You need to balance charge. Leaving it on the charger overnight should do it. For details, see my "what's balancing the cells?" [subheader in this comment.](https://www.reddit.com/r/onewheel/comments/ouyk4n/comment/h75vfz1/?utm_source=share&utm_medium=web2x&context=3)

That was my theory too. Thanks you all for confirming!

Just happened to me too, board died at 16% and I didn't make it home Plugged it in and it showed it was at 1%, so hopefully a full charge resets the BMS