My 2012 Timber Ridge came with a 32inch Jensen 12vdc television that has RCA input, HDMI, and VGA. It's connected to a Jensen surround sound system with DVD player that again runs off the batteries and seems to be fairly power efficient.
As others have mentioned, you can walk through sams club, Costco, best buy or whatever and look to see if the tv is powered by a wall wart. If it is, the power input is more than likely capable of being run directly off the battery, you just need to make up a power cable with the right connector on the end.
