According to some in the industry, one of the next steps on the way to improve electric drive and plug-in hybrid vehicles is wireless charging.

With this concept in mind, Daimler and BMW are jointly developing and implementing one common wireless charging technology.

Wireless battery charging will make the handling of electric drive and plug-in hybrid vehicles even easier, said both manufacturers. Mercedes-Benz said it will start fleet testing of this “unplugged” technology with the S 500 Plug in HYBRID soon, in order to develop a real S-Class solution in recharging the high voltage battery in terms of comfort and ease of operating in the near future.

Companies explained the system consists of two components: a secondary coil integrated under the car and a primary coil integrated into a floor plate that can be placed on a garage floor for example. Electrical energy is transmitted contact-free without the need for a cable, at a power rate of 3.6 kilowatt and with a degree of efficiency of 90 percent.

Daimler and BMW said they have agreed on jointly developing and implementing one common technology for wireless recharging high-voltage batteries of electric drive and plug-in hybrid vehicles.

In September, the Mercedes-Benz S 500 PLUG IN HYBRID will be launched, said Daimler’s Mercedes brand. It offers 325 kilowatt of power, sprints in 5.2 seconds from zero to 100 kilometers per hour (62 mph), and can go 33 kilometers on electric power. It has a certified fuel consumption of 2.8 liters per 100 kilometers, the equivalent of 65 grams of CO2/km. And it achieves excellent efficiency in real word driving as well. Key elements for this performance are a bi-turbo V6 and a hybrid powertrain.

The S 500 PLUG IN HYBRID is the first luxury sedan with a certified consumption below three liters per 100 kilometers, said Mercedes. After the S 400 HYBRID and the S 300 BlueTEC HYBRID, it is the third hybrid model in the S-Class range. The vehicle is said to combine a highly advanced hybrid powertrain with the unique innovations and comfort features of the S-Class.