TSLAPrivate

Get Tesla updates in your inboxBeta

Weekly digests, milestone alerts, and new features — we're building in the open.

In ProgressLast updated March 18, 2026

Tesla Accuses Matthews International of Stealing 4680 Dry Battery Electrode Technology

Tesla VP Bonne Eggleston publicly accused former supplier Matthews International of stealing proprietary Dry Battery Electrode (DBE) technology, including software and mechanical designs, with an interim arbitration ruling issuing an injunction against Matthews and Tesla claiming over $1 billion in damages.

First seen

March 18, 2026

Last updated

March 18, 2026

Sources (1)

Source Timeline

Mar 18Not A Tesla AppTesla Accuses Supplier of Stealing 4680 Battery Tech

Related Milestones

Tesla Insurance Expands to 12 U.S. States Proprietary Lithium-Ion Battery Cell Development Automotive Regulatory Credits Backlog at $4.58 Billion Regulatory Credit Program Repeals Reduce Remaining Obligations by $1.11B Automotive Resale Value Guarantee Exposure Doubles to $3.14B

View all Tesla milestones

Tesla Accuses Matthews International of Stealing 4680 Dry Battery Electrode Technology — Tesla | AlphaPerch