<div id="readability-page-1"><figure><img width="1600" height="788" src="https://imageproxy.pbkrs.com/https://electrek.co/wp-content/uploads/sites/3/2025/12/Tesla-Semi-charge-rate.png/query-dz0xNjAw?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" original-src="https://imageproxy.pbkrs.com/https://electrek.co/wp-content/uploads/sites/3/2025/12/Tesla-Semi-charge-rate.png/query-dz0xNjAw"/></figure>Tesla has released a new video showing a Tesla Semi truck charging at a massive 1.2 megawatts (MW), finally giving us a clear look at the charging speeds that will enable long-haul electric trucking.For years, we have been waiting to see the “Megacharger” in action. While Tesla has delivered Semi trucks to partners like PepsiCo, who have been using them for real-world routes, detailed data on the charging performance has been somewhat scarce.We knew the target: Tesla claimed the Semi would be able to charge 70% of its range in 30 minutes. For a truck with a 500-mile range and an estimated battery pack of around 800-900 kWh, that requires an incredibly high power output, well beyond the 250 kW or even 350 kW we see on passenger EVs in North America.Today, the official Tesla Semi account on X released a video showing exactly that.</div>

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Tesla has released a video showcasing its Semi truck charging at an impressive 1.2 megawatts (MW). This demonstration highlights the charging speeds necessary for long-haul electric trucking. The Semi is designed to charge 70% of its range in just 30 minutes, which is crucial for its 500-mile range and large battery capacity. The video marks a significant moment as detailed data on the Semi's charging performance has been limited, despite its deployment with partners like PepsiCo.

- Tesla has unveiled a video demonstrating a Semi truck charging at 1.2 megawatts, showcasing potential long-haul electric trucking capabilities.  
- The video provides a clear update on the performance of the “Megacharger,” as Tesla aims for the Semi to charge 70% of its range within 30 minutes.  
- The charging performance is critical, especially given the Semi's capability to cover 500 miles with a battery capacity of 800-900 kWh, significantly exceeding current passenger EV charging outputs.

Tesla releases video of Tesla Semi electric truck charging at impressive 1.2 MW