Garry has a 2009 Prius, and was exhibiting some trepidation as to whether it would function with a UPS as the earlier model years did. Fortunately it worked out OK. He has a 6kVA Liebert power supply, which runs off a 192V battery, almost ideal for the Prius DC source. However, he found that it won't "cold start" and so still needs to get a set of normal batteries for it to be fully operational. Meanwhile, he is using the Prius to power a 2.2kW APC supply.
Expect an update when he sends me pictures of the full setup.
New 01 November 2008