While so far the unit is performing extremely well, a power tool drill had no problems with it. the only issue i have is, while reading the reviews i still purchased this inverter. its workin just fine, no problems, the issue is the FAN, its constantly on fan very noisy, so plan ahead, use the invert that wont wake the house up. personally if the fan was in the bedroom, id fall a sleep, white noise is great, but when workin it can be a problem. i am considering changing the fan out with a low noise fan for a pc, i believe a pc fan would reduse the sound tremendously
Im now waiting to see if it performs well, Again this IS a modified SINE wave, and for me i dont need anything special, though for extra safety i've added a trip switch for my PC.
currently running a 1 day full battery (2 x 12v 100ah leadacid) and so far with 2 monitors, audio amp, a mixer, 2 laptops 1 led lamp and a phone charin from its ports, totalled about 260w and the battery has so far kept up and runnin and looseing 0.1v every hour... so so far really impressed. BUT time will tell
I use this with a 300watt Solar System, (and plan to add another 300watts) but for what it is, its performing extremely well.