We may no longer talk about battery packs in the future, but rather about the "structural battery."

We have been reporting about the Tesla Model Y mega castings for quite some time already. Little did we know that this was part of a much larger plan: Tesla intends to integrate the battery pack to the body structure of its future cars, and the massive cast parts are a crucial part of that idea.

Elon Musk said Tesla developed a specific alloy to make that happen. This new aluminium alloy had to be very castable, high-strength, and not prone to retreat, which causes large castings to deform. Tesla had to avoid that at all costs.

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