South Korea's Samsung SDI said on Tuesday it is in talks to supply energy storage batteries to Tesla, in an order that Korean media said could be worth more than 3 trillion won ($2.11 billion). Samsung SDI shares soared more than 8% on the news.

Federal regulators ordered Tesla to comply with an investigation into possibly defective door handles that reportedly led to trapped passengers.

Tesla has been sued over a fiery Wisconsin crash that killed all five occupants of a Model S, who were allegedly trapped inside because of a design flaw that prevented them from opening the sedan's doors.

Mr. Musk’s supporters say he may quit if shareholders don’t approve a trillion-dollar package. Some investors say it’s excessive and would give him too much sway.