We csnlt buy BYD cars because our government tariffed them to hell and back. There's literally no reason to not expect the same would apply to parts.
You don't want BYD cars. Those unreliable POSs have a useful life shorter than a cellphone.
At one point, BYD was the top choice of EV buses in the U.S. They were blacklisted by every transit agency in America even before Trump's order because their vehicles were less reliable than the 40+ year old buses they were replacing.
We tariffed them (Europe will too) because China subsidizes them and is building excess industrial capacity to run our companies out of business where we have higher wages and such. China also artificially keeps its currency low to boost exports toward the same goals.
It's more important that we protect domestic industry and good union jobs than it is for us to import EVs at lower prices.
Here's a great article I shared elsewhere: https://www.wsj.com/business/autos/china-cars-domestic-sale-...
(In one noted instance from the article a company built (through local government subsidies and tax breaks and other schemes) capacity to build around 100,000 cars/year and have only built 600 to date.