For portable DVD players there is a feature on most portable DVD players. The feature as a way to connect any source such as a digital cable box, VCR and also any other audio video source. Well if you have that on your portable DVD player since every DVD player has that feature even the newer ones. You should be able to chuck out that old black and white set and connect a battery operated digital converter box such as model number : Winegard RC-DT09A. This converter box/DVD player configuration is the best way to get your news and weather during a emergency. Soon there will be power sources for DVD players and converter box power supplies to power up certain electronic devices.
Electronics Engineers : Please come out with power supply that would be better than
6 D Cell Batteries, usually something smaller around 6 AA batteries for converter boxes.
Also I have a AC power supply that uses a 9 volt and 1.5 Amp power supply.