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Thread: The OPUS killed my battery

  1. #1
    Variable Bitrate
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    The OPUS killed my battery

    I thought it was supposed to have some sort of low voltage shutoff but I went out to start the car today and it was completely dead. The power locks didn't even work. Grrrrr. Any alternative wiring schemes for it?

  2. #2
    FLAC
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    It has an 11v cutoff.. it's saved me before.. How do you have it wired?
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  3. #3
    FLAC bosstone74's Avatar
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    I had that happen to me once before....I left the switch on and came back and there it was...a DEAD CAR...
    I remember once that someone on this bored sent his back because it did that and they fixed it or did something to it so it wouldn't happen again...I'm thinkin I might do that also...
    BossTone74

  4. #4
    Variable Bitrate
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    Hmm interesting I'm going to send an e-mail to opus right now. The way I have it wired is straight to the battery and the standby wired to the acc line.

  5. #5
    FLAC cproaudio's Avatar
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    Opus does have the low voltage protection. It senses the voltage and shut down the computer accordingly. The problem is when the computer is running, it draws anywhere from 7-15 amps. That could cause the voltage to drop anywhere between .2-.5 volts. When the battery voltage reaches 10.99volts for more than 10 seconds, opus procees with the shutsown. After the shut down, the voltage goes back up to 11.2 or some crap like that. Opus senses hey we got power and turns the PC on. It cycles through until the battery goes to 11 volts when the PC is off. Since you left the switch on, theres a .025a draw on the red wire. It may not seem alot but put that drain on a dying battery could kill it over night. Thats how you wake up to a dead battery if you leave the PC on. That's what happened to me. Don't believe that the battery will charge itself back up to a point to start the car. You cant create power nor destory power. You can only transform from 1 form of power to another form of power.
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  6. #6
    FLAC bosstone74's Avatar
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    so is there a fix for the problem,
    It states " Automatic shutdown at low battery voltage to protect the battery."
    Well when I wake up in the morning and my battery is drained, that's not protected if you ask me...

    not saying that this still isn't the BEST DC-DC power supply there is...but this is the only problem I have ever had with it... and it's partcially my fault...

    Has anyone sent theres in to get it fixed?
    BossTone74

  7. #7
    Maximum Bitrate freestyler's Avatar
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    Re: The OPUS killed my battery

    Originally posted by az1324
    I thought it was supposed to have some sort of low voltage shutoff but I went out to start the car today and it was completely dead. The power locks didn't even work. Grrrrr. Any alternative wiring schemes for it?
    when did you get yours? ones built around Dec 2002 and prior (you can check on the board if you open the case up) have a 10.5 I believe which was found to be too low, the new ones have the 11. If you have the 10.5 you can give Kris a call and send him yours and he'll upgrade it, at least he did mine.

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