Disposable battery sizes
Hearing aid batteries use a standard colour code on the tab and packet. Check the size in your user guide or on your old battery.
| Size 10 | Yellow | smallest, tiny in-ear aids |
| Size 312 | Brown | common in small behind-ear and in-ear aids |
| Size 13 | Orange | larger behind-ear and in-ear aids |
| Size 675 | Blue | largest, power aids |
Using disposable batteries
- Peel off the sticker tab and wait about a minute before inserting.
- Open the battery drawer when the aids aren't in use.
- Keep spares with you and store them at room temperature.
- Keep batteries away from children and pets. If a battery is swallowed, get urgent medical help — call 999 or go to A&E.
Rechargeable aids
- Charge every night so you start each day full. Rechargeable aids don't take disposable batteries.
- Keep the charger contacts clean and dry; use the charger and cable supplied.
- If the aids no longer last a full day, contact the clinic — the battery may need checking.
Request spares
This opens WhatsApp with a message ready to send. Nothing is sent or saved by this app.
Prices and availability of spares: ask the clinic.
Contact the clinic
Ruislip Ear Care · Cleaner Ears (Hayes) · Wembley Ear Clinic
Sources
- NHS: Hearing loss
- Hearing aid help and our brand guides (manufacturer support pages)
Checked October 2026. If anything here differs from what your clinician tells you, follow your clinician.