Thanks for the tips so far everyone!
I like to do a bit of observing through my 10" Dob while imaging, so between running dew heaters, laptop, cameras, mount, etc my whole kit is a bit of a power guzzler... especially when the ambient temps drops below 0.
Chris, those eBay prices do look much more affordable. I did notice that the company I originally linked to offers affordable padded aluminium cases for the panels ($89 for the folding 120W panels).
http://aussiebatteriessolar.com.au/s...-solar-panels/
David, yep I can definitely see why people run gennies. I think I'll be happier dealing with solar for the time being, but once I start class again I'll probably be busy enough for multi-night trips to be moot!
It'd be great to hear from anyone who has bought these types of travel kits - any traps to be wary of, etc.