As far as I can tell, Kobo's battery meter has significant drift based on your charging habits. If you try to follow the guidance of keeping the battery between 25 - 75%, the meter starts to think that 75% charged is 100% charged, because it never goes above that point. I now have a > 20% disparity between what the battery icon reports and what the voltage indicates about the charge level. I'll try doing a full charge next time to see if I can get them to line up again.
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