Tesla has switched on the first complete V4 Supercharger station with both V4 stalls and V4 cabinets in Redwood City, California. This station uses tech that’s taken several years to develop. It pushes electric vehicle charging capability to new limits.
V4 cabinet specs
Tesla’s V4 cabinet can deliver up to 500kW charging for passenger vehicles and 1.2MW for Tesla Semi trucks. Inside, there are 16 trays that convert AC power from the grid to high-voltage DC.
These cabinets work with vehicles ranging from 400V to 1000V architecture.
- Triple the power density of the old V3 cabinets.
- Can power 8 stalls instead of just 4, double the previous stall capacity.
- Delivers a maximum of 615 amps at up to 1000V.
- Converts energy at over 96% efficiency.
Station build and cost
Tesla’s new architecture allows one cabinet to feed eight stalls and only needs about 1MW to run at full speed most of the time. Each stall takes up half as much space as before, and installation is quicker thanks to easier setup.
The price per stall sits below $40,000, cheaper to install than any earlier Supercharger option. The cabinets have trays that are easy to swap out, which means less downtime.
Charging performance
This station works differently with each type of Tesla vehicle. Cybertruck can get 30% faster charging from the V4, with peak speed at the full 500kW, it only needs around 35 minutes to reach 80% charge from empty. Tesla’s Model S, 3, X, and Y still get up to 250kW because their systems use 400V, but that’s enough to add 200 miles of driving in about 15 minutes. Tesla Semi trucks can use the full 1.2MW for very quick charging, which helps for busy transport fleets.
Deployment timeline
Tesla plans for a record number of Supercharger openings in 2025, using the V4 cabinet design worldwide. The first new sites are getting permits in multiple places. In China, V4 stalls are up and running at seven stations, spread across Shanghai, Zhejiang, Gansu, and Chongqing, Beijing with more expected soon. Europe has V4 stalls and will see full V4 cabinets next year. Redwood City is Tesla’s flagship site for North America.
Tesla’s V4 cabinet keeps it ahead in charger technology. Some companies in China, like BYD, have announced systems with similar megawatt-level capability. But Tesla’s solution combines reliability, larger network coverage, and works with different vehicle brands. The V4 cabinets handle all charging architecture from 400V to 1000V, so vehicles from Porsche, Hyundai, and Kia can charge at full speed, but wider access for non-Tesla vehicles is expected in late 2025.
This cabinet is a step forward for Tesla’s goal to support more electric vehicles everywhere. The 1.2MW charge for Semi trucks is important for making fast-turnaround long-haul routes possible as Tesla grows Semi production in 2026. A 2% bump in charging efficiency saves energy and money; Tesla’s network now handles over 5 terawatt-hours of energy a year.
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