| did a quick look-see/trawl via Google using the search words/string:|
Palm HP webos 2.1 battery
and found a few possibilities. Rather than I cherry pick... perhaps you will repeat my trawl using the same words and check them for your self ?here is one link that actually is search engine in itself; and I'm not entirely sure its's all that good; but perhaps check it out anyway?
Certainly go through a few of the Google pages before you perhaps give up...?
I'd also suggest eBay - using the same search words; there appear tp be possibilities on eBay...
Also try more than just eBay.com or eBay.co.uk; try some of the other regions too.