Are Rechargeable Batteries Sensible for Use with my Hearing Aid?
Rechargeable hearing aid batteries are a smart idea – in theory. But are they sensible in real life? The first rechargeable hearing aid batteries were large (meaning that they could only be used in over-the-ear type aids), took hours to recharge, and did not hold that charge for very long. Instead of the 12 to 14 hours of use that hearing aid wearers need, these early batteries commonly lasted only 5 to 6 hours.