As the demand for cobalt and other minerals that are needed for batteries that power electric vehicles and other devices continues to grow tech giant Apple Inc. is exploring the unprecedented move to buy long-term supplies of cobalt directly from miners for the first time.

Bloomberg reported that Apple is seeking to ensure it will have enough of the key battery ingredient amid industry fears of a shortage driven by the electric vehicle boom.

Apple is one of the world’s largest end users of cobalt for the batteries in its gadgets, but until now it has left the business of buying the metal to the companies that make its batteries.

The talks show that the tech giant is keen to ensure that cobalt supplies for its iPhone and iPad batteries are sufficient, with the rapid growth in battery demand for electric vehicles threatening to create a shortage of the raw material. About a quarter of global cobalt production is used in smartphones.

Apple is seeking contracts to secure several thousand metric tons of cobalt a year for five years or longer, according to one of the people, declining to be named as the discussions are confidential. Its first discussions on cobalt deals with miners were more than a year ago, and it may end up deciding not to go ahead with any deal, another person said.

An Apple spokesman declined to comment. Glencore Plc Chief Executive Officer Ivan Glasenberg late last year named Apple among several companies the miner was talking to about cobalt, without giving further details.

The move means Apple will find itself in competition with carmakers and battery producers to lock up cobalt supplies. Companies from BMW AG and Volkswagen AG to Samsung SDI Co. are racing to sign multiyear cobalt contracts to ensure they have sufficient supplies of the metal to meet ambitious targets for electric vehicle production.

Australian Mines Ltd., developing the Sconi mine in Queensland state, agreed a cobalt and nickel supply deal with SK Innovation Co., South Korea’s top oil refiner, that’s worth about A$5 billion ($3.9 billion) at current prices, the Perth-based company said in a presentation.

SK Innovation, which plans to use the raw materials at an EV battery manufacturing plant in Hungary, agreed to buy all of the project’s planned output for up to 13 years, according to the filing.

BMW is also close to securing a 10-year supply deal, the carmaker’s head of procurement told German daily FAZ in early February.

The price of cobalt has more than tripled in the past 18 months to trade above $80,000 a metric ton. Two-thirds of supplies come from the Democratic Republic of Congo, where there has never been a peaceful transition of power and child labor is still used in parts of the mining industry.