this post was submitted on 16 Feb 2024
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[โ€“] LazaroFilm@lemmy.world 6 points 9 months ago (1 children)

Charge it from a smart power supply from battery at 1 to 100% then it can show you the number of mah/h it took to charge it.

I have this power supply which also has USB-C https://a.aliexpress.com/_mrChiQ6

[โ€“] ji17br@lemmy.ml 6 points 9 months ago

Not sure how accurate this would be as charging is not 100% efficient. Also the amount of power the phone uses while charging would have to be taken into account as well.