Has calibrating the battery for 48 hours worked for anyone?.. Anyone?

  • I'm noticing shorter range and I think maybe my battery is out of wack. I'm thinking about doing the 48 hr calibration but I'm curious if anyone else has had success with this?

    I haven't seen anyone say yet, "Wow! my board is like new after leaving it plugged in for two days!"

  • On the Onewheel Owner Facebook group a guy left his board plugged in for 9 days while on vacation and I think his post was exactly that, lol. Also, FM apparently suggests whenever not in use, your board should remain plugged in.

  • @mtruby82 I've seen people have luck draining the board completely down to zero, turning it back on and run it down to nothing. Repeat a few times until it won't turn on at all, then charge it back up. This should help a bit however if your mileage has been drastically reduced, there are probably other factors.

    First things first:
    -what is your tire pressure? Low pressure will drastically reduce your mileage.

    • What is the temperature? Do you store your board in an unheated garage? Low temps will also drastically reduce your mileage.

  • @cbr-954rr I will check my pressure. As for the cold... I do ride a lot in the cold right now but not for more than a mile and my board is always warm before I ride as I charge it in the house. Do you run a stock Vega? and at what PSI?

  • @mtruby82 I have a Hoosier but to give you an idea how much pressure affects mileage, when I first put it on and could only inflate it to 15 psi without rubbing, id' be lucky to get 5 miles in warm conditions...after wearing the tire down for clearance at higher pressures (40 psi) I've gotten 6.5 miles. I'm also 6'-7" 230lbs so your mileage may vary.

  • @cbr-954rr Thanks for the info. I actually just bought a Burris treaded and am putting it on today. Looking forward to seeing how much it helps with range if at all.

  • @mtruby82

    Is your battery gage in the app out of sync with the board or is your mileage just low?

    What's your weight and tire pressure?

  • @skyman88 Not sure if its out of sync. I'm 160 riding a 20.5 PSI. Honestly I've been watching it the last couple days and its between 5-6 miles so I guess thats within range of what its supposed to be. It was low when I was just cruising around on carpet at work. maybe thats why.

  • @mtruby82

    Most likely. The beach and trails are awesome to ride but also eat battery.

  • Well in my situation I hate to report that an extended charge session did not help me out. My cells are all at about 3.32V versus my other board that sits at 3.50 - 3.52. FM recommended that I send it in so that is what I will do tomorrow. Luckily this is the off-season for me in Canada so if I ever had to part with it, this would be the ideal time. I can report back to see what FM will do to correct my board. My board had about 500-600 km logged on it.

  • I'm sure it works as long as you aren't scientific about measuring your range and battery life. Placebo effect goes a loooonggg way.

  • @gadgetrider

    Is that when the charger light is red or green? The app tells me I'm ready to ride but the light stays red. If you let the board continue to charge you should be near 3.6V when the charger light goes green.

    @makermarc The BMS does balance charge the cells. That's not a placebo. The board will favor the weaker cells, meaning if one has a lower voltage you'll get low battery pushback when that one cell is low, in order to protect it from running to an unsafe voltage.

  • @skyman88 I'd love to see any evidence of balancing taking more than a few hours. And that's being absurdly conservative. Nothing is happening 24hrs, 48hrs later other than FM being on reprieve from your constant emails.

  • @skyman88 My charger light goes to green and I still kept it plugged in. Board is on it's way back to FM now.

  • The FM guys on the OW podcast said if you leave it plugged in after your the green light comes on on your charger it trickle charges any cells below the others balancing them. The app responds to one cell so the reading might not be accurate if the cells aren't balanced. I didn't have issues with my board before I did this, but the app % is more accurate nearer 0 and 100 %. And in the app the cells all read exactly the same levels now

  • @makermarc

    So I’m at hour 48 for a balance charge per FM’s recommendation instead of sending my board in. I don’t have voltage plots or function of time data but simply laid out:

    30 min, 12 hours, 24 hours, 36 hours into charge I’d have the following, all cells at 3.62V and one at 3.60 and one at 3.64V. The cells at these levels would move around with time as it was charging. Today after work is the first time (48 hours in) that all cells are balanced and equal at 3.62V. I know this isn’t hard evidence but I’m also not the first person to go through this.

    @makermarc if your cells balance out on their own, agree that there is no benefit for you to do a long charge cycle.

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