Original factory 12V battery dead with zero warning

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by 9watts, Mar 21, 2025.

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  1. 9watts

    9watts Junior Member

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    Regarding that battery tender. Is that something I could hook up to the 12V battery in the back directly? Seems a bit easier? Or?
     
    #41 9watts, May 26, 2026 at 11:41 PM
  2. rjparker

    rjparker Tu Humilde Sirviente

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    Yes. Most of them have a simple quick disconnect to make using it easy especially if you don't drive every day.
     
    #42 rjparker, May 26, 2026 at 11:49 PM
    Last edited: May 27, 2026 at 12:01 AM
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  3. PriusV17

    PriusV17 Active Member

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    Consider hooking up a cable with SAE connector to 12v battery and then route it to behind the tail light cover for easy access to charge. While you're at it. Attach yourself an AirTag or Smart Tag 2 (Samsung) so you can track your car if lost or stolen (y) Sometimes your car might get towed way when you think it was stolen.

    sae-2.jpg

    prius-12v-charger-port.jpg
     
    #43 PriusV17, May 28, 2026 at 2:16 AM
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  4. Air_Boss

    Air_Boss Senior Member

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    I use CTEK battery conditioners on ‘the fleet’, with LED battery condition indicators integral to quick connects.
     
    #44 Air_Boss, May 28, 2026 at 7:47 AM
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