Starting next spring, Ford EV owners will have access to roughly 12,000 Tesla Superchargers via adapters in the first direct partnership of its kind between two competing electric vehicle makers.

And starting in 2025, Ford Motor Co. will stop building its EVs with traditional Combined Charging System (CCS) ports, replacing them with Tesla’s preferred North American Charging Standard (NACS) charge port, removing the need for a special adapter.

“Widespread access to fast-charging is absolutely vital to our growth as an EV brand, and this breakthrough agreement comes as we are ramping up production of our popular Mustang Mach-E and F-150 Lightning and preparing to launch a series of next-generation EVs starting in 2025,” Ford CEO Jim Farley said in a statement.

Farley and Tesla CEO Elon Musk made the announcement Thursday evening on Twitter. Tesla operates about 17,000 superchargers in the U.S., so Ford will have access to the majority of them.

Musk, who also owns Twitter, said the partnership was something Tesla is “super happy to support,” noting he has a “tremendous amount of respect for Ford as a company. It makes great, great vehicles.”

Tesla earlier this year opened up its Supercharger network to outside automakers, although it has only committed to opening 3,500 current and future charging stalls to non-Tesla EVs. To-date, the automaker has only opened a handful of stations to non-Teslas.

Musk said the price for adapters for Ford EVs starting next spring would not be “cost-prohibitive,” and likely be in the “hundreds of dollars” range.

What remains unclear is how exactly Ford’s current third-party network of roughly 84,000 chargers, including 10,000 fast-chargers, would interact with Ford EVs built with the NACS charge port starting in 2025. A spokesperson said it’s expected the third-party charging stations would eventually offer plugs that would connect with NACS ports, although it’s unclear who would pay for it.

Ford dealers, as part of a series of standards in order to sell future EVs, are required to build a number of charging stations. A spokesman said Thursday’s announcement does not change those requirements.

“The Model e program was developed in consultation with our dealers and is designed to provide the best-in-class customer experience,” the spokesperson said. “The equipment defined in the current Charging Standards fully supports Ford’s existing CCS BEV offerings, and when used in combination with a NACS-to-CCS adapter, will support future Ford vehicles equipped with the Tesla NACS inlet port.”

It is still unclear if the dealer would be required to provide the adapter or if the customer would be responsible for bringing their own.

“Tesla has led the industry in creating a large, reliable and efficient charging system and we are pleased to be able to join forces in a way that benefits customers and overall EV adoption,” Marin Gjaja, chief customer officer, Ford Model e, said in a statement. “The Tesla Supercharger network has excellent reliability and the NACS plug is smaller and lighter. Overall, this provides a superior experience for customers.”

Developing appreciation

Farley said he developed an appreciation for Tesla’s charging network while on a family vacation last year.

“My kids kept looking at me and going ‘Hey dad, there’s another Supercharger, can we stop there?’ and I was like ‘No, we have to go here behind this other building,’” he said. “It became obvious to me the job (Musk’s) team had done and what it means to customers.”

Musk and Farley, who had as many as 115,000 listeners on their Thursday evening announcement, said they’d continue to explore ways to collaborate to increase EV adoption.

The tie-up is notable given the pair’s sometimes-chippy past.

Farley and Ford are known to take jabs at Musk and Tesla in speeches, on Twitter and in commercials.

For example, when the company launched its BlueCruise driver-assist technology, Farley tweeted “we tested it in the real world, so our customers don’t have to,” a shot at Tesla’s AutoPilot technology.

Musk clapped back with a video snippet of the movie “Tommy Boy,” featuring Farley’s late cousin, the comedian Chris Farley.

One of Ford’s recent commercials made fun of those who “fly away on their own personal space ships when things get hard,” a reference to Musk and other billionaires’ attempts at commercial space companies.

And Ford PR people are quick to point out that Tesla’s customer service vans are often gas-powered Ford Transits.

But on Thursday evening, the two CEOs were complimentary of each other.

“It’s super hard what Tesla’s done,” Farley said. “I totally respect them to do that, to make a fully software updatable vehicle.”

Ford shares rose 1 percent in after-hours trading to $11.48.