Which electric car was the first to use a production 800-volt charging system?

The Porsche Taycan was the first production electric car to use an 800-volt charging system.

Porsche introduced the Taycan in 2019 with an electrical architecture operating at roughly 800 volts, about twice the voltage used by many earlier battery-electric cars. The higher voltage allows the same charging power to flow with lower current, which can reduce cable size, resistive losses, and heat in the charging system.

At suitable high-power charging stations, early Taycan versions could accept charging power of up to 270 kW under favorable conditions. Porsche claimed that the battery could gain substantial range in a short charging session, although actual results depend on battery temperature, state of charge, charger capability, and local conditions.

The Hyundai Ioniq 5 and Kia EV6 later popularized 800-volt technology in more mainstream vehicles. An 800-volt system does not mean every charger supplies 800 volts continuously; the vehicle and charger negotiate voltage and current throughout the session.