For obvious reasons there's a lot of focus on Tesla's automobiles, but part of me wonders if these Powerpack grid batteries aren't the real innovation and killer product for the company.
Where's Tesla's secret sauce in this solution: the battery chemistry, the control circuits or well-engineered integration of the parts? How much a threat is constrained lithium supply to the business model?
https://cleantechnica.com/2017/09/30/tesla-using-samsung-sdi...