UPS + MBP + 12hr Bus Ride = Survival?

Discussion in 'Community Discussion' started by Tankgunk, Apr 3, 2008.

  1. Tankgunk macrumors regular

    Tankgunk

    Joined:
    Aug 2, 2007
    #1
    Background info: UPS = Uninterruptible Power Supply
    Obligatory wikipedia link.

    I am going to be forced to endure a 12 hour bus ride soon (thankfully on a comfortable charter bus), and I've been considering the battery life of my MBP. Not enough. So I was looking at external batteries, and I'd rather spend the whole time sleeping than spend that much, as I won't use it often. Then I had a brilliant idea; namely steal the UPS from under the computer desk temporarily, and deal with the bulk in return for at least doubling my battery life. I don't tend to think crazy things like this through, so does anyone here see a flaw in my plan (aside from bulkiness)? At least my UPS doesn't beep...
     
  2. jknight8907 macrumors 6502a

    jknight8907

    Joined:
    Jun 14, 2004
    Location:
    Hudson Valley NY
    #2
    How big of a battery does the UPS have? That would be the determining factor.
     
  3. Tankgunk thread starter macrumors regular

    Tankgunk

    Joined:
    Aug 2, 2007
    #3
    Doing the math and using kill-a-watt readings, probably enough for 3-4 hours of using a charged MBP.

    Back to the trip, it's really three trips. Two bus rides to get there, and one all the way back. So there's two 6 hour rides and a 12 hour ride, spread out over four days, so I could charge my UPS between. So I'm thinking that the only part of this trip I'd be stuck without my MBP would be the last half of the last ride. And being it a nice bus, we'll definitely be able to pop in a DVD.

    I'm mostly wondering if this use of a UPS as a one time thing is bad. I wouldn't think so, but I'm not really a battery expert.
     
  4. jknight8907 macrumors 6502a

    jknight8907

    Joined:
    Jun 14, 2004
    Location:
    Hudson Valley NY
    #4
    Is that 3-4 hours on top of the Macbook's life, or including it's life?

    As for the UPS' battery, it shouldn't harm it.
     
  5. tefleming macrumors 6502

    Joined:
    Oct 13, 2006
    Location:
    ATL
    #5
    You'd probably want to take the laptop battery out while using the UPS. Otherwise, some of the juice will go to powering the laptop and some to charging the laptop battery.
     
  6. Abstract macrumors Penryn

    Abstract

    Joined:
    Dec 27, 2002
    Location:
    Location Location Location
    #6
    If your bus is that nice, I don't see the point. Watch a DVD on the bus, play with your MBP for awhile, sleep awhile, and suck it up. ;)
     
  7. roland.g macrumors 603

    roland.g

    Joined:
    Apr 11, 2005
    Location:
    One mile up and soaring
    #7
    Look out the window.
    Really you can't disconnect for the time period that your battery has died that you are seriously considering this.

    You haven't been drinking draino recently have you?
     
  8. scotthayes macrumors 68000

    scotthayes

    Joined:
    Jun 6, 2007
    Location:
    Birmingham, England
    #8
    You could build a few of these and if you get hungry, you've got something to eat too :D
     

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