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The battery is not part of the circuit with these UPS'. These are what is called a line interactive UPS, they trickle charge the battery but it does not effect the UPS when swapping the battery. Plan a service window because it CAN go down. It shouldn't, but it does happen.

Hello Mick, The battery is hot swappable. However, given the age of the UPS, which I can tell by the product number, you may want to do it after hours just to be on the safe side. Should it go down? No. I used to work at APC, and I have had it happen to customers on the phone, esp with older...

Physically? Just pull it out, but I wouldn't recommend it. If you have it lit, you have to get the voltage within a normal range. You can change the sensitivity on the UPS lower, and that may help if your area has normally higher than 120V.

What cable is it? 940-0024D?

Try reflashing it. You'd be surprised how many times that works.

Best way to do it is to set the computer to "last power state" in BIOS. At this point you would set the UPS to basically shut off after the computer does. As soon as power comes back on the outlets will refresh and it SHOULD reboot. However, if the UPS never goes off it won't work. Your best...

Batts always on the bottom. Sometimes the cable won't even work if they are above.

One other way is to reset the constants on the unit. That basically tells it the correct measurements. You would have to call APC to find out what the right ones are. I wish I still had my sheet, but they can help with that. Tell em I sent ya. :) ~ Nathan Dunn

If your looking for a place, CBMI.com does repairs. They are the only APC certified repair shop if you have an APC unit.

It means it doesn't know it's runtime. You can do one of two things. You can go into the software and perform a "Runtime Calibration" or you can put about a 30% load on it and unplug the UPS until it drops the load. When you plug it back in it should be calibrated. It will drop anything...

Sounds good. Was just wondering the age of the UPS because the older they are the more you see stuff like the PCB fail. Looks like it was week 00 of 09. I worked at APC until about 4 months ago so if you need any more APC help just let me know.

So the battery bar graph is just showing nothing? I would start by unplugging it, unplugging the batts while it is unplugged from the wall. Hold down the off button you should hear a click inside of it. At this point plug the batts back in. Hold down the test button, you'll hear one beep then...

If it's an APC UPS, when power comes back on it's going to restart all the outlets, so no. You would have to do that manually as far as I know.

Correct me if I'm wrong, but most likely the reason your seeing the DNS server is because it is the DNS server in use. Most likely that's why your computer has a route to it. Can you narrow it down to any segments? As in, one part of the office but not the other? If so, can you ping from a...

The load indicator is in VA. Could be your not using 450 or 900 VA but less. Those LEDs don't perfectly match up to 20% either... it's like 24% give or take. I would check through the software if you want the most accurate reading. You would want to download Powerchute Business Edition from...

No. It's an in-rush current problem. Anything with a motor or motor like object will not work. This includes, ACs, Fridges, Vacuums. Also Laser Printers won't work because of the Laser's in-rush current needs.

Take everything off the UPS, turn it off, unplug it from the wall. Then hold down the off button for 5 seconds, you should hear a click sound. At that point plug it back in and turn it on. If it goes directly to that overload tone, the unit is hosed. At that point it is displaying an...

I used to work at APC and we always recommended 3-5x larger than the UPS you will be backing up. Another heads up, if your generator isn't generating perfect power, you may have problems with your total harmonic distortion. If you hear your unit clicking, and it's switching from battery to...

The other thing you can do if the UPS doesn't show the correct runtime after doing a software runtime calibration is a manual runtime calibration. You want the UPS to have as close to 30% load as it can. When the battery charge is full, unplug the UPS and let it drain until it drops. When you...

What you need is a UPS that does AVR(Automatic Voltage Regulation). Only high end Back-UPS are capable of this. Smart-UPS or an AV unit would be the better option, but much more pricey. If all your looking for is voltage regulation, you could get a voltage regulator. APC has a 600 and a...