radar good to see you are starting to do some DDwork thru the weekend and get back to me Monday AM. been a slice. here's a quote to work with... "Only flake graphite which can be economically rounded and upgraded to 99.9% purity can be used to make the spherical graphite (“SPG”) used in Li ion batteries. The process is expensive and wastes 70% of the feedstock flake graphite" so there's some help for your flake research into the low end of the Li ion battery market. your potential market. now come up with cost to produce figures. some have been published already.