60 Power One Hearing Aid Batteries, SIZE 312, Newest Version Exp 2021
Have used these over the years before with good luck.
Replacement Battery for Remington MS2 280, 390 & Ms3 1000, 2700 , 4700
Remingto Shaver Batteries
Haven't installed them yet. Should be OK.
Battery Tester for Watches, Calculator And Camera Batteries
Just what I wanted to replace the old one I had for years.