Tesla Semi Nears Mass Production with US-Made 4680 Cells and 1.2MW Charger
Tesla’s Semi certification filings with California regulators reveal production specifications including a US-made 4680 lithium battery breakthrough and a 1.2 megawatt charging architecture. Documents indicate the Class 8 electric truck is on track for near-mass production this year after achieving key battery localization milestones.
1. Certification Filings Detail Technical Specs
Tesla submitted documentation to the California Air Resources Board outlining the Electric Semi’s powertrain, which features a domestically produced 4680 lithium-ion cell and an integrated 1.2 megawatt charging system designed for rapid replenishment on long-haul routes.
2. US-Made 4680 Battery Breakthrough
The company highlighted its shift to 100% US-sourced 4680 cells, a milestone that streamlines the supply chain, reduces exposure to overseas material constraints and supports scalable battery production capacity.
3. Mass Production and Market Outlook
With regulatory approval imminent, Tesla plans to initiate near-mass production of the Semi later this year, leveraging domestic battery sourcing to lower unit costs, accelerate delivery schedules and strengthen its position against diesel incumbents.