MGE Ellipse 1200 Battery Arrangement

The SLA batteries in the MGE Ellipse 1200 UPS finally gave out. This picture shows how they’re arranged inside the box:

MGE Ellipse 1200 UPS - battery arrangement

MGE Ellipse 1200 UPS - battery arrangement

They’re 12 V 5 Ah batteries that are about 12 mm thinner than the garden variety 7 Ah batteries you can get everywhere; they’re not the same size as the generic 5 Ah batteries you might think would work. Of course, there’s not enough room inside the stylin’ case for the larger ones, either. I’m thinking of using fatter batteries anyway and putting a belly band around the gap. Maybe an external battery box with a chunky cable burrowing through a hole in the UPS case?

For what it’s worth, APC absorbed MGE a while ago (so the MGE website redirects to APC), got Borged by Schneider, then spat out MGE’s consumer grade UPS units to Eaton. You won’t find any of that documented anywhere, but here’s the response from APC after I didn’t find this UPS on their list:

I do apologize; when APC was acquired by Schneider Electric, the single phase UPS line that MGE once offered was sold to Eaton. Eaton now provides support for the MGE single-phase products. We do not sell batteries for these models. You will actually need to contact Eaton for further assistance regarding the MGE Ellipse units. You may click on the link below to go to Eaton’s website:

http://powerquality.eaton.com/Default.asp

The Eaton website does have a battery replacement for this one, but sporting the dreaded “Contact us for price” notation. Given that I got the UPS cheap-after-rebate, I’m thinking maybe this isn’t worth the effort.

  1. #1 by Andrew P on 2011-07-22 - 08:22

    Time to gut it and use the electronics to build a larger form-factor UPS!

  2. #2 by John Rehwinkel on 2011-07-22 - 08:34

    Looks like the style where the “heat sinks” are actually blocks of aluminum that don’t really transfer much heat to the air, just soak it up with their thermal mass. This puts a limit on the run time independent of the capacity of the batteries. You could, I suppose, build an external battery case, and put fans in where the original batteries were, but I think you’re probably right about it not being worth the effort.

    • #3 by Ed on 2011-07-22 - 09:49

      soak it up with their thermal mass

      That was my thought: the thing has a fairly short runtime at full load, which is when they’d have the most dissipation. No fans, no real ventilation, so those blocks are genuine heat sinks!

      The larger 12 V 7 Ah batteries are something like $20 from the usual sources, so it’s nigh onto a C-note to put the UPS back in operation… plus kludging up an external battery case. I’m dithering, but it’ll be cheaper to pick up a whole new UPS on sale; sort of like buying printers just to get the ink cartridges.

  3. #4 by Brent Crosby on 2011-07-22 - 10:56

    We have a bunch of these. They are pretty good:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16842111050

    • #5 by Ed on 2011-07-22 - 13:06

      Gotta wait for the closeout sale… thanks for the tip!

    • #6 by John Rehwinkel on 2011-07-22 - 13:33

      I’m leery of the Tripp-Lite brand after taking apart some dead ones and finding out they were trying to push a few dozen amps through some cheap 10-amp fuse clips. Lots of burn marks and melted insulation.

  4. #8 by Aki on 2011-07-22 - 11:00

    My APC CS 500 is 10 years old and the battery will be soon replaced. APC thinks my model is way too “Cro-Magnon”.

    “APC Trade-UPS is a 1-phase UPS program that offers new and existing customers the ability to trade-in older battery backup units for the most up to date 1-phase power protection models at discounted prices. Featuring a wide array of power protection solutions, APC will help you get the right battery backup and accessories for all your home or business computing needs.”

    http://buy.apc.com/commerce/storefronts/tradeups/tradein.aspx?mfcr=APC&StorefrontCode=apcetu&iSource=7&CountryCode=US&apcSKU=BK350X290&SerialNum=