Tesla Battery Maker Suspends Cobalt Supplier

Panasonic Corp said it was unable to determine how much of the cobalt used in batteries it makes for Tesla cars comes from Cuba, a country subject to US sanctions, and that it had suspended relations with a Canadian supplier as a result of its concerns.

The Japanese electronics maker, the exclusive supplier of batteries to Tesla Inc, made the comments following questions from Reuters about whether the batteries contained Cuban cobalt.

Two sources familiar with the matter told Reuters that some of the cobalt that Panasonic uses to make Tesla’s batteries is mined in Cuba by Canadian supplier Sherritt International Corp.

Panasonic said it was unable to tell how much cobalt sourced from Cuba via its Canadian supplier ended up in the batteries it provided to the US market “due to co-mingling of sources by its suppliers in several phases of manufacturing processes”.

“Panasonic has chosen to suspend its relationship with its Canadian supplier,” a spokeswoman said, without naming the supplier. She added that Panasonic had used cobalt from the Canadian supplier for batteries used in the Tesla Model S and Model X, but only after February this year.

“Panasonic has sought guidance from the US Treasury Department’s Office of Foreign Assets Control regarding its interpretation of the scope of the US ban on Cuban-origin imports,” she said.

A US Treasury official, who asked not to be named, said the treasury does not discuss investigations and could not confirm whether one existed.

The United States imposed sanctions on Cuba after Fidel Castro nationalized swathes of American assets more than 50 years ago.

Tesla, when asked for comment by Reuters, did not address questions about whether its batteries contained Cuban cobalt or whether that could potentially put the company in breach of sanctions.

A spokesman said: “Tesla is aiming to achieve close to zero usage of cobalt in the near future.”

An anticipated electric vehicle revolution has sent demand and prices for cobalt—a crucial component in car batteries—surging over the past two years.