Yes, I was wrong about typical freezer temperatures (mine is 3°F), and too
about Silver-Oxide (AgO) cell shelf life.
According to Eveready, AgO cells have:
"Excellent service maintenance; in excess of 90% after storage at 21°C(70°C)
for five years."
An accompanying graph shows storage at 0°C gives better than 90% after more
than 10 years.
Here is information from Eveready about Silver-Oxide cells and temperature:
"Silver oxide batteries have good performance characteristics at temperature
extremes. They can be used up to 55°C(131°F). Silver oxide batteries
utilizing KOH as an electrolyte will operate with less loss of efficiency at
lower temperatures than comparable NaOH batteries. Batteries with KOH
electrolyte will operate down to -28°C (-20°F) and NaOH batteries down
to -10°C(14°F) with some service reduction in both types."
I can't find information on whether 357 cells are NaOH or KOH electrolyte,
but clearly most of us do not need to refrigerate these cells to maintain
shelf life.
Chip
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