بطارية Wein MRB625 1.35V زنك-هواء

Finally got my old light meter working again after swapping out the dead mercury cell for these. The 1.35V voltage is exactly what my Pentax needs for accurate readings, and the zinc-air chemistry feels way less sketchy to have around.

Finally got these for my old Minolta and the voltage is dead stable—no more wonky meter readings. They fire up instantly and last me a full season of shooting, which is all I ask for.

The exact 1.35V output is spot-on for my vintage camera meter, and it reads perfectly against my known-light reference. Only gripe is the short lifespan once the tab is pulled, but that's expected for zinc-air chemistry.