This could make the battery grade graphite market pretty interesting.

Quote "With established producers such as Tesla Motors, Foxconn, LG Chem and Boston Power already developing battery megafactories, the introduction of major new, financially powerful producers, such as Apple, is likely to put significant strain on upstream suppliers."

http://www.mining.com/web/apple-puts-batteries-at-the-centre-of-its-ev-masterplan/