Today my blood glucose meter gave a low battery warning. This is the first time that has happened since I got it in October of 2006. I R efficient. (Also, already had new batteries on hand, so swapped 'em out.)
That's not impressive for a battery. Impressive is the save file battery in a copy of Zelda II NES that I own still works. The estimated life of those batteries was 3-5 years and many still work 20+ years later.
That would help, yes. Depending on idle down time, probably stretched you out by a year. I don't know what type of batteries the device uses.
Though by comparison, game cartridges use an "always on" circuit with the battery, so even at bare minimum voltage required to keep the memory "on" to hold the save data, more than 20 years is an accomplishment for a button-cell battery.
Last year I was getting wonky results and wondered if the batteries were getting low, so I got new ones. Then I read the manual (last resort, heh) and found that it'd give a warning when about 100 uses were left. So the batteries went in the cabinet until yesterday, when the icon popped up. They're the nickel-sized button batteries.
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Though by comparison, game cartridges use an "always on" circuit with the battery, so even at bare minimum voltage required to keep the memory "on" to hold the save data, more than 20 years is an accomplishment for a button-cell battery.
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