Tesla (NASDAQ: TSLA) piqued many people's interest recently when the company filed a form with Texas' Comptroller's Office indicating the electric vehicle maker's interest in building a battery-grade lithium hydroxide refinery.

So far history has shown that it's best not to bet against Tesla's big ideas, so what could the company gain from owning its own battery materials refinery along the Gulf Coast? Only the potential to lower the price of its expensive batteries.

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Source Fool.com