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current draw and source of 12 volt power

Discussion in 'Gen 2 Prius Audio and Electronics' started by redfxrs, Feb 5, 2007.

  1. redfxrs

    redfxrs Junior Member

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    I'm doing the 12v front power outlet mod on my 06 to have unswitched power available for my Sirius S50 (has the ability to record up to 50 hours...like a tivo). My question is do I have to worry about a power drain or is it such a negligible amount if left on overnight. Does the 12v plug draw from the traditional battery or the hybrid ones? What happens in a similar scenario like when a dome light is left on for hours?
     
    #1 redfxrs, Feb 5, 2007
  2. Bill Merchant

    Bill Merchant absit invidia

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    Unless your car is in READY mode, ready to drive, you are using the little 12V battery. The HV battery is completely disconnected when you power off. When you put the car in READY mode, it charges the 12V battery.

    I have no idea how much power your sat radio will draw, so I can't say how it will affect the 12V battery.

    Welcome to PriusChat!
     
    #2 Bill Merchant, Feb 6, 2007
  3. qbee42

    qbee42 My other car is a boat

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    <div class='quotetop'>QUOTE(Bill Merchant @ Feb 6 2007, 01:00 AM) [snapback]385931[/snapback]</div>
    But it is a very little 12v battery.

    Tom
     
    #3 qbee42, Feb 6, 2007
  4. redfxrs

    redfxrs Junior Member

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    #4 redfxrs, Feb 6, 2007
  5. tochatihu

    tochatihu Senior Member

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    S50 spec sheet says max power requirements is 1.5 amps at 5 volts, so 7.5 watts if the DC converter is 100% efficient. I would guess the worst case scenario is that it would discharge your Prius 12 v battery to a level where it would not boot up the car in 3 days. It could very well take a few days longer than that though, especially if its audio amp is not driving headphones the entire time. I guess you're going to find out!
     
    #5 tochatihu, Feb 6, 2007
  6. redfxrs

    redfxrs Junior Member

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    <div class='quotetop'>QUOTE(tochatihu @ Feb 6 2007, 12:37 PM) [snapback]386119[/snapback]</div>
    I didn't think it would draw that much but now I can relax and enjoy the 12 volt power mod. Thanks DAS!
     
    #6 redfxrs, Feb 6, 2007
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