Tesla has spent years promoting its 4680 battery cell as the key to cheaper, longer-range electric vehicles. Yet the company’s own regulatory filings and the underlying science tell a far less ...

During the fourth quarter earnings call, Tesla revealed that it has begun equipping Model Y battery packs with 4680 cells. The news horrified recent Model Y owners, who remember the 4680 cell fiasco ...

It may not be wise to put money into battery development when your product is becoming an embarrassment on used car lots, but Tesla has no choice. Bereft of its battery supplier and losing stock value ...