Unless the machine specifically handles this scenario, this can artificially wear the battery. Newer MacBooks handle this better with "intelligent" charging (I couldn't say for sure whether a 2012 MBA would have had this feature), but I don't know about other brands.
Yes... this is why I did use to take it out in old laptops while not moving from the desk.
With my thinkpad, I used to do:
sudo tlp setcharge 60 95 BAT0
This means: "start charging when level is 60% and stop charging when it reaches 90%"
But the real answer here is that batteries are essentially consumable parts. They won't last forever, and once it drops below holding ~80% of the original charge, it's worthwhile replacing it.
Indeed, probably for the extensive use I do, it's normal to do not pass the 3 or 4 years of good conditions.
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Yes... this is why I did use to take it out in old laptops while not moving from the desk.
With my thinkpad, I used to do:
This means: "start charging when level is 60% and stop charging when it reaches 90%"Indeed, probably for the extensive use I do, it's normal to do not pass the 3 or 4 years of good conditions.