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Thread: UPS revivals

  1. #1
    Join Date
    May 2007
    Kansas City, Missouri

    UPS revivals

    From time to time I come across an old computer UPS (uninterruptable power supply) at thrift shops or auctions that no longer worked for the previous owners. In almost every case, the original batteries had expired past their life and just need replacing. It amazes me how many folks will go buy a new UPS and get rid of the old one over something as simple as a battery replacement.

    I picked up two considerably large UPS's this week that had just this issue. I paid $10 each for them not even knowing the model numbers. Once I picked them up I did a little research and was a bit shocked at the price of the OEM replacement batteries, almost $70 for each UPS.

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    So I ended up pulling the batteries out of one of the units, it looked like the one shown above. Upon closer inspection I realized this was just two sealed batteries stuck head to head with stickers holding them in place. I figured I had nothing to lose, so I went ahead and pealed the stickers off. I found what I had suspected and also some battery model numbers/specs to reference.
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    I took those model numbers and found 4 comparable new batteries for $10 each online.
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    I swapped the batteries out tonight by simply removing those stickers, unplugging/plugging to the respective connections on the batteries, and taping them back together. Now I've got two refurbished UPS's that I'll be able to use, one on my security system, the other will power the new tankless water heater during power outages (which don't last long around here).
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    I also find that having a UPS on electronic equipment helps with surge protection and conditions the power to keep sensitive equipment from having a shorter life span.

    BTW, UPS's of this size sell for about $200 - $400 new today, I've only got $35 tied up in each of them and should get about 3 to 4 years before needing to replace batteries again.
    Last edited by Darren Wright; 09-12-2015 at 05:10 AM.

    To a small child, the perfect granddad is unafraid of big dogs and fierce storms but absolutely terrified of the word “boo.” – Robert Brault

  2. #2
    Join Date
    Oct 2006
    Tokyo Japan
    Really a great way to go, and you are recycling in the best possible way!
    The pessimist complains about the wind; the optimist expects it to change; the realist adjusts the sails.
    William Arthur Ward

  3. #3
    Join Date
    Dec 2006
    Yorktown, Virginia
    +1 on what Stu said.

  4. #4
    Join Date
    Oct 2006
    somewhere east of Queen Creek, AZ - South East of Phoenix
    I am convinced that a lot of stuff that could be recycled like your UPS systems goes to waste. A few years ago I needed a new battery for our house alarm system and when I checked local sources found that the "Battery store" wanted a small fortune for a little 12 volt battery. When I check on line I found the same battery for 1/10th the price. I called the store back to make sure the price quested was correct and the owner confirmed. I asked him how he could justify 1000% markup and he just hung up on me so i bought the online product. It arrived in 3 day and was a perfect match. I don't mind paying a reasonable markup since I understand that he has overhead but I find 10 times a little bit much. I now use "Battersharks" as my go to source for batteries. No affiliation just a happy customer.
    "There’s a lot of work being done today that doesn’t have any soul in it. The technique may be the utmost perfection, yet it is lifeless. It doesn’t have a soul. I hope my furniture has a soul to it." - Sam Maloof
    The Pessimist complains about the wind; The Optimist expects it to change;The Realist adjusts the sails.~ William Arthur Ward

  5. #5
    Join Date
    Nov 2006
    London, Ontario
    Dang it, I know we've tossed some small UPS's at work also. (not me personally, some of the Profs). Never realized that you could buy a batter like that. I shall keep my eyes open!
    There's usually more than one way to do it... ........


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