Okay, hi folks been a while since I posted anything - this is because my 860 pretty much does everything I want it to do and never goes wrong :-)
I also own a sony psp and a tomtom go gps navigation unit.
And what you may or may not realise is that all three gadgets have exactly the same power requirements.
ie: ANY DEVICE that will charge a psp will charge a zaurus and a tomtom go :-)
Want a complete travel charging kit for your zaurus ? get a psp travel kit. Generally includes usb charging cable, car charger and worldwide mains adaptor for around $20 - £15.
Want an extended battery life for your Z for flights etc. get a 3800mah psp external battery pack for about £12 - $18 (or there abouts) it'll velcro to the back of the zaurus no problem.
One word of warning.
I recently purchased a logic 3 psp solar charger - specifically for charging my zaurus if I go somewhere out of the way on holiday and I want to load it up with books. It also had an integral 1800 mah battery. To fastcharge the internal battery it said to plug it directly into the psp mains charger. which I did and the solar charger promptly melted. I can't see this being a universal problem - but be warned if you buy one of these, the first time you plug it into mains - leave it on something non-flammable :-)
So I still don't know if this gadget would have worked as it melted before I got the chance to try it out :-(
Anyway that's the gist of the post. want power for a zaurus or a tomtom go - get the psp kit :-)