I'd like to know if this is possible. I want to run my 540 speakers on batteries or a rechargable accu. Im not handy or very technical, so I was hoping for there to be some nifty tools or converters out there? I can't exactly search it because I don't know what to look for, I tried the obvious terms but no luck. The 2 prong power into the extensio cord says 250 V 2.5 A.