Question about NEC APC Smart-UPS 1400 (050-01803-000) UPS System

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APC Smart UPS 1400

My UPS is not reading the battery, when ever the power goe's it keep beeping stright showing me that the battery is low, i have two 13 plate car battery connect to it, thats why i know the battery is fully charge, also i keep a marine battery charger connect to keep maintain it it still stays up for hours. under about 40% load, it's working ok apart from that. can anyone help me to correct this problem.

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  • msforbs Feb 04, 2009

    Internal battery died, so i replace them with external car battery, for longer life.

  • amansoor Apr 03, 2009

    Yes i have same problem with my APC smart-UPS 1400.as its internal batteries was dead so i connected external battery pack for long life it was ok for 1 year now it started problem like continuous alarming of low battery even on 20% load. i have checked my batteries with other devices its working ok and i sure that battery pack is still in good condition. Secondly UPS still work 1 to 2 hrs on 20 % load with these old batteries but with low battery alarm. Need to know how to solve this problem.

  • pob1976 May 11, 2010

    Does the ups have internal batteries? if so does the ups read these ok?

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The sealed lead acid batteries in them have come down a lot in price now, see here for one on batterytrader, 12v 7ah sealed lead acid battery

Posted on Jul 20, 2009

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How to extract batteries from an APC Smart UPS 1400


greg milton, Hi, Did you get the top cover off of the "1400" battery back-up? How old were the batteries in the unit? My APC 1250 has two 12v 18ah units inside. It's best to replace batteries every 3 to 5 years! 12fixlouie

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1 Answer

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Batteries in the UPS typically last 3 to 5 years and it depends upon several factors. including the number of times the unit must go on battery power and environmental conditions. There are usually several batteries in the UPS and while the battery voltage may show 13 volts, this may only be a float charge/voltage and a true indication of the battery voltage and condition requires the batteries to be tested under a load. There maybe one battery in a set of batteries that is faulty and causes the whole battery system to fail and indicate a battery fault.
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Better late than never...

The older Smart UPS models are peculiar in the way that they appear dead (will not power on) if the battery is completely bad.

Replace the battery, and the UPS should come back to life.

Jul 01, 2008 | NEC APC Smart-UPS 1400 (050-01803-000) UPS...

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That meens that UPS dont have battery power for minimum time (2min). Unplug some devices so UPS load need to drop below 25% and lets UPS recharge battery

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This is the battery you need to replace http://www.batterywholesale.com/battery-store/proddetail.html?prodID=619
Ther are a few places to get one

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