Z-Power rechargeable batteries? Forget it!
Having had some experience with this miserable set-up, it is not worth having. This rechargeable system for hearing aids is just far too unreliable.
You will find this on some hearing aids from 2017 and 2018:
STARKEY Muse
OTICON Opn (original version)
WIDEX Beyond and Evoke
RESOUND LiNX 3D
Avoid is our advice. All credit to Phonak for not venturing down this route. It will be dumped as a power method quite soon.
Lithium ion is the only answer (Phonak Marvel, Oticon Opn S, Sivantos Signia Styletto, Starkey Livio AI, etc.)
MR, 6 6 19