When you buy new hearing aids at Hidden Hearing, you’ll get free batteries for the first three years. You can read more about the benefits of being a Hidden Hearing customer here:
Why Hidden Hearing
Free aftercare services
Or just ask for details at your nearest Hidden Hearing clinic.
Find nearest clinic
Using the comparison chart for battery colour codes below, you'll always know which battery size is right for your hearing aids. So when you need new hearing aid batteries, just compare the coloured tabs on any batteries you have at home and match them to the table below.
| Size | Color Code | Typical Uses | Average Lifespan |
| 675 | Blue | Power BTE | 9–20 days |
| 13 | Orange | BTE, ITE | 6–14 days |
| 312 | Brown | miniBTE, miniRITE, ITC | 3–10 days |
| 10 | Yellow | CIC, IIC | 3–7 days |
Using rechargeable batteries means you don’t have to buy new batteries or throw away used ones. Your wallet and the environment will both benefit.
Should you choose disposable or rechargeable batteries? Use the lists below to help you.
| Rechargeable batteries | Disposable batteries |
| Practical and easy to handle | Universally available |
| Overnight charge lasts all day | Batteries can be replaced on-the-go |
| Only available with certain hearing aids | Handling batteries can be fiddly |
| More environmentally friendly |
Less environmentally friendly |
