Originally Posted by dlouise37
I think there may be a little mis-understanding. What I'm proposing is to use the 220v source to just charge up the UPS. Once charged unplug it from the 220v. Next plug in my DVD player, camera... to the UPS(which is now running in "battery mode") to charge their batteries up from the clean 110v 60Hz output of the UPS.
I would say you would be much better off getting a decent quality transformer and saving yourself the hassle.
By the sounds of it, you blew up your DVD player using a low-quality voltage converter. Generally, voltage converters are neither rated for continuous usage nor for electronics. Anything that you buy at a luggage store will be designed to let you use a shaver or a hairdryer.
Spend a bit more (but still rather less than $100) and you can get a continuous/electronics rated transformer with 300W output, which will weigh in the 5lb range.
I would imagine you'd come out ahead on excess baggage fees alone.