If you smoked your Z, the information at the bottom of the page below may help you to get it working again:

http://www.tekprosystems.com/zaurus/internals.htm

I don't know if I'm on the right track, but at least it's a place to start if you have a smoked Z.

THat's a good link. I know more htan a few people here and at devnet have borked their zaurii with home made battery packes.