12 volt G4 powerbook adapter?

[trihey@pnc.com.au (Lucas Trihey)]

I have a friend who's looking for a 12 volt adapter for a G4 powerbook
- 2 years ago i got an adapter from a guy in Melbourne for an old
iBook - it was an imported adapter unit (from the USA) with good
cooling fins - I only used it a couple of times but it was great (we
ran it off a motorbike battery on a climb of Kilimanjaro in Africa).

I can't remember the name of the unit but my friend is trying to find
something in Australia because he's leaving on a trip next week. The
local distributor basically operated out of his home I think (?). Once
i read the brand name I know that I'll remember it :) Any help
gratefully received! Lucas.