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Thread: How long before battery dies?

  1. 04-26-2004, 08:39 AM #1
    NorthGaVigor
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    How long before battery dies?

    Does anyone have any idea on how long you could run a p3 system with 7" lcd using an Opus power supply connected to a 12V Car battery? Anyone tested this? I'm attempting a project at work is why i'm asking this. Cart-PC! for the warehouse. Would like to stay around 500.
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  2. 04-26-2004, 08:50 AM #2
    CRCinAU
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    500 hours????
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  3. 04-26-2004, 08:52 AM #3
    pimpJ
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    500, R U serious ?? that's crazy
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  4. 04-26-2004, 09:08 AM #4
    Jamez_Warner
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    assuming a 100Watt draw average:

    Optima yellow top: 65Ah

    100watts at 12v = 8.3amps

    = 7.83 hours.

    You would need 64 decent 12V batts to hold it for 500 hours !

    If you ran an epia with not much else you might get away with 15-20hours

    James
    www.digital-car.co.uk - The UK CarPC Forum
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  5. 04-26-2004, 09:16 AM #5
    Zip-Lock
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    The OPUS has a low battery cut off at 10.9 volts. Many factors go into the formula in determining now long it will take your specific battery to reach that point. Factors include: battery age, temperature, battery reserve capacity (size), load, other accessories, etc. However a good rule of thumb is about 1-2 hours. You won’t want to do this very often with a starting battery because they are designed for starting, not for discharge cycles like this.
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  6. 04-26-2004, 10:13 AM #6
    PORTUGAL
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    Is there a online store in Europe where i can buy optimas bateries, i cant find them in Portugal....
    Here in Portugal we have great weather, lots of brunnets, party a lot,drink a lot....
    http://img138.echo.cx/img138/896/bannerjoshua5dy.jpg
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  7. 04-26-2004, 10:23 AM #7
    NorthGaVigor
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    Exclamation

    Quote Originally Posted by pimpJ
    500, R U serious ?? that's crazy
    No No No!!! Sorry about that!


    $500 dollars for the entire project!! Funny how that little "$" (or lack thereof) can cause such confusion

    I would like to get somewhere around 5-6 HOURS of use daily. Any suggestions.

    Thanks for the responses!
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  8. 04-26-2004, 10:36 AM #8
    nl4jy
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    Quote Originally Posted by NorthGaVigor
    No No No!!! Sorry about that!


    $500 dollars for the entire project!! Funny how that little "$" (or lack thereof) can cause such confusion

    I would like to get somewhere around 5-6 HOURS of use daily. Any suggestions.

    Thanks for the responses!
    What type of cart are you refering to? A shopping cart??? a fork lift cart? I reckon you need a BIG battery to do this...$500?!? Is this including the battery??? Screen alone took half of your 500 budget.
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  9. 04-26-2004, 12:56 PM #9
    NorthGaVigor
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    Simple metal cart used in our warehouse for holding items.
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  10. 04-26-2004, 02:03 PM #10
    Jamez_Warner
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    yes you could probably get away with this - 2 car sized batts should manage that comfortably, can you handle that sort of weight however?
    www.digital-car.co.uk - The UK CarPC Forum
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