Originally posted by: Navid
I have never had a Tripplite and cannot advise.
But, I find it promising that they have openly described how their Automatic Voltage Regulation (AVR) functions.
http://www.tripplite.com/shared/pdf/spec/tlspec_3071.pdf
From the top of page 3:
Direct Pass through: Voltages of 105V and greater are passed through to connected equipment unchanged.
Often, you see posts here that claim that a particular UPS is great for filtering the line voltage and providing a clean voltage to the equipment because it has AVR. While often, AVR operates exactly as described here. No filtering as long as the voltage is above 105V, in this case. So, if the voltage keeps going up and down from 110 to 130, that is exactly what will be passed to the connected equipment.
Looking at this runtime chart,
http://www.tripplite.com/shared/pdf/runtime/SMART1000LCD.pdf, you can see that this Tripplite runs for 12 minutes on battery when loaded by 280W. While the APC that I linked (BE750BB) runs for 12 minutes when loaded by 300W. So, I would still go for that APC.