reduction, AI processing, or directional microphones also consume more energy.
- If you use streaming often, consider adjusting streaming settings or using a separate Bluetooth streamer to offload some power usage.
4. Maintenance and Cleanliness
Keeping your hearing aids and battery contacts clean ensures efficient charging and longer battery life.
Cleaning Battery Contacts
- Dust, earwax, or debris on the charging contacts can lead to poor connectivity, causing slow charging or inefficient power transfer.
- Use a soft dry cloth or hearing aid brush to clean the contacts regularly.
Preventing Corrosion
- Sweat and moisture can cause battery corrosion, affecting performance.
- Store hearing aids in a dry environment, and if your hearing aids are not moisture-resistant, use a drying kit at night.
Regular Hearing Aid Servicing
- Routine maintenance by a hearing care professional ensures that your hearing aids and batteries remain in good condition.
5. Storage Practices When Not in Use
Proper storage when hearing aids are not in use can prevent battery degradation.
Storing at the Right Temperature
- If you won’t be using your hearing aids for a long time, store them in a cool, dry place at room temperature.
- Avoid placing them in hot environments (car dashboard, direct sunlight) or very cold conditions.
Powering Down Unused Hearing Aids
- If you are not using your hearing aids for several days, turn them off to preserve battery life.
- Some rechargeable hearing aids automatically go into sleep mode when removed from the ear, which helps conserve power.
6. Battery Age and Natural Degradation
Over time, all rechargeable batteries naturally degrade, even with proper care.
Chemical Wear and Tear
- Rechargeable batteries, particularly lithium-ion, lose capacity over time due to the chemical reactions occurring within the battery.
- Even if you use your hearing aids correctly, the battery will slowly degrade after hundreds of charge cycles, leading to shorter battery life.
Charge Cycle Limits
- Lithium-ion batteries typically last for 300–500 full charge cycles, meaning they will start to hold less charge after 2-3 years of daily use.
- Silver-zinc batteries degrade faster, needing replacement in 1-2 years with regular use.
Signs of Aging Batteries
- If your hearing aid doesn’t last a full day on a single charge or takes longer to charge, the battery may be nearing the end of its lifespan.
- A hearing aid that shuts off unexpectedly even when fully charged is another sign that the battery is deteriorating.
7. Software and Firmware Updates
Hearing aid manufacturers frequently release software updates that optimize battery efficiency.
Energy Optimization
- New firmware updates can improve power management, allowing the battery to last longer between charges.
- Some updates reduce unnecessary power drain from background processes, improving daily battery life.
Automatic Updates May Drain Battery Temporarily
- Some hearing aids automatically download and install updates while charging.
- If you notice a sudden drop in battery performance, check if a firmware update was recently installed, as it may have changed battery behavior.
It's ideal to keep yourself as educated with your hearing aids and a new breakthrough in the technology. Ask your query via Book an Appointment today. For more information visit https://hearing.careinc.ca or you can call us today at (403)605-6300