CATL has announced a new “condensed” battery with 500 Wh/kg
I just realized how much energy efficiency is being squeezed out of a Tesla. It&#x27;s incredible.<p>A normal diesel fueled sedan such as the Chevy Cruze diesel runs at about 31mpg, which is 13.2 km&#x2F;l or 15.3 km&#x2F;kg. Diesel has a mind-boggling 12700 Wh&#x2F;kg energy density[1], which translates to an efficiency of ~827 Wh&#x2F;km for the Chevy.<p>By contrast, the Tesla Model S, has a ~540 kg battery[2]. At 272 Wh&#x2F;kg (from the posted article), that&#x27;s ~147 kWh of energy storage, and the Tesla can do a rated 650km on a single charge[3]. So that&#x27;s an efficiency of ~225 Wh&#x2F;km, which is ~27% of the energy required to run a normal car!<p>It just wouldn&#x27;t have been possible to run cars on batteries without this efficiency bump.<p>1. <a href="https:&#x2F;&#x2F;chemistry.beloit.edu&#x2F;edetc&#x2F;SlideShow&#x2F;slides&#x2F;energy&#x2F;density.html" rel="nofollow">https:&#x2F;&#x2F;chemistry.beloit.edu&#x2F;edetc&#x2F;SlideShow&#x2F;slides&#x2F;energy&#x2F;d...</a><p>2. <a href="https:&#x2F;&#x2F;blog.evbox.com&#x2F;ev-battery-weight" rel="nofollow">https:&#x2F;&#x2F;blog.evbox.com&#x2F;ev-battery-weight</a><p>3. <a href="https:&#x2F;&#x2F;www.caranddriver.com&#x2F;tesla&#x2F;model-s" rel="nofollow">https:&#x2F;&#x2F;www.caranddriver.com&#x2F;tesla&#x2F;model-s</a>