According to experts in the industry electric vehicle charging times will plummet over the next five years and that even high capacity batteries should be able to be charged in less than ten minutes, taking no more time than a stop at your favorite gas station.
This is a two-part prediction as both ultra-fast charging and the way batteries are designed need to be handled. In the case of the batteries this will likely be improvement on the current chemistry and not something entirely new.
Currently the majority of EVs use 400V electrical systems. These are rated as high-voltage systems.
To get more power in watts than an EV can deliver—the charge it will accept—either voltage or current need increasing. Higher current requires bigger cables, heavier duty cables and thicker insulation; all of this creating a lot more heat. Rather than this, the voltage could be increased. Porsche has introduced the 800V electrical system which gets us two things we want: higher performance and lower charging times.
Last year Ionity introduced 150kW and some ultra-rapid charges running at 350kW in their public charging stations. The Porsche Taycan is the first vehicle able to take advantage of the 350kW chargers using its 800v electrical system.
Porsche claims that a Yaycan battery can get from a 5% charge to 80% charge at one of Ionity’s stations in just over 20 minutes. Even then the Taycan isn’t calling on the full power of the charging station.
Remember this is a story in two parts, the second part being how quickly the battery cells can accept a charge. So the rest of the story waiting to be told is who comes up with the new battery technology that completes this half of the equation.