Tesla puts 4680 battery cells back in Model Y; Here’s why

Tesla has started building Model Y battery packs with its in-house 4680 cells again, more than two years after pulling the plug on the original 4680-equipped Model Y to prioritize Cybertruck production.

But this time, the motivation isn’t revolutionary battery tech. It’s tariffs. And also, Cybertruck’s poor sales mean the program doesn’t consume many batteries.

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