Or rather from Panasonic. That's where Tesla get's its batteries from.
(Tesla financed the Gigafactory, but it is operated by Panasonic, and they previously bought their lithium-battery cells from Panasonic. This is according to Tesla's own 10-K filings [1,2]).
(Tesla financed the Gigafactory, but it is operated by Panasonic, and they previously bought their lithium-battery cells from Panasonic. This is according to Tesla's own 10-K filings [1,2]).
[1] https://www.sec.gov/Archives/edgar/data/1318605/000156459016...
[2] https://www.sec.gov/Archives/edgar/data/1318605/000156459017...