Most electric vehicles on sale today run on a 400-volt architecture, but there are a handful of models that double that and operate at 800 volts. The number of 800-volt EVs is on the rise, and this is being touted (by those manufacturers that have already adopted it or want to adopt it) as the superior solution since it allows for higher charging speeds, improved efficiency, better performance, and the use of thinner cables as well as a reduction in the weight and size of some components.
