MORE: Mercedes-Benz A firm called Evatran is preparing to offer Tesla Model S owners a wireless charging system , called pad , scheduled to hit the market in the next few weeks . The system uses wireless inductive charging that allows a current to be transferred between the system and the vehicle without any physical contact . The pad can charge at 7.2 kilowatts , enough to add around 20 miles of range per hour to a Model S , and can be used indoors or outdoors . It 's currently only compatible with rear - wheel drive Model S electric cars . Mercedes - Benz will probably become the first car - maker to offer wireless charging as a factory - installed option when the next generation of its S550e plug - in hybrid luxury sedan is launched .
A firm called Evatran is preparing to offer Tesla Model S owners a wireless charging system , called pad , scheduled to hit the market in the next few weeks . The system uses wireless inductive charging that allows a current to be transferred between the system and the vehicle without any physical contact . The pad can charge at 7.2 kilowatts , enough to add around 20 miles of range per hour to a Model S , and can be used indoors or outdoors . It 's currently only compatible with rear - wheel drive Model S electric cars . Mercedes - Benz will probably become the first car - maker to offer wireless charging as a factory - installed option when the next generation of its S550e plug - in hybrid luxury sedan is launched .