Smart-UPS 2200XL

[Nick_EE]

Hello:

I have a 2200XL what has been running fine for years (with regular battery maintenance). I recently had to replace the batteries and did so, but on power up, the battery state LED bargraph bottom LED flashes for hours.  The next morning, the entire bar-graph was lit, so I thought I was out of the woods.  To insure the UPS  was working properly, I opened the AC breaker that feeds the UPS.  As soon as I opened the breaker, the battery state LED bargraph immediately dropped to the bottom LED and it was flashing accompanied with the warning beep.  The UPS was supplying the load just fine but did not wait for the batteries to die.  I did check the voltage of each bank and they were both 27.5 ±0.2V.  I did a 30 second load test on each bank of batteries and with a 1 Ohm load connected each bank was rock steady at 26.7V, that is close to 27 amps,  I couldn't do more than 30 seconds because the Ni-chrome wire was red hot and almost melting.

Does anyone have any ideas?  I have not connected a PC to the UPS - this unit has serial and USB ports.  I have lost the service manual so if anyone can help me with that as well, I would appreciate it!

Thanks, Nick

EE

rfe@sympatico.ca

[Nick_EE]

Hi, it's me again.  I am surprised that I cannot get any help with my question above.  Is there anyone that can help or at least point me in the direction of someone/someplace that can?

Thanks, Nick

rfe@sympatico.ca