> Kodak Photolife KL2CR5.

> 1.2AH although the manufacturer says 3AH

Assuming the lower, you could expect a 5 year life if you get
the average consumption down to 1,200,000uAh/44,000h or
~27uA. If you assume the higher Ah, then you could run at
an average of 3,000,000uAh/44000h or ~ 68uA. Design for
the worst, hope for the best

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