Tesla Inc CEO Elon Musk said improvements to be unveiled at the electric-vehicle maker's "Battery Day" event would not reach "serious high-volume production" until 2022, knocking its shares down.

Fasten your seatbelt, because Tuesday is Tesla's "Battery Day", and some investors expect Chief Executive Elon Musk's pitch on the electric car maker's energy storage advances to re-energize its rally ...

Public policy executives Rohan Patel and Hasan Nazar and the head of the power-train and energy units Drew Baglino also ...