Welcome Roscoe!
I have Eee PC little laptop with 10" LED screen so battery should last anywhere from 6-9 hours depending on use. But in this cold weather it lasts less than that.
Those starters/power supplies come with cigarette lighter socket. What do I need to plug my laptop in it? Or do I just use 240V outlet and plug the charger in it that comes with laptop? I read a lot about it on the net, but everyone got different ideas. Since many members here have experience with it I would like to hear from them.
I found this on Jaycar website
50W In-Car Mini Notebook Power Supply:
http://www.jaycar.com.au/productView...r&form=KEYWORD
thanks
bob