For one special case I'm looking for a way to powering Udoo uninterruptiblly. Which means using some kind of UPS. But I don't want to use computer UPS with two/three conversions (230V-12V-230V-12V). I'm looking for some "special" DC UPS like PowerWalker DC UPS 12V. But this one doesn't have regulated output and also power capacity is just a little to low (I need few amps on 12V). Running time from battery is not very important only few minutes to safely shutdown Udoo and all the peripherals. Does anyone knows something I could use?