UPS won't power on after being turned off

Discussion in 'Mac Accessories' started by imanidiot, Dec 20, 2013.

  1. imanidiot macrumors 6502a

    Joined:
    May 1, 2011
    Location:
    Denver, CO
    #1
    I have an APC UPS (ES 550G). If I turn it off for any reason, it will not power back up unless I unplug it, open it, disconnect the battery, and reconnect it. The software does't indicate anything wrong. I was about to order a replacement battery, but now I'm wondering if there is not a problem with the unit itself, and maybe I should replace it? Apparently power supply problems do happen with these units.

    Thanks.
     
  2. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #2
    How old is the power supply?

    I had a problem a year or so ago with an older one and found out that you can't even order replacement batteries for older units - they will give you credit towards a new unit instead.
     
  3. imanidiot thread starter macrumors 6502a

    Joined:
    May 1, 2011
    Location:
    Denver, CO
    #3
    The unit is 3 years old with the original battery and power supply, and it is still in production and replacement batteries are available. I just don't know whether I shouldn't just replace the unit. The problem has persisted for a year, and I haven't done anything about it simply because I rarely have occasion to shut it down. But when I do, as I said, I have to unplug it, open it, disconnect and reconnect the battery, then plug it back in, and then it will power-on. I do know that the typical projected lifespan for these batteries is about 3 years, but I'm not sure that the battery is the problem.
     
  4. cerberusss macrumors 6502a

    cerberusss

    Joined:
    Aug 25, 2013
    Location:
    The Netherlands
    #4
    Not much recourse except trying it out with a new set.

    You could try disconnecting them and putting a constant power source on the leads. With the same voltage as the batteries themselves give off. That way the unit will think the batteries are okay and fully charged.

    Problem is that these batteries themselves also could contain electronics. So if they have some firmware there as well, it's much more complicated than described above.
     
  5. old-wiz macrumors G3

    Joined:
    Mar 26, 2008
    Location:
    West Suburban Boston Ma
    #5
    I think I would replace it, if only to make sure your equipment is protected and not take chances. If you are using a UPS, you are trying to protect something important, so protecting it is probably worth the cost of replacing.
     
  6. smithrh macrumors 68020

    smithrh

    Joined:
    Feb 28, 2009
    #6
    If you have a store like BatteriesPlus around, you could try a new battery and see if that works. If it does, there you go, if not simply return it.

    If it's not the battery and the UPS is 3 years old, that might point to getting a new UPS.
     

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