12v battery twist/disconnect gizmo that fits Prius battery post?

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by wsalopek, Jan 3, 2024.

  1. wsalopek

    wsalopek Junior Member

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    Hi folks...

    I just about ordered one of these - to use to disconnect the 12v battery when the Prius won't be started for several weeks. Of course I can loosen the cable and take it off, but I'd like an easier/quicker way. Almost ordered this one and then saw that it's too large for the 2015 Prius (plug-in) 12v battery post:



    The Prius post looks to be 13mm? Or just over a 1/2-inch? I've looked at Amazon and can't find one that fits - anyone have any luck finding one? Thanks...
     
    #1 wsalopek, Jan 3, 2024
  2. Air_Boss

    Air_Boss Senior Member

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    No embedded image but assume this is a quick disconnect or Anderson-type power connector? Why not? Well, you will lose many dashboard settings that rely on trickle feed from the 12V auxiliary battery. Instead, we use a battery maintainer on the 'fleet.'
     
    #2 Air_Boss, Jan 3, 2024
  3. wsalopek

    wsalopek Junior Member

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    Oops - this is the item (can't edit my original post?):

     
    #3 wsalopek, Jan 3, 2024
  4. Air_Boss

    Air_Boss Senior Member

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    Stealth imagery, again...
     
    #4 Air_Boss, Jan 3, 2024
  5. wsalopek

    wsalopek Junior Member

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    OK - get it now, no links allowed? (And also, looks like I can't PASTE an image??) 0

    And THEN I had a "problem uploading file" - no PNG's allowed?

    OK - nope - couldn't upload a JPG either.

    Good grief.
     
    #5 wsalopek, Jan 3, 2024
  6. Air_Boss

    Air_Boss Senior Member

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    Whatever the 12V auxiliary battery cut-off technique in use, unless you separately supply the dash with 12v, you will lose many dashboard settings that rely on power-off trickle feed from the 12V auxiliary battery.
     
    #6 Air_Boss, Jan 3, 2024
  7. rjparker

    rjparker Tu Humilde Sirviente

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    Rather than that answer (which will make it difficult to access with the hatch dead), I might disconnect the white cable in the engine fuse box. Easier to access later.

    IMG_3830.jpeg

    Personally, I just carry a Lithium jump pack under the driver’s seat.

    Finally everyone has trouble posting pics direct unless you use an online file server like Google drive or have the secret multistep process which requires JavaScript to be on then off then on with a desktop mode enabled on your iPhone.
     
    #7 rjparker, Jan 3, 2024
    Last edited: Jan 3, 2024
  8. wsalopek

    wsalopek Junior Member

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    Thanks very much - the white wire sounds like a winner for my use case.
     
    #8 wsalopek, Jan 3, 2024
  9. wsalopek

    wsalopek Junior Member

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    Thanks yeah - I guess I'll sacrifice those things for not having a dead battery upon my return to the car - but yes, definitely a downside. At the moment I just want a quick-and-dirty method to use in case of having to leave the car unexpectedly for a "long" time (couple weeks or more?).
     
    #9 wsalopek, Jan 3, 2024
  10. Air_Boss

    Air_Boss Senior Member

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    We’ve parked the car for a month and not had issues. Depends on beginning state of battery and amount of parasitic drain.
     
    #10 Air_Boss, Jan 3, 2024
  11. wsalopek

    wsalopek Junior Member

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    OK - yeah, in this last episode we were gone 3 months. And, I believe the 12v battery is the original from 2015, so it's time for a new one anyway I suppose. $177 at Costco.
     
    #11 wsalopek, Jan 3, 2024
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