[ParabolStellavento]

Is there any way to use a macbook through an adaptor to a cigarette lighter in a vehicle etc.?

[mduell]

Yes, with an inverter: Newegg.com - TRIPP LITE PV150 150W Power Inverter - Retail

It's not the most efficient way to do it, but it works and it's the cheapest way to do it.

[peeb]

BTW this is not specific to the MB, any electrical equipment can be plugged in.

[Chaoticjoe]

Doesn't the Mag Safe Airline Adapter do that?

[mduell]

Originally Posted by Chaoticjoe 

Doesn't the Mag Safe Airline Adapter do that?

No. The MagSafe Airline Adapter is not compatible with automobile power ports.

And even if it was, it costs twice as much as an inverter.

[walkerjs]

Originally Posted by peeb 

BTW this is not specific to the MB, any electrical equipment can be plugged in.

Not a 1/4 HP mini ShopVac, a hair dryer or a coffee maker. At least with the inverter I have (300 watts.)

But yes, an inverter will power just about any Mac power brick. 80 watts (or is it 85?) for a MBP, 60 watts for a MB. Well within the capacities of the cheaper inverters.

[peeb]

Well, I had that coming I suppose...

[Bob Marley]

so do you have to buy a 65 watt one?

[C.A.T.S. CEO]

Originally Posted by Chaoticjoe 

Doesn't the Mag Safe Airline Adapter do that?

Well look at the name.... Mag Safe AIRLINE Adapter

[mduell]

Originally Posted by Bob Marley 

so do you have to buy a 65 watt one?

65 watt what?

You want to oversize the inverter compared to the computer's power adapter because 1) consumer electronics always overstate power abilities and 2) DC-AC conversion isn't 100% efficient.

[peeb]

You want an inverter that has a capacity higher than the thing(s) that you want to run on it.