[This review was collected as part of a promotion.] Batteries rayocac for my hearing aid. Fit in perfectly and last so long. Easy to put in and take out.
I have used Rayovac size 13 batteries for the past 5 years in my hearing aids and have been quite satisfied with the performance and longevity. The "new" batteries however, are not so great. The old batteries lasted 18% longer in similar temperature and environmental conditions. I will try another package hoping this fist package was a fluke, otherwise I will switch to another brand and try Rayovac again at a later date. Very disappointed.