This is old news. Just FYI.
On the Memorial Day weekend, my friend and I attended Fanime and set up a table to sell art. We knew we probably weren’t going to sell much, so we didn’t want to make a whole lot of prints in advance, especially on nice paper and at high quality (Printer ink is supposedly worth it’s weight in gold, and I’m sure photo paper isn’t that much cheaper).
So we decided to drag my HP Deskjet 6980 along and print art on demand. This was a great idea in theory, but the folks at the con decided to charge $300 for access to the power grid. We thought that was just a little bit ridiculous as that amounts to about half of my monthly power bill (and there are now seven people living in my house).
Obviously the right answer to the problem was to bring our power supply in the form of a golf caddy battery. To power the printer off such a device required a 12v DC to 120v AC transformer and the Deskjet’s own 120v AC to 36v DC power brick wired together in series. This isn’t really the most efficient or elegant solution, but based off the 240WHr rating on the battery and the maximum power draw of 36W for the printer, we could have theoretically run the printer for about six hours straight. And that’s really something of a worst-case scenario.
So it turned out to be a pretty workable idea and we actually made close to double my original estimate (though really, it still isn’t much; we did make back the cost of our table, though). Score 0 for Fanime planners, score 1 for DIY. We’ll probably end up doing the same next year…
Oh yeah, Amol was there too. I didn’t see him -___-

