V8troopie posted:

Actually, what you describe is more commonly known as a DC to DC CONVERTER.
Inverters only change DC to AC.
Inverters can be the cheaper option if one already has a mains power pack for the lappy, but there is no reason why an inverter MUST be used. Sometimes a DC to DC converter is kinder to the computer, especially if the computer is 'on' for a long time. Also, it has no lethal voltages.
It all depends on your intended use.

And, steer away from cig lighter style sockets for such an application. They are just not reliable enough, IMO, you want a socket that securely retains the plug while underway.
Klaus

Sand Man (SA) posted:

Klaus,

Not necessarily Mate.

For instance, the Dell Adapter does both converting and transforming.

You buy the one adapter which comes with both a 240 volt lead and a 12 volt lead for the supply side and then outputs the correct DC voltage to run the laptop and charge the internal battery. So you can plug it into a 240 volt AC outlet, a car's cigarette socket, or an aeroplane's unique DC supply socket.

Moose posted:

G'day Peter
Where would one be able to buy such an inverter?

Peter McGuckian (Member) posted:

Moose,

I got mine from a duty free shop overseas but I know they are available here.

Here's a link to the manufacturer:

For links: APCC

Peter McGuckian (Member) posted:

I should have added that the one I have is 240v output. Great for the notebook and battery charging.

Peter