Panasonic, source: http://www.teslamotors.com/blog/panasonic-and-tesla-sign-agreement-gigafactory http://www.teslamotors.com/blog/panasonic-and-tesla-sign-agr.

Panasonic, source: http://www.teslamotors.com/blog/panasonic-and-tesla-sign-agreement-gigafactory http://www.teslamotors.com/blog/panasonic-and-tesla-sign-agr... http://en.wikipedia.org/wiki/Tesla_Model_S#Battery http://en.wikipedia.org/wiki/Tesla_Model_S#Battery