Electric vehicle charging is getting a major upgrade in California as Tesla rolls out its most powerful Supercharger technology yet. The company’s new V4 cabinets can deliver up to 500 kilowatts of power, a 150kW jump from current DC fast chargers.
Tesla began construction on its first 500kW Supercharger in Campbell, California, and opened a complete V4 station in Redwood City in September 2025. The implementation started in the third quarter of 2025, marking a significant milestone for EV charging infrastructure.
The V4 cabinets support vehicles with battery systems ranging from 400 to 1,000 volts. Each cabinet can power up to eight charging stalls, doubling the capacity of the previous V3 generation. This means Tesla can build stations faster and serve more customers at each location.
Lost Hills, California now hosts the world’s largest Tesla Supercharger site with 168 V4 chargers. Half of these chargers, 84 units, went online on July 3, 2025. The location includes 11 megawatts of solar power and 10 Tesla Megapack batteries.
The V4 technology delivers clear benefits for newer EVs with higher voltage systems. Tesla’s Cybertruck, which uses an 800-volt framework, will charge about 30% faster with V4 cabinets. Other brands like Hyundai, Kia, Audi, and Porsche already sell 800-volt EVs that can take advantage of these speeds.
Higher-voltage systems charge faster and use smaller, lighter components. The Lucid Air’s 900-volt system represents one of the market’s most advanced setups. Previous V4 pedestals were limited to 325kW, the same as V3+ Superchargers.
For Tesla Semi trucks, V4 cabinets can supply an impressive 1.2 megawatts of power. The new cabinets also feature three times the power density of earlier generations while taking up less physical space.
Tesla’s Richmond, California location will add 16 conventional V4 chargers using prefabricated systems. The doubled capacity per cabinet helps Tesla expand its network to accommodate both its growing fleet and third-party EVs that now have network access. The V4 charging posts feature an integrated Magic Dock for compatibility with different connector types. The company is currently securing permits for additional V4 installations as it works to reduce public-charging frustrations faced by many EV owners.