Battery manufacturer
Appears in 2 stories · Last updated Nov 4, 2026
Converting US EV capacity to storage cells
Samsung SDI's StarPlus Energy plant in Kokomo, Indiana, began mass-producing lithium iron phosphate cells for grid storage in October. Finished battery boxes are due to customers in December, and the company has booked more than 60 gigawatt-hours of US storage orders this year.
Updated Nov 3
As of August 2026: Targeting 2027 mass production
A June 2026 investigation backed by more than 20 independent battery experts concluded that Donut Lab's claimed solid-state battery is a conventional lithium-ion cell. Voltage curves at 3.7–3.8V at 50% state of charge and graphite anode expansion signatures matched NMC lithium-ion chemistry — not the sodium-ion solid-state design Donut Lab announced at CES.
Updated Aug 1
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