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Battery

Discussion in 'Model S' started by Greengolfer, Jun 12, 2018.

  1. Greengolfer

    Greengolfer Member

    Joined:
    Aug 12, 2016
    Messages:
    77
    Location:
    Highland,CA
    Relative newbe here, is it possible to reboot your battery? Lately me S won't charge all the way to the specified setting. An example - when charge is set to 80% car charges to 76-77%. Also 85% charge has dropped from 225-226 to 220-221.
    Anything I can do from home to maybe fix this?
    Thanks
     
  2. animorph

    animorph Member

    Joined:
    Apr 1, 2016
    Messages:
    929
    Location:
    Scottsdale, AZ
    I've never had my X charge to strange percents. If you charge early in the morning and it sits for a few hours before you check it the battery level might be down due to vampire losses. I think most likely at 76% to 77% is that the car did not actually charge at all. typically it will wait until it's about 3% lower than the charge limit before it will start to charge. That's all normal.

    The 85% charge drop could be normal battery degradation (how old is the car?). It could also be an imbalance (helped by charging close to 100%, but don't leave it sitting at 100% for long), or just a battery monitor estimation error (helped by nearly draining the battery and then filling it again). That should allow a more accurate estimate. There have also been firmware updates that have changed the battery level estimate that can cause a sudden drop in rated miles at specific percentage charges. That happened to my X in mid-2017, but is very infrequent. But if you are comparing RM from long ago to RM now that is a possibility.
     
  3. dennis_d

    dennis_d Member

    Joined:
    Jan 22, 2017
    Messages:
    232
    Location:
    CA
    It's not possible to reboot the battery , I think you need to visit service center and ask them to take a look at your problem, you can try to power cycle by remove 12v power and see if ti helps
     
  4. Lasttoy

    Lasttoy Member

    Joined:
    Mar 24, 2017
    Messages:
    603
    Location:
    St Augustine, Fl
    Always call fremont with a problem. Get in the record of the car.
    877.798.3752
    They have a new call center which i dont like. But we have to live with it.
     

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