Hello,
It just came to my attention this week that Amazon.com has discontinued sales of all cylindrical LI-ON batteries by all vendors, and this includes the 18650 EBL "white top" batteries that work so very well in the Vorpal Hexapod project.
I have found that the EBL 18650 batteries are available from Walmart Online and Ebay, and I'm trying to find other sources as well.
I have updated all our Wiki pages to suggest Walmart and Ebay as sources, and I've made a note about Amazon banning these batteries from sale. I've also asked EBL to give me some alternative sources.
-Steve P.