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by lelag 2214 days ago
You got it cheap but that idle computer must have costed you about an extra hundred buck in electricity over 4 years...
1 comments

The last 29 days, I just checked, I am paying 19 CAD for 143kWh. https://forums.macrumors.com/attachments/screen-shot-2016-10... shows 4W but perhaps it's 4.6W because of the brick efficiency. Since this thing was running 24-7, that's 29*24=696 hours so we are looking at 3171 Wh or 3kWh. At the end, (4/.878 x 696/1000)/143 x 19 x 4 x 365/29=21.210 so we that's 21 bucks and change.

4/.878 watts

696 hours

1000 convert to kilowatt

per current monthly kilowatt to get to the fraction of consumption

times the cost of monthly consumption

the replacement battery and the guy doing the replacement, yeah that was a hundred alas. Oh well.

times four years

times the fraction of a year that monthly consumption comes to