Troubleshoot Smart-UPS 2000

[Anonymous user]

I have inherited a Smart-UPS 2000. ~2yrs ago, when last plugged in, it was working. Now, when I plug it in and try to start it up, absolutely nothing happens. Unfortunately, I did not inherit the manual and so I have no troubleshooting information. Tried to find a manual on-line, no luck. Can someone tell me how to determine whether or not this UPS unit is ultimately useable or destined for landfill. I don't want to do the latter and would be willing to buy new batteries if that is what is needed. But, I hesitate to do that without some confidence that 'dead batteries' may be the only problem with this system.

Thanks for any help that anyone can provide. Fred P

[Anonymous user]

User manual available here:
http://www.refurbups.com/Knowledge-Base/APC-Smart-UPS-Manual


The 2000 needs batteries to start. Using a voltmeter check for 48 to 52 volts at the battery box connector. If very low or no voltage you to need to replace the batteries. The SU2000 is a robust high quality ups and is worth fixing up.

Hope this helps
Scucci

[BillP]

What is the exact model on it? It should be on the white sticker on the unit some place. It could be just Smart UPS 2000 or AP2000.

The above poster is correct. This will need some good batteries in order to start. If you remove the batteries and then put them back in again (once the UPS is discharged) and try to start the UPS you may get a brief noise the first time and then nothing afterwards. This is also true with the "SU" models i.e. SU2200. The newer SUA models will flash the replace battery light but start up.

[Anonymous user · Accepted solution]

From what you describe, it sounds like you stored it unplugged for a long time. The type of batteries used in most UPSs is called lead acid. They lose the charge with time with the rate of loss being greater at higher temperature.

When you let them sit around and allow them to discharge too much, they're permanently damaged and you must replace them. If you don't see at least 50v at the battery terminals, consider them dead.

Lead price has gone up like copper, so batteries are considerably more costly now than a few years ago. Don't buy batteries until you actually need to use the UPS.