I bought a 300w "PortaWattz" (I think) unit at West Marine for about $75
last year.  I noticed recently that they have them at Costco for $35.
(typical!)  :-)

It is made from blue aluminum, and will run a pair of laptops all day long
off my aux batteries.

As to digital camera battery recharging, I suggest you look into the Maha
unit - it comes with AC and 12v adapter, plus 8 NiMh batteries rated at 1550
mAH

http://www.epc-online.com/maha_battery_chargers.html

I'm planning on getting one soon.  (As soon as I blow through the 24-pack of
Duracells I bought at Costco)  :-)

Brent Christensen
'89 GL Syncro Westy "Klaus"
Santa Barbara, CA
"