Britain, one EV owner says the '80% rule' is outdated and drivers can relax

A British EV creator argues that the widely repeated “80% rule” is often applied too broadly, framing it as a time-saving habit for road trips rather than a strict battery-damage guideline. In a YouTube video, Dave Takes It On said unplugging around 80% on a fast charger can help match typical stop times at service areas, where drivers already spend 10 to 15 minutes on food, restrooms, and breaks. He cited Tesla’s claim that a Model 3 can add about 170 miles in 15 minutes. The video also notes fast charging slows near 80% as vehicle and charger coordinate, so extra time past that point yields less per minute.