For example, some of the new CIC's are using size 5 instead of size 10 in order for the custom aid to be manufactured smaller. This is becoming common as hearing aids get smaller. Of course, the smaller the battery, the shorter the battery life. The size 5 batteries may only last a week. This is why battery life should to be taken into consideration when choosing a hearing aid.
Some patients are interested in rechargeable hearing aids.
People like the idea of not having to change batteries every few weeks. Because it can be problematic if your rechargeable aids die out while in use, we generally only recommend them in limited circumstances. For example, the blind or others who have dexterity difficulties may have trouble changing batteries and would be suitable candidates for rechargable devices.