Hearing Aid Batteries
Which battery size do you have, how many does SGK cover, how do you make batteries last longer? We've gathered the questions long-time device users ask most.
Which battery size do you have?
Hearing aid batteries are told apart by a colour code; the coloured strip on the box shows the size. There are four common sizes:
10YellowIn-canal and invisible models (CIC / IIC)
312BrownReceiver-in-canal (RIC) and small in-the-ear
13OrangeBehind-the-ear (BTE) and larger in-the-ear
675BluePower and super-power behind-the-ear
The bigger the size, the longer the battery lasts — but the device gets bigger too. If you don't know which size you have, bring the device to a branch and we'll tell you at a glance.
SGK provides battery support for battery-powered devices
For battery-powered hearing aids, SGK battery support can be provided when there's an appropriate report and prescription. The quantity given and delivery terms are set by the current Health Implementation Communiqué; we check your current entitlement from your MEDULA record. This applies to holders of Turkish social security; it doesn't apply otherwise.
This is a detail people who choose battery-powered devices often overlook — it's not as visible as the device itself, but it noticeably lowers the annual cost. Details and other SGK contributions are on our SGK support page.
Simple habits that extend battery life
- Wait 1-2 minutes after removing the tab. These batteries run on air; once the tab comes off, air gets in and the battery "wakes up". Waiting a bit instead of fitting it right away extends its life.
- Don't stick the tab back on. Once opened, a battery keeps working; putting the tab back doesn't stop it.
- Leave the door open at night. Leaving the battery door ajar when you're not using the device protects the battery and lets moisture escape.
- Store at room temperature. The fridge doesn't extend battery life; it causes condensation and can damage it.
- Carry a spare battery with you but don't keep it in the same pocket as coins — contact can short it out.
Battery or rechargeable?
Both have their place; which suits you depends on your dexterity, daily routine and travel habits.
| Topic | Battery | Rechargeable |
|---|---|---|
| Daily use | Replaced when it runs out | Charged overnight, used all day |
| Dexterity | You need to handle small batteries | No battery changes, easier |
| Travel | No problem with a spare battery | Needs a way to charge |
| SGK | Battery support with an appropriate report and prescription | Battery support doesn't apply |
Rechargeable models are noticeably more comfortable for users with reduced dexterity. For those who'll be away from a socket for long periods, battery models are more reliable. For a model comparison, see our device types page.
What does the device do before the battery runs out?
Most devices give a warning sound before the battery runs out — usually a few beeps in a row. After the warning, you usually have a short time left, so it's good to carry a spare battery with you.
If the device's sound is fading, crackling or cutting in and out, the battery is the first thing to check. If a fresh battery doesn't fix it, the filter may be blocked or moisture may have built up; bring it to a branch and we'll take a look.
Safety: keep batteries away from children
Hearing aid batteries are small and shiny; they pose a swallowing risk for children and pets. Swallowing one is a serious emergency.
Store batteries in a locked box or somewhere out of reach. If you suspect one has been swallowed, go without delay to the nearest emergency department.
Frequently asked questions
Battery life varies by the device model, battery size, daily hours of use, the power level needed and Bluetooth use. Disposable batteries can last anywhere from a few days to about ten days in most devices. We can track the right range for your own device together as you use it.
For battery-powered hearing aids, SGK battery support can be provided when there's an appropriate report and prescription. Quantity and delivery terms are set by the current Health Implementation Communiqué. Disposable-battery support doesn't apply to rechargeable devices. We check your current entitlement through MEDULA.
No. The fridge can damage batteries because of moisture. Store batteries in their own packaging, at room temperature, in a dry place, away from children, pets and metal objects.
The zinc-air batteries used in hearing aids start working once they're exposed to air after the tab is removed. Waiting for the time the manufacturer recommends — about one or two minutes for most products — instead of fitting it right away lets the battery activate properly. Only remove the tab when you're about to use the battery.
You don't need to replace the battery day to day; you charge the device regularly. The rechargeable battery inside can lose capacity over the years. In that case, it's replaced by an authorised service, not the user.
Most devices give an audible warning when the battery or charge is low; some models also have a light or a phone app notification. The time left after the warning varies by model and use. If you use a battery-powered device, it's good to carry a spare battery in its packaging.
This information is for general guidance only and doesn't replace diagnosis or treatment. If you have a complaint, see an ENT specialist.
Come in for a free hearing test
The test and consultation are free at all our branches, with no obligation to buy. No appointment needed either.