Running on UPS power

Discussion in 'Mac Accessories' started by jjk454ss, Aug 2, 2010.

  1. jjk454ss macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #1
    I am getting a message several times a day that my mac mini is running on UPS power. The power is fine though. It seems like maybe I just got a bad UPS, but is there anything I should look at before I exchange it?
     
  2. waw74 macrumors 68030

    Joined:
    May 27, 2008
    #2
    you may just be experiencing a small under-voltage (brown-out). If you have a window AC or something that draws a lot when it starts up (like a fridge) it can cause the UPS to kick in.

    also in summer voltages tend to be a bit lower, due to everyone's higher power use. so if it's something you don't normally see happen, it could just be that it's warm out, and you're down a couple volts to start off. so when you drop a couple more, the ups kicks in.

    do the lights dim a bit when it happens? would have to be a normal light bulb to really see a difference.
     
  3. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #3
    OK, thanks. That makes sense, the voltage is at 118-119, so not real low. I am normally not using the mini when it happens, the dialog boxes are just up when I do go to use it. I'll keep an eye on it and see if I can't confirm that its a low voltage issue. It may be that it does it when my air kicks on or something. Thanks for the help.
     
  4. fhall1 macrumors 68040

    fhall1

    Joined:
    Dec 18, 2007
    Location:
    (Central) NY State of mind
    #4
    Is the message popping up via Growl? I recently upgraded my Tripp-lite 750VA UPS to a Cyberpower 1350 VA model. I never plugged the USB cable from the Tripp-lite into my Mac (I relied on manual powerdown if there was a power outage). With the Cyberpower, since I was on the floor anyway, I hooked up the USB cable. Growl reports me as being on USB power now. However, I think that it's Growl's way of saying you have a UPS connected, since I'm obviously on line power.
     
  5. jjk454ss thread starter macrumors 601

    jjk454ss

    Joined:
    Jul 10, 2008
    #5
    No, it's not Growl, it's an osx thing. Thanks
     

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