TL/TR: sometimes board reports 30% charge but runs for 6+ miles AND sometimes board reports full charge but only get 3 miles.
I've been emailing Future Motion about these issues for the past month and a half. They are very slow to respond and my board has become unusable, so I'd love any help you all can provide.
A few months ago, my OW+ stopped charging to 100%. The brick led would switch to green, but the app would report 98-99% charge. This wasn't a huge issue until one day it wouldn't charge past 30%. I emailed Future Motion who suggested I do a full drain (ride until pushback) and an extended charge (24-48 hours). This fixes the issue for 2 charges after a full drain. I.e. after a drain I can charge the board to 100% twice before the board stops fully charging again. I also noticed that despite only having 30% charge, I can ride the board until 100%+ usage before it dies.
The other issue I've started to have is the board sometimes (3 times so far) has a drastically reduced range. My commute is 3.2 miles. Twice I've just barely made it to work before the board ran out of juice, and once it died a quarter mile away. Each of these rides were from a 98-100% charge.
Today I pulled the board off the charger after 12 hours and it reported 30%. I decided to ride it, and only got 2 miles (which is different than other times I've ridden it from a 30% charge). I got a Lyft into work, fully drained the board, and recharged it to 100%. I took it for a ride at lunch, and about a mile into my ride the board started giving me multiple overcharge alerts, while the board was reporting 94%.
There is clearly something wrong with the battery, the way the battery charge is measured, or both. If it was just one problem, I could deal with it. If the board always fully charged and the battery just read the wrong charge, I could just judge by the usage. Or if the battery always reported the correct charge, I could do a full drain and recharge when necessary. Because I have both issues, I cannot trust the battery level or that it will make it on my commute to work.
Does anyone have any recommendations on either a) how to get Future Motion to fix their board, b) how to replace the battery myself or c) any other ideas that will get by board running again. Thanks!