I have a question.
Many cameras and light meters were designed to use 1.3 v mercury batteries, which were banned almost 30 years ago. Air-activated Wein cells make the correct voltage, but they don’t last very long. There are adapters that contain circuitry to convert 1.5 v to 1.3 v, but reviews on one offered on Amazon said it didn’t work.
If a company like Wein can develop a 1.3 v air-activated cell, why can’t they (or another company) simply make a 1.3 v alkaline cell?