Question about Fellowes 99052 UPS 425VA Battery Backup (BP99052) UPS System

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Fellowes 425AP wont power up

The system was working fine. We moved, and after moving the unit won't power up at all. I checked the battery and it only has 1.9 Volts. There is power going into the system on the 120V side. I can press the power button but nothing happens. Not sure where the A/C Fuse is located at. Tested 2ea 30A Fuses and they are fine. Any help would be appreciated.

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When moving UPS batteries you need to unplug them from the unit internally to keep them from discharging completely. If the battery is beyond 2 y/o it is probably shot.

I would NOT replace the battery however in a "possibly-bad" unit. The cost of purchasing an entirely new unit (locally, without shipping cost) is just too inexpensive.

Posted on Jan 31, 2009

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The AC fuse holder is part of the black socket where the AC power cord plugs into the UPS. Unplug the power cord and you can pry out the fuesholder with a screwdriver.

This is likely not the problem, however. I am having the same problem, and all my fuese are good.

Posted on Oct 13, 2009

  • roger77b-a Oct 13, 2009

    Found this solution in another section - suspect this is likely the problem. I did notice that my battery is dead. It is not very old, so I am going to try to re-charge it with an auto battery charger.


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    The battery(s) have lost charge you need to replace it or re-charge it.
    this occurs alot in older UPS's, the batteries eventualy loose charge and if you switch your ups off or store it away for awhile it wont turn back on again that is because the battery power is used to fire a relay to boot up the UPS. You need to find were the battery(s) compartment is located more than likely if it is a small standing unit the battery(s) compartment should be located on the underside of the unit there should be a plate and a screw...remove the screw and plate...remove the battery or batteries, disconnect the Black and Red Terminals and take note of the voltage and the Amp hours, most small ups's have 1x 12V at 12Ah you need to either attempt to charge the battery(s) using a 12V battery charger or take it to a electronics store to get a replacement..if it is a fairly old battery or batteries i would suggest getting it replaced as the old battery(s) may hold enough charge to boot the unit but when the power goes out it will not support the output load!. if the ups is a rack mount unit you need to remove the front panel and underneath there is a tray with a small handle and four screws undo and pull it out and it will reveal 6 batteries linked up and stuck down the the tray...then using a screwdriver wedge off the batteries from the plate now remeber to take down the way they are connected as some are connected in series.The you need to either go and order some new ones or recharge the batteries!
    hope this helps,ben


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