Sorry I haven't been able to post for a few days, we had a power outage for two days and I have been very busy at work. I don't think I will be able to add too much to the discussion regarding the differences in technology between the two mentioned chemistries. My understanding of the differences between the A123 and electrovaya's chemistry at the time they were in competition was that the A123 battery had more power density and the chemistry was safer under high power applications. Electrovaya at that time was having quality issues as well but there was no question their energy density was much better than A123. Electrovaya has dramatically improved their battery (particularly with regard to thermal issues) and I don't think these camparisons are applicable anymore. There are a couple of very important properties/patents that differentiate electrovaya's battery that should be highlighted. The first is the "superpolymer" which is their proprietary electrolyte that they say transports the lithium more efficiently than other batteries, this is the main reason they state it is a platform technology. So if a better anode or cathode is discovered they can incorporate it in their battery and it should perform well with their electrolyte. This link is a large file and has just a small article on electrovaya but it is interesting (page 60). http://www.scint.nl/docs/Nanotechnology-book.pdf This next link was an important patent as well for electrovaya. http://evworld.com/article.cfm?storyid=1902 If you take some time to look up some of their patents you will find it interesting. The important recent developments are the quality improvements and increased automation. They have dramatically reduced the cost of production. There is a good article that explains the superpolymer technology in more detail but I can't seem to find it right now.