Simon Worby wrote:
> You're thinking along the right lines, to my mind, but an inverter to mains
> voltage and back to whatever the laptop wants (typically 15-18v DC) is
> wasteful. You can buy a power pack for laptops that will take power direct
> from 12v DC battery and convert it to the correct output for your laptop.
Unless someone has developed a new way to directly increase DC voltage,
such a power pack must include an inverter.
Whether inverting to a lower AC voltage and converting to DC is more
efficient than going up to 110v (here) and back down for DC, I don't know.
Moose
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