9 Fastest-Growing Battery Technology Stocks to Buy

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6. Eos Energy Enterprises, Inc. (NASDAQ:EOSE)

Eos Energy Enterprises, Inc. (NASDAQ:EOSE) is one of the fastest-growing battery technology stocks to buy. On April 9, 2026, the company said preliminary first-quarter revenue would be $56 million to $57 million, with record shipments and record manufacturing output pointing to continued progress in its factory ramp. Eos said shipments rose 17% from the prior quarter, battery output increased 10.4%, bipolar output rose 10.6%, and automation yields improved 22% sequentially. It also completed factory acceptance testing for its second battery line, with initial production expected by the end of the second quarter.

The broader story is not just that revenue is rising again, but that Eos appears to be converting a difficult manufacturing transition into actual volume. In late February, the company reported full-year revenue of $114.2 million, more than seven times 2024 levels, while fourth-quarter revenue reached a record $58.0 million. Eos also booked more than $240 million of new orders in the fourth quarter and ended 2025 with a $701.5 million backlog, suggesting the growth came with real demand behind it rather than a one-off quarter.

Eos Energy Enterprises, Inc. (NASDAQ:EOSE) designs, manufactures, and supplies zinc-based battery energy storage systems for utility, commercial, industrial, and microgrid applications.

While we acknowledge the potential of EOSE to grow, our conviction lies in the belief that some other AI stocks hold greater promise for delivering higher returns and have limited downside risk. If you are looking for an AI stock that is more promising than EOSE and that has 100x upside potential, check out our report about the cheapest AI stock.

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