Technical Support Forum

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  Keeping you in the game
  • Onewheel Support  

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  My Pint shut down with a red indicator light on with 30% batteries left..what gives???
  • seucroch  

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  @seucroch most likely is the battery cells are out of balance. That means some cells have a higher state of charge than others. May be a single cell is at the bottom of the allowed voltage range and that will trigger the board to shutdown. Leave it on charge overnight and it will balance it's cells. If you already do that regularly then it may be the one or more cells are failing. Then your option is to try the milk crate process (search hint) to run the battery right down to the point all cells are flat. Then balance charge for at least 24hrs. Hope that improves it.
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  Reviving a destroyed Pint
  pint repair snapped • • Lia  

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  Been scouring the web for some rails for a bit and have yet to get a nibble on some rails. Seeing as the longer a project sits the more likely it is to remain that way (past experience lol) I'm going with the option of temporarily modelling the rails so I can at least get it all in one piece to test on the bench without resorting to clamping the hub axle to my bench. Looking for some accurate dimensions so I can CAD something up and print off. Thoughts? https://www.reddit.com/r/onewheel/comments/kzjjci/anyone_able_to_measure_accurately_the_dimensions/
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  Battery pint failure
  onewheel pint b battery failure • • nemo801  

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  @nemo801 the charger does what's called a top balance. I.e. charges cells to the top of the voltage range. Draining the battery by running it flat in a milk crate or similar does what's called a bottom balance (bottom of the voltage range). Don't do bottom balancing too often but it might help in this case. If the bottom balance doesn't fix it, a cell is dying and you should pursue a replacement battery under warranty.
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  Crash... What did I do wrong
  • JxRYE  

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  @stinkyface Correct. I have only had the board a month. The board is still stock. I called last night after work (5 est). FM rep apologized and said they were looking at my ticket and would get right back to me. I have not heard back yet.
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  Is my PINT broken?
  • NotSure  

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  @NotSure thanks for confirming, my experience was quite different. Glad yours was a non issue. I had a near full charge and ran at full milk crate speed for 10mins when I noticed the controller temp at 45 Celcius...😧. I was doing it to sand the powder coat off the wheel!
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  OW App adds Sunday mileage to last week's total???
  mileage totals • • RickN  

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  @blkwalnutgrwr certainly no big deal but I did a double take trying to figure out where yesterday's miles went.
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  Pint fault code 15
  • joshgrn  

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  Charged OW+ with XR charger by mistake
  • Dave Collins  

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  @lemur yes, I'm familiar with the CHI battery. nearly bought it. and then realized that... I can do better! maybe... hopefully. could blow my feet off. one way to find out.
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  maybe I voided my warranty but now I have 3 meters bluetooth range 😎 instead of it constantly dropping
  • kanguru007  

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  @kanguru007 Nice MOD. Report back on how the functionality/ durability goes after a few 100 miles. 👍 Might give this a try....
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  What is the standard battery cells voltage?
  • martimfog  

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  The behavior you describe is normal and experienced by most people. 4.18 across the board is a very common voltage. It means that your cells are starting their normal degradation process. Most XRs probably spend most of their lifetime in this state, as the 4.20 quickly drops to 4.18. I bought my XR used with like 200mi on it and all cells listed 4.18. Like 2,000mi in and they still all list 4.18 after a full charge. You probably just need to balance them a little better, leave the board plugged in overnight for a few nights in a row and you will likely be able to make it below 20% without issue again. Be aware that the drop-off for normal cell degradation is not symmetrical, and it mostly happens on the bottom end on NMC batteries. There will be a time where your XR dies at 10% every time and you need to plan to stop riding before getting down to 20%. Many people treat 20% as 0% on an XR and only ever plan to ride it down that far, with anything after 20% as their buffer in case of a miscalculation in how much they will use on a ride.
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  Looking to buy OneWheel Plus BMS board
  • simmy_binker  

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  Onewheel Plus - 1 battery cell low voltage
  • Rahul5454  

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  @Rahul5454 by cycling i mean discharge then recharge then repeat a few times. I get discharging the battery the normal way could be a problem as it will nose dive whenever that cell voltage drops below the low limit. If you have any other devices that run ~48v power. Maybe you could rig them up directly to a removed battery. Bit tricky, depends what you have around. Electric mower or scooter? I would avoid spinning the wheel unloaded in a crate. I tried that and found that my controller got very hot.
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  One Wheel XR won't turn on
  • Vietrider802  

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  @Vietrider802 No worries, had a look at the vid :) If you can't probe your multimetre into the small holes in the black and white controller connector you can probe off the output terminals on the XT60 BMS side. I took one of your pics and annotated the ones you want to probe in volt mode. It might be best to probe within the connector since the connectors on the PCB are covered in a layer of protective coating that helps prevent corrosion via moisture and small amounts of water. Be careful not to short the terminals or your probes when doing this else it could blow the BMS. As there are 2 XT60's I labelled the one the battery goes in which we can ignore, that should always have voltage present on it. The other connector should only present around 43.5v and 63v (depending on charge level) if the BMS is told to turn on via that blue wire being connected to ground. It's a toggle so it doesn't need to be held in, only touched to trip it on and off as per my vid. Presumably when you connect that blue pin to ground on the black and white connector it should put voltage across that XT60 thus proving the BMS fine and pointing towards an issue further up maybe with the switch itself.
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  Not turning on
  • amcnult1  

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  @lemur Thank you for this! I actually did what you wrote on this post, and connected the battery output to the controller. And It does turn on! The blue light was flashing, and I checked the app-it says to cycle charge the battery? I can't remember the exact wording, but would have to go back to it. But from what I've been reading, people said that even if it was the BMS, then it would have not shown the battery cells on the app. However, I can still see the battery cells on the battery app, so this leads me to believe it could be the power button, or something related to the controller? Not sure, but I appreciate you for sending the information regarding the BMS bypass!
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  This topic is deleted!
  • Vietrider802  

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  Why localization on the App ?
  • Sebasp1976  

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  @biell Thanks for taking time to reply - didn't know there was other apps out there and that's a good thing ;)
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  I got cannot start the new board
  • s1105ryu  

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  Were you able to get this issue fixed??
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  Pint vibration
  pint • • DeDe_F  

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  @stinkyface Sorry it took me so long to get back to you. I tried what you suggested and it turns out there's a small area on the tire that feels "flatter" than the rest. It's not a bump, on the contrary in fact, but it would still explain what I was describing. I'm surprised and a bit amazed that this can make a difference in the "road feel" :) Most of my miles are not on smooth blacktop here in Canada, far from it, so if it's not detrimental to the OW itself I can live with that tire. Thank you so much for helping me find an explanation!
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  XR constantly losing app connection?
  • suboba  

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  @flgliderpilot I'm interested in resurrecting this topic as well as I just purchased a used 4208 that's out of warranty and exploring my options. Not opposed to opening it up and do some soldering if that's the only way.