Why you should NOT play the radio, with engine OFF !
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Cadillac STS Forum - 2005 through 2012 Discussion, Why you should NOT play the radio, with engine OFF ! in Past Cadillac Vehicle Discussion; This is a decision ONLY you make, But based on this information, at least you know, the specs. It draws ...
  1. #1
    Subsailor613's Avatar
    Subsailor613 is offline Cadillac Owners Fanatic
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    Cool Why you should NOT play the radio, with engine OFF !

    This is a decision ONLY you make, But based on this information,
    at least you know, the specs.
    It draws about 10 amps with the engine OFF,
    there is other stuff it powers.
    So use the radio wisely.
    Here is a pic of my DC Clamp On meter !
    Happy Motoring.

    Cadillac Amps8.jpg
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    Onalaska's Avatar
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    Re: Why you should NOT play the radio, with engine OFF !

    Wow! No wonder my battery runs Dow so quickly

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    curtc's Avatar
    curtc is offline OCD - Obsessive Cadillac Disorder
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    Re: Why you should NOT play the radio, with engine OFF !

    The STS is an amperage eating monster...I won't dare let it sit longer than 5 minutes ON without the engine running.
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    mjcaddy's Avatar
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    Re: Why you should NOT play the radio, with engine OFF !

    Quote Originally Posted by curtc View Post
    The STS is an amperage eating monster...I won't dare let it sit longer than 5 minutes ON without the engine running.
    I think 5 minutes is when the car shut off the acc power after turning the car off too (not in acc mode). so yeah that monster screen eats a lot of power.

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    JimmyH is offline Cadillac Owners 10000+ Posts
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    Re: Why you should NOT play the radio, with engine OFF !

    My CTS-V battery would go dead if the car sat more than 2 weeks or so without being run. Even without the radio on these cars pull some serious power.

  7. #6
    curtc's Avatar
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    Re: Why you should NOT play the radio, with engine OFF !

    Quote Originally Posted by JimmyH View Post
    My CTS-V battery would go dead if the car sat more than 2 weeks or so without being run. Even without the radio on these cars pull some serious power.
    Same with my 2001 STS. When I had it up for sale after buying my CTS back in 2011 I had to start it at least once a week and drive it for a good 15m or so to keep the battery from dying completely...
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    scott9001 is offline Cadillac Owners Fanatic
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    Re: Why you should NOT play the radio, with engine OFF !

    I went to the drive in about two moths ago watched both movies never shut the screen off or anything just on accessory mode and no dead battery for this guy

  9. #8
    Guy.Seminerio is online now Cadillac Owners Connoisseur
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    Re: Why you should NOT play the radio, with engine OFF !

    Every time I finish washing the car (about weekly) I park it in the garage and play music with the car in acc mode while drying it off. Every time I treat the leather interior, (about twice a month) same deal. I have to reengage acc mode about 2-4 times on each occasion because the 10 minutes runs out. I guess I'm playing with fire but no signs of problems yet.

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    EChas3's Avatar
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    Re: Why you should NOT play the radio, with engine OFF !

    Sub - Are you sure you didn't have the defroster on? More seriously, I do understand the importance of turning off HVAC, lights, etc

    I had no idea it was drawing that much. I figured 2 or 3, even 5 amps for half an hour is no big deal for a good battery. Drawing 10 amps is still only .12 KVA, but a starting battery isn't designed for a constant draw especially as it becomes drained.

  11. #10
    Charles Warren's Avatar
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    Re: Why you should NOT play the radio, with engine OFF !

    I don't have the sts oem sized battery 850 cca for me

  12. #11
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    1BadCadSTS is offline Cadillac Owners Connoisseur
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    Optima red here. Never had any issues.

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    ITSQUIK's Avatar
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    Optima Yellow in mine. No problems & I use ACC all the time when I'm cleaning.

    ----------

    Quote Originally Posted by ITSQUIK
    Optima Yellow in mine. No problems & I use ACC all the time when I'm cleaning.
    I did forget to mention that I did have to customize the battery tray to make it fit properly though.

  14. #13
    EChas3's Avatar
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    Re: Why you should NOT play the radio, with engine OFF !

    Quik - What Type? Optima 78 (model -1078 has no top posts) seems to fit OK.

  15. #14
    ITSQUIK's Avatar
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    Quote Originally Posted by EChas3
    Quik - What Type? Optima 78 (model -1078 has no top posts) seems to fit OK.
    I have the 1 with Top & Side posts. I'll take a pic in the am & post it. I use the top for all my Audio & extras with a custom made fuse block & distribution block & still retained the factory side connections.

  16. #15
    EChas3's Avatar
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    Re: Why you should NOT play the radio, with engine OFF !

    Yes, I understand that would require some modifications. 800 CCA kicks butt compared to the 540 CCA of the OEM Type 101.

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