MIO-RCC charging base power requirement

Need to find a power supply for a Mio charging base and cannot find out that information from the AMX website documentation. Could assume it's 12 volt ~300 ma like many phone chargers since it has similar lithium batteries in the Mio remote, but don't want to blow up something if the specs are different. And of course, like Jack Bauer in 24, I need it "NOW."