Have you had any luck using a car battery on your UPS?

Discussion in 'PC Hardware' started by dougwa, Oct 18, 2016.

  1. dougwa

    dougwa MDL Junior Member

    Mar 6, 2013
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    #1 dougwa, Oct 18, 2016
    Last edited: Oct 18, 2016
    I have a 450w APC UPS, maybe two-three years old. Brand new I pulled the little joke of a gel-cel out of it and wired it to a marine battery. After maybe a year the marine battery went bad, so I went to the Interstate battery wholesaler and grabbed another "blem" marine (deep discharge style) battery. It's a big one, putting out around 900 cca. Well, here it is a year later and it's bad. I just now put it on a "smart" charger which said it was 11% charged. I'm condition-charging it now and it may come back to life, but I wonder... is the APC UPS incompatible with lead-acid batteries? Or maybe I'm screwing myself buying 'blem' batteries? (i've had excellent success with them in auto use)
    EDIT: Also, maybe someone could recommend a better UPS on a budget? Something I could snap up used off Ebay maybe?
     
  2. Crime[Scene]

    Crime[Scene] MDL Novice

    Oct 12, 2016
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    #2 Crime[Scene], Oct 18, 2016
    Last edited: Oct 19, 2016
    Gel cells, wet cells and deep discharge all have different charging/maintenance requirements. Not matching the charger to the battery is always a disappointment.

    I'll bet that "little joke" of a gel-cell would be doing just fine had you left it alone.

    (And I'm not faulting you - I love to tinker with electronics myself. "Freedom isn't free", a popular quote. And sometimes tinkering isn't free). :)
     
  3. Michaela Joy

    Michaela Joy MDL Crazy Lady

    Jul 26, 2012
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  4. Crime[Scene]

    Crime[Scene] MDL Novice

    Oct 12, 2016
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    #5 Crime[Scene], Oct 19, 2016
    Last edited: Oct 19, 2016
    h**p://batteryuniversity.com/ is another great site about secondary (rechargeable) systems.

    As for the "Pro Power" batteries on eBay, I'd think twice or do a bunch of research first. There's more junk lead acid crap than you can imagine. IMHO, you're much better off with a quality product from the likes of Panasonic or Yuasa. Unfortunately, that quality is pricey.
     
  5. Joe C

    Joe C MDL Guru

    Jan 12, 2012
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    Using an automotive type of battery would produce hydrogen gas and sulfuric gasses too, not what you would want in an enclosed room
     
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  6. dougwa

    dougwa MDL Junior Member

    Mar 6, 2013
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    All good reading, THANKS! and... I did intend to put several SLA batteries in PARALLEL, it's just that I misspoke and said "series". Duh. lol
     
  7. Katzenfreund

    Katzenfreund MDL Expert

    Jul 15, 2016
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    Read the UPS instructions as to what kind of battery you can use.

    If you do use a car battery, make sure it's the sealed, maintenance-free type, in accordance with what Joe C said.
     
  8. dougwa

    dougwa MDL Junior Member

    Mar 6, 2013
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    Thank you, MS_User.
    Say, let me reverse my question. My riding lawn mower uses a small lead acid battery, and those go bad FAST. Is there any reason not to pop a gel cel in it? There'd be some bumps and vibration that it wouldn't see in UPS duty...
     
  9. MS_User

    MS_User MDL Guru

    Nov 30, 2014
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    i dont know if a gel cel will work in your lawn mower i think they use a totally different batteryo_O