Tesla Inc's stock was set for a fifth consecutive session of gains as anticipation heats up for its "Battery Day" event next week, recouping some of its recent valuation slump following a sell-off and surprise exclusion from the S&P.

Tesla's Battery Day showcased significant advancements in engineering, manufacturing, and battery technology, highlighting the new Plaid Model S and a future $25,000 electric vehicle. The event revealed three key takeaways that extend beyond just batteries.