Quick answer: Size 13 hearing aid batteries (often zinc air, commonly labelled PR48 or orange) fit many behind the ear hearing aids. To get the best life, peel the tab, wait about 1 minute before inserting, keep spares dry at room temperature, and choose a pack size that matches how quickly you use them.
If you are shopping for size 13 cells, start with our size 13 hearing aid batteries collection, or go straight to a popular option like Rayovac size 13 batteries.
What are size 13 hearing aid batteries?
Size 13 batteries are small disposable zinc air cells designed for hearing aids. They are commonly colour coded orange, and you will often see codes like 13, PR48, or 7000ZD on packaging. Once the tab is removed, air activates the cell and it begins to discharge gradually, even if it is not in a device.
How to confirm you need size 13
Check your current battery or user guide
The safest way is to read the number on the battery you are replacing. If it says 13, you are in the right place. If the label is hard to read, check your hearing aid manual or the battery door. Many devices have the size printed inside the battery compartment.
Use battery colour as a cross check
Colour can help, but it is not perfect. Size 13 is usually orange. If your previous pack was orange and marked 13, that is a strong match. If you are unsure, our guide on choosing the right battery size can help you confirm before you order.
How long do size 13 hearing aid batteries last?
Battery life depends on your hearing aid model, daily wear time, streaming, and humidity. As a rough guide, many people see anything from a few days to a couple of weeks per battery. If you stream audio or take lots of calls, expect shorter life.
- Higher power devices: may use a size 13 faster.
- Bluetooth streaming: usually increases power draw.
- Moisture and sweat: can reduce performance.
How to activate and insert a size 13 battery
- Wash and dry your hands.
- Peel off the sticky tab.
- Wait about 1 minute so the zinc air chemistry can fully activate.
- Insert with the flat side facing up (the side with small holes).
- Close the battery door gently. Do not force it.
If you are troubleshooting a device that will not power on, a hearing aid battery tester can quickly confirm whether the cell is still good.
Storage tips for longer battery life
Keep batteries at room temperature
Store batteries in a cool, dry place. Avoid bathrooms, cars, windowsills, and the fridge. Sudden temperature changes can cause condensation, which is not ideal for zinc air cells.
Do not remove the tab until you are ready
Once the tab is off, the battery begins to discharge. Only unseal what you plan to use soon.
Avoid loose batteries in pockets or bags
Keep batteries in their original pack or a purpose made case. Loose batteries can short circuit if they touch coins, keys, or other metal objects.
Common problems and quick fixes
The battery drains too fast
Check if you are streaming more than usual, or if your device is in a humid environment. Try waiting a full minute after tab removal. Also confirm you are using the correct size and that the battery door closes properly.
The hearing aid cuts out
Intermittent sound can be caused by moisture, wax buildup, or a weak battery. Replace the battery first, then follow your device cleaning routine if the issue continues.
The battery feels stuck
Open the door fully and tip the device gently into your hand. Avoid sharp objects that could damage the contacts.
Buying size 13 hearing aid batteries in New Zealand
When you buy online, look for fresh stock, clear sizing, and a brand you trust. If you want to compare options, you can browse all sizes in our shop hearing aid batteries collection.
If you have more than one device at home, consider stocking a second common size as well, such as size 312 hearing aid batteries, so you are covered if a family member uses a different model.
FAQs
Are size 13 hearing aid batteries the same as PR48?
In most brands, yes. Size 13 is commonly labelled PR48 for zinc air chemistry. Always check your pack and your hearing aid manual to confirm.
What colour are size 13 hearing aid batteries?
Most size 13 packs use an orange colour code. Colour is a helpful cue, but the printed size number is the best confirmation.
How long should I wait after removing the tab?
We recommend waiting about 1 minute before inserting the battery. This gives zinc air cells time to activate, which can improve consistency.
Can I store size 13 batteries in the fridge?
We do not recommend it. Cold storage can create condensation when batteries warm up, and moisture can affect performance. A cool, dry cupboard is usually best.
Why does my new battery read low on a tester?
Zinc air batteries can show lower voltage until they have had time to activate. Remove the tab, wait about a minute, then test again.
How do I dispose of hearing aid batteries in NZ?
Check local council guidance for household battery recycling options, and use a battery recycling drop off if available. Store used batteries safely out of reach of children and pets until you can dispose of them.
Next steps
- Shop size 13 hearing aid batteries
- How to choose the right battery size for your hearing aid
- Hearing aid batteries near me in NZ: what to look for
- Hearing aid battery tester guide: how to use one and what results mean
