How long do the batteries last?
How long your hearing aid batteries last depends on various factors, so there is no general answer that is going to work for all hearing aid wearers. The best way to understand the battery life of your hearing aid battery is to benchmark the battery performance over time. Once you become familiar with your hearing aid and batteries, you can estimate when the life of your battery will end. Therefore, it is always important to carry spare batteries with you at all times.