Tesla shared a second video on January 4, 2026, demonstrating its Semi truck reaching a 1.2 MW peak charging rate, with engineers cheering the milestone. This follows the December 31 demo and reinforces the truck's fast-charging potential ahead of 2026 production.
Building on last week's charging demonstration, Tesla posted an official video on X on January 4, 2026, showing engineers celebrating as the class-8 Semi electric truck hits a peak of 1.2 megawatts—more than double the 500 kW max of V4 Superchargers for passenger vehicles.
The footage highlights the effectiveness of the dedicated Megacharger system, designed for the Semi's large battery and enabling up to 70% range recovery in 30 minutes. This capability is crucial for heavy-duty logistics as volume production ramps up at Giga Nevada in 2026, per CEO Elon Musk's August 2025 confirmation: “Tesla Semi will be in volume production next year.”
The milestone addresses key barriers to electric trucking adoption, with the first Megacharger pilot at Giga Nevada since 2021 paving the way for network expansion.
