Portable Battery Operated Television To Be Used During A Storm.com Portable TV Use After Digital Programming Switch?

Portable TV use after digital programming switch? - portable battery operated television to be used during a storm.com

How can I use the battery in my laptop run small black and white TV after the switch to digital broadcasts? I live in a rural area and the power goes out frequently. During a lightning storm or other disaster, that is my TV only way to see the impending weather or emergency instructions. Please help!