I wear Unitrons Moxis. I have tried Rayovac, Energizers, CVSs branded, and Duracells. Duracells are the only ones that I find to be reliable. I have found brand new Rayovacs to be DOA. The energizes and the CVS batteries were giving me less than 24 hours. I don’t know if I have just been unlucky with non-Duracells or if my hearing aids are persnickety but, I get 5-6 days consistently with the Duracells.
I am picking up a set of Trax42s on Wednesday with size 13 recharables. I hope they give me more consistent performance.