Chinese firms could be set for a key role in Apple's planned electric car.
The tech giant is reportedly talking to BYD and CATL over supplies of batteries.
That's according to Reuters sources.
CATL already supplies Tesla, and is the world's biggest maker of EV batteries.
BYD is the number four, and also makes its own vehicles.
Now the discussions are said to be subject to change, and it's not clear if any agreement will be reached.
The iPhone maker has set one tough condition.
Sources say Apple is insisting on manufacturing in the U.S.
That reportedly doesn't appeal to CATL, which is worried about the political tensions between Washington and Beijing.
None of the firms involved would comment, but traders took note.
BYD shares closed over 6% higher on Tuesday (June 8), while CATL shares reversed earlier losses to end 0.5% higher.
Reuters reported in December that Apple was working on self-driving technology, and aiming to launch a vehicle in 2024.
Sources have said it could use its own breakthrough battery technology.
It's not clear what kind of system is the subject of talks with the Chinese firms.