What's the difference between disposable and rechargeable hearing aid batteries?

Disposable zinc-air batteries are replaced every few days to weeks and are activated when you remove the adhesive tab. They provide consistent power throughout their life and work well in all climates. Rechargeable hearing aids use built-in lithium-ion batteries that you charge nightly in a charging case, typically providing 16-24 hours of use per charge. Rechargeable options are more convenient and environmentally friendly, but disposable batteries can be more reliable for extended travel or in areas without consistent electricity.