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Bad J1772 adapter or other problem

Discussion in 'Model S: Battery & Charging' started by Calisun, Sep 30, 2013.

  1. Calisun

    Calisun Member

    Joined:
    Apr 25, 2013
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    Location:
    Bay Area, CA
    I was wondering if anyone else has experienced this and can help dignose why my charge rates aren't at the right level. My work has recently installed the new Chargepoint chargers for us to use and for the first few weeks charging was at 20 miles per hour. The last friday I had trouble establising a good connection and get 205v but only 9A. I unplugged the adapter and reconnected it and it went charged at full current. Today I've tried reattching the adpter and moving to different charging stations but it now seems to make no difference.

    I suspect this might be something wrong with the J1772 adapter not establishing a good connection, has anyone else experienced similar?
     
  2. efusco

    efusco Moderator - Model S & X forums

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    Have you tried manually dialing up the amperage on the in car display? Perhaps it got bumped down on accident?
     
  3. gg_got_a_tesla

    gg_got_a_tesla Model S: VIN P65513, Model 3 Res Holder

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    It does look like a busted adapter. My adapter failed on me entirely and Tesla replaced it under warranty.
     
  4. Calisun

    Calisun Member

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    Bay Area, CA
    Thanks for the replies. I work with Kipernicus and he thought it might be that I was parking front first and the cord was pulling and making the adapter loose contact. I'll give that a try before replacing it.

    efusco,
    When it was low amps it would not allow it to be raised in the UI and capped it at 8 amps.
     
  5. steve841

    steve841 Active Member

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    Are there more than one user at a time? That would cause a drop..
     
  6. Doug_G

    Doug_G Lead Moderator

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    If the pilot signal pin doesn't engage, the car defaults back to minimum current (9A) for safety reasons. So yes you're probably right about the adapter. (Tesla was replacing old adapters whose part number ends in an "A" with ones that end with a "B", because they often didn't fit right.)
     
  7. dsmith2189

    dsmith2189 Active Member

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    They replaced mine (an "A") when the glue holding it together failed. (and the adapter still worked:smile:)
     

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