US — TechCrunch

Pentagon offers battery startup 6K $250M loan to build U.S. factory

MobilityNovember 7, 20261 min read

6K, a battery startup from North Andover, Massachusetts, got conditional approval for a $250 million loan from the U.S. Department of Defense. The money would help it build a battery materials factory in Tennessee.

A big loan for a new battery factory

6K announced that it won conditional approval for a $250 million loan from the Department of Defense. The company plans to build a factory in Tennessee. The plant will use a special process that runs on microwaves to make battery materials without relying on Chinese suppliers.

Key numbers and facts

Loan amount: $250 million (conditional approval)
Earlier grant: $50 million from the Department of Energy, awarded in 2023
Company age: 12 years old
Original factory opening target: 2024
Battery type named: lithium iron phosphate (LFP)

What happened to the old grant

6K first received a $50 million grant from the Department of Energy under the Bipartisan Infrastructure Law. The Trump administration canceled that grant in a broad review of awards made under President Biden. Because of this, 6K had to apply again. The grant loss and uncertain demand for electric vehicles (EVs) led the company to change its plans and delay the factory.

Why it matters

Batteries are used in many things, including military equipment. The Pentagon wants more battery production inside the United States. 6K says its method needs fewer steps to make cathode material, a key part of a battery. The process can also work with several battery types, which could help the company serve more customers.

What to watch

Whether the $250 million loan becomes final after its conditional approval
Whether the Tennessee factory opens on its new schedule
Whether 6K can run its microwave process at factory scale
How EV market demand changes over time

Glossary

6K: A battery startup based in North Andover, Massachusetts, that makes battery materials using a microwave-based process.
Department of Defense: The U.S. government agency in charge of the military.
Department of Energy: The U.S. government agency that handles energy programs and funding.
cathode material: A key part inside a battery that helps store and release electric power.
lithium iron phosphate (LFP): A type of battery chemistry that uses lithium, iron, and phosphate materials.
Bipartisan Infrastructure Law: A 2021 U.S. law that provided money for roads, bridges, energy, and other projects.

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