Owners of the E-Tron will be happy to hear that the car will be compatible with 80% of the charging stations in Europe. You'll be given an e-tron Charging Service card and billing will be handled under a single contract with pricing models, on a monthly basis. As standard the E-Tron will come with a compact mobile charging system which can be used on either a 230 volt household outlet or a 400 volt three phase outlet. An optional connect charging system will double the power to as much as 22kW.