Some of the lcd tvs use a "brick" poser supply to supply 12v DC to the tv, I have been doing this for 3 years w/o a problem for one of the sets. Some people will say this is a not a good idea, go to Sams and get an extened warranty, just incase. But now that I am getting ready for digital and the boxes are 110v AC will have to start using the inverter, but with 400 amps of 12v batteries this will not be a problem.