CTL battery reserve in Casio Solar: not what I thought (in a good way)

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1. Watch and battery specks:

CTL1616F is the most dominant battery in Casio solar watches these days. Its power reserve is 13 mAh.
How long can it power the watch?

Casio manual gives 10 months of run time for GW5610.
22 months in battery saver mode (LCD off).

2. Battery power reserve based on the internet:

Image

1.2 uA = 13000/1.2 = 10833 hours or 15 months (which is better than the 10 months from the manual, but about…

CTL battery reserve in Casio Solar: not what I thought (in a good way)

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