Apc Ups 1250 Battery
If you have computers or electronics that you don’t want to be killed by power fluctuations, it’s a good idea to have a UPS (Uninterruptible Power Supply) Backup. The battery in the UPS backup keeps your equipment running through blackouts our brownouts (reduced power).Most common mfg for UPS backup is APC.An APC UPS battery pack can be replaced for less than half the cost of replacing the backup power supply for your computer.A UPS battery is a sealed, 12v maintenance free battery that is identified by the amp hour rating or “ah”. Most UPS batteries are 12v but a few UPS Backups use 6v UPS batteries. Some APC UPS battery packs will have two 12v UPS batteries connected together to achieve longer back up power. A UPS battery should be replaced every two years and is a very simple task for most UPS units.Some APC UPS units have two 12v 7ah UPS batteries connected together via a docking station that is taped together. They can be more difficult to separate and replace but not impossible.Tools Required: Screwdriver with plastic or insulated handle to avoid contact with UPS battery terminals.Unplug APC UPS from wall.Locate UPS battery compartment.
Some APC UPS battery compartments will be located in the front panel while others are in the back. Loosen the connectors by gently wiggling them while pulling straight back from the battery terminal. Connect the UPS to new battery by gently pushing on to UPS battery terminals.
Always save any removed parts for re-installation. Small sparks at the battery cable and battery terminal connection are normalIt is unlawful to throw any UPS battery into the trash.
Apc 1250 Battery Backup
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I have an odd problem with my APC Smart-UPS 1250VA UPS. Its more than a few years old now, but it has worked flawlessly. Issue is this, the 'Replace Battery' LED is on, and the unit beeps like mad. I have replaced the batteries in it before, last time was about 2 years ago, but I don't recall this behavior with the old batteries.
Anyway, the batteries are 12 Volt, 17AH type. I have measured the voltage on both of them, and both are reading 13+ volts.
I wonder what could be the problem. If I press the test button, it goes on battery mode for a split second, the battery indicator drops down to zero, and it starts beeping and Replace Battery LED is on. I'm not sure what to do now, I don't want to order a new set of batteries only to find out that the unit is screwed. I'm thinking the batteries are able to hold voltage, but can't deliver under load.
Apc Ups 1250 Battery Diagram
Is there an easy way of load testing the batteries at home? I have a multimeter for testing, that's about all. Oh and I tried charging the batteries manually with a trickle charger, and still when they were put back in the UPS, same thing happened.If anyone has any suggestions, please let me know.Thanks in advance. Said by:I have measured the voltage on both of them, and both are reading 13+ volts. I wonder what could be the problem.When did you measure the 13+ volts? If it when the batteries are in the UPS and under charging voltage, what you are measuring is the UPS charging voltage, not the batteries.
Measure the voltage with the UPS unplugged and the batteries under the normal load of the computer. This will tell you much more. IF they cannot support the load for the normal amount of time, then they are ready to be replaced.Added note - Actually measuring the voltage across the batteries when the UPS is charging is a good indicator that the UPS is charging the batteries correctly. Should be around 13.2 to 13.5 volts for charging, depending on the type of battery. Said by:When did you measure the 13+ volts? If it when the batteries are in the UPS and under charging voltage, what you are measuring is the UPS charging voltage, not the batteries.
Measure the voltage with the UPS unplugged and the batteries under the normal load of the computer. This will tell you much more. IF they cannot support the load for the normal amount of time, then they are ready to be replaced.Added note - Actually measuring the voltage across the batteries when the UPS is charging is a good indicator that the UPS is charging the batteries correctly. Should be around 13.2 to 13.5 volts for charging, depending on the type of battery.I measured the 13v or so when the batteries were out of the UPS and unplugged.
When they are in the UPS, and the UPS is charging them, the voltage is a little over 14V on each battery. On a sidenote, I found my old UPS batteries that I never disposed of, and I put them in for a few hours to charge, and they actually dont fail the test, but the battery meter goes down pretty low. I think I just need new batteries, the UPS is fine I think.