Tesla’s V4 Superchargers are now delivering 325 kw peak power — but there’s a catch for Cybertruck owners hoping for true 800-volt charging speeds.
The automaker announced on X that all V4-designated Supercharger stations can now hit this higher output. It’s a significant boost from the 250 kw maximum of V3 Superchargers.
Here’s where it gets interesting: While V4 hardware is technically capable of 800-volt charging up to 1,000 volts, current V4 locations aren’t fully equipped yet. They’re using the new V4 posts and connectors but still running on modified V3 cabinet hardware behind the scenes.
The Cybertruck can only maintain that 325-kw peak briefly — likely less than a minute. Despite this short duration, it should cut about five minutes off the typical 40-minute charging session from 10% to 80% battery capacity.
Tesla’s been quietly testing these higher outputs since last year.
The company’s charging network expansion comes at a critical time. More automakers are gaining access to Tesla’s Supercharger network, and many of their EVs support 800-volt architectures. Tesla’s been preparing by installing longer cables to accommodate different charge port locations.
Stellantis isn’t waiting for infrastructure upgrades — they’re working on their own solution to boost 400-volt charging stations for 800-volt vehicles. Meanwhile, the Lucid Gravity, which joins the Supercharger network January 31, claims it can maintain 225 kw on 500-volt systems and reach 400 kw on 1,000-volt chargers.
Tesla first unveiled the V4 Supercharger hardware in 2022, with initial installations following in 2023. The upgrade was designed specifically to support higher-power charging needs of the Semi truck and Cybertruck — Tesla’s only current model with 800-volt architecture.
To achieve 325 kw without true V4 cabinets, Tesla’s likely pushing significantly higher current through their V4 cables and connectors than typical 400-volt fast-charging systems allow.
