
The automotive industry latched on to 12-volt electrical systems in the Fifties and hasn't changed since. Even hybrids and EVs with high-voltage traction batteries still have a 12-volt battery to run things like window regulators, seat motors, headlights, and more. While we’ve seen several 48-volt “mild-hybrid” vehicles over the years, Tesla is the first to go 48-volt on a pure EV with the Cybertruck, and its marketing team wants you to know about it.