Go to the Lind Electronics web sit and look at the options.
Check out this page:
http://www.lindelectronics.com/cgi-b...ters?industry=
These PSUs don't offer on/off switch controls but avoid using inverters with laptops. Implementing a simple relay control on/off to protect your car battery from draining is fairly simple.
Anyway I use one of the Lind units to power my Samsung Q1 (mounted on a transportable bracket that I move between my truck and the blue vett).
Neil