I have two pc's at home that I game on.
They consume about 400W while gaming and I need a UPS that will be able to keep them online for as long as my external batteries will last (2x38AH 12V in series).
I have found the 2500VA model of this
http://www.pceups.com/products/inverters/xpl available at my local computer shop.
Since it is rated for 1500W, does that mean it can run a 100% duty cycle assuming I can run it from a 1500W DC power supply?
I will only realistically use 1/3 of its capacity now but maybe benefit from the extra power in the future.
Reason why I'm asking is because I've been modifying UPS's with internal batteries to accept my large 38AH batteries expecting much longer runtimes but they seem to shutdown way before the batteries voltage drops low enough or because they overheat.
The batteries should in theory last around 1:30 hours at a 400W load but what UPS will I need for this to work? should I just buy the one mentioned earlier even though the runtimes are not stated in the data sheet?