12V battery group size

Discussion in 'Gen 4 Prius Main Forum' started by christiandflores, Nov 9, 2017.

  1. christiandflores

    christiandflores Junior Member

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    Does anyone know the group size for the battery on the Gen 4 Prius? I've had to jumpstart mine a couple times now.

    I know the warranty is still good, but I run a dashcam while parked. So I'd rather get an upgraded battery then sticking with OEM again.
     
  2. RCO

    RCO Senior Member

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    The 12 volt battery is constantly charged by the HV battery and should not require a top up unless the car has been left for more than a few weeks without running the engine. This begs the question, how are you using your car, or how far do you drive each day/week?
     
  3. bisco

    bisco cookie crumbler

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    you should be able to find the right size by going to the make of your choice, and plugging in the car info, unless the prime is too new.
     
  4. Prodigyplace

    Prodigyplace Senior Member

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    This is a Gen 4 thread.
    I would search for a 2016 Prius. I quickly searched a few and came up empty :(

    The Toyota part number appears to be 0054421171325 for about $200.
     
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  5. bisco

    bisco cookie crumbler

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    whoops!:oops:
     
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  6. bisco

    bisco cookie crumbler

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    i suppose it is in the service manual for 15 bucks. try calling a parts department.
     
  7. Mendel Leisk

    Mendel Leisk 'Orrible Oracle

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    Running an accessory when the car is parked, is asking for trouble.
     
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  8. Prodigyplace

    Prodigyplace Senior Member

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    When not in READY, I agree.
    Leaving the car in READY when unattended is asking for trouble not covered by insurance. :eek:
     
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  9. christiandflores

    christiandflores Junior Member

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    So does anybody actually know the size? Lol


    iPhone ?
     
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  10. Prodigyplace

    Prodigyplace Senior Member

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    Not without raising the hood & measuring. I have not seen it mentioned in Toyota's description.

    I just checked an old photo. The battery says 20HR 45Ah CCA 295A(EN)

    It looks to be 45 Amp-hours and 295 Cold Cranking Amps, if I read that correctly.

    Physical size and battery terminal size & placement are part of the battery group specification.

    Battery-Web.com - BCI Group Numbers, Dimensional Specifications, Polarity and Terminals
     
    #10 Prodigyplace, Nov 9, 2017
    Last edited: Nov 9, 2017
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  11. Mendel Leisk

    Mendel Leisk 'Orrible Oracle

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  12. David Beale

    David Beale Senior Member

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    Most "find your car battery" sites don't list the Prius battery. I found a "DIN 44L" on a British site.
     
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  13. Mendel Leisk

    Mendel Leisk 'Orrible Oracle

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    3rd gen yes, but 4th gen still early days? (n)
     
  14. Prodigyplace

    Prodigyplace Senior Member

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  15. bisco

    bisco cookie crumbler

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    i would call optima and have a discussion. even though they don't list the battery, they do list the prime. maybe they can help.
     
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  16. Prodigyplace

    Prodigyplace Senior Member

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    I would not be surprised if the Prime used the same 12V battery.
     
  17. Sam Spade

    Sam Spade Senior Member

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    The important part if that question was answered in his original post.

    Getting a battery with a higher capacity will likely only help a little bit. He really needs to find a different source of power for his camera.......or change his camera habits.
     
  18. alanclarkeau

    alanclarkeau Senior Member

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    If you do this regularly, you maybe could install a secondary battery. I did that when I had a VW Kombi and used it camping. I had an isolator for the fridge so it ran off the secondary battery, and meant I could always start the car, and once the car was running, it re-charged the fridge battery.

    You might even be able to use a Li-ION auxilary Phone battery (or 2 or 3) - they're getting bigger and cheaper?
     
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  19. christiandflores

    christiandflores Junior Member

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    I’m only interested in getting a larger battery. That’s the proper solution. Let’s keep the simplicity down. As I’ve read, the 12v factory battery on the Prius is on the wimpy side. I haven’t had any issues with my other cars while parked, so I’m not going to unhardwire it. The only difference is the battery capacity. Hence the interest in battery group


    iPhone ?
     
  20. Prodigyplace

    Prodigyplace Senior Member

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    When you are sitting in the car parked just leave it in READY mode. The 12V battery is then kept charged by the large HV battery.
     
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