Tesla and Australian graphite producer Syrah Resources have once again extended a key deadline tied to their battery supply agreement, giving both companies more time to resolve technical issues involving battery-grade graphite used in electric vehicle batteries.
According to Syrah, the two companies have now pushed the deadline to June 1, marking the fourth extension since the issue first emerged. The extension allows additional time for Syrah to address concerns raised by Tesla about the quality of material produced at its Vidalia, Louisiana facility.
Tesla previously issued a notice alleging that Syrah had failed to provide conforming samples of natural graphite active anode material (AAM) from the Vidalia plant. That notice required Syrah to resolve the issue by March 16 or risk Tesla terminating the supply agreement.
Rather than ending the deal, both companies agreed to extend the “cure” period again while continuing to work toward a solution. The revised deadline is subject to approval from the U.S. Department of Energy.
Syrah said it does not agree with Tesla’s claim that it is in breach of the contract but confirmed the two sides remain engaged in resolving the matter. “While Syrah does not accept it is in default under the offtake agreement, the parties have extended the cure date to June 1, 2026 and are closely collaborating to cure the alleged default,” the company said.
The agreement between the two companies dates back to 2021 and covers the supply of 8,000 metric tons of graphite per year for four years. The material is processed into active anode material used in lithium-ion batteries, a critical component in electric vehicles.
Syrah’s Vidalia facility is designed to process graphite mined from Syrah’s Balama operation in Mozambique and convert it into battery-ready material for use by automakers like Tesla.
Developing battery-grade graphite at scale, however, is technically demanding. The material must meet strict specifications related to purity, particle size, electrochemical performance, and durability inside a battery cell. Even small deviations can affect battery performance, which is why automakers typically require extensive testing before approving new suppliers.
Tesla issued its first default notice in July 2025 after determining that samples from the Vidalia plant did not meet its technical standards. Since then, both companies have repeatedly extended the deadline to allow time for additional testing and adjustments to the production process.
