@smallisland I have no ambition to get rechargeable batteries. I have seen a lot of issues with rechargeable batteries. The older generation do not need the additional grief but it is less hassle for those with dexterity or vision problems. We have to decide for ourselves what works best. For me, I don't have to worry if the batteries fully charged overnight or they no longer hold the charge as long as they used to. But the biggest complaint is that some hearing aids have to be sent back to the manufacturer for replacing the battery. If you have custom molds, as I do, a loaner aid is usually not an option. I would not want to be without my hearing aid for the time it would take to get them back.
Tony in Michigan