So I just received my OW+ today. App showed 100% battery and 0 miles. I stepped on it for the first time and it went past level and hit the nose on the ground. As a original onewheel owner, I thought the usual "I may have not started it level" so I shut it off and back on again. Same thing happened every time. The app now showed 0% battery so I plugged it in. Less than 10 seconds later the charger light showed green and the app now showed 100%. I check Cell Voltages and they were WAY off. 3.38V for all of them except last one that showed 2.78V once the charger turned green. I sent a message out to FM support.
I will be leaving it charging overnight and probably more like 24+ hours to hopefully let the cells balance. I have looked through the forum and read the recommendations to ride it until it has 0% battery and then charge it for a long time. This, however, is not possible because it will abruptly shut off after riding for a brief (less than 30 seconds) period of time and will not power back on. I have no way to drain the battery. I have my doubts about it balancing because it has not showed even the smallest change over the past 2 hours charging but I will be patient.
I hope to hear back from FM soon but am also hoping someone might have input or experience with this issue.