Tesla deploys its first full V4 Supercharger architecture

In September 2025 Tesla brought online its first station built on the full V4 Supercharger architecture, including the new V4 power cabinet. The upgraded hardware raises peak charging to around 500 kW for passenger vehicles — and up to roughly 1.2 MW for the Tesla Semi — while longer cables make the stalls easier to use for non-Tesla EVs.

The Supercharger network was already the largest and most reliable fast-charging system in the world, and adopting Tesla’s NACS connector became the North American standard. V4 keeps Tesla ahead on charging speed and reliability even as the network opens to other brands.

Reliability — not just peak speed — is the practical barrier to EV adoption, and here Tesla’s edge is stark: independent surveys repeatedly rate Superchargers the most dependable public network by a wide margin, with uptime around 99.9%, the payoff of Tesla owning the entire stack from connector to payment to the cars themselves. V4’s higher power and longer cables also future-proof the network for larger battery packs and for the Cybertruck and Semi, while making stalls easier for the growing number of non-Tesla EVs now plugging in.