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Toyota has announced verification testing is to begin later this month of a new wireless battery charging system it has developed for vehicles that use an electric powertrain. The new technology allows a car to be charged simply by parking it in alignment with a coil set into the surface of the ground. This makes the process simpler and easier, dispensing with cables and connectors. The Toyota charging system transmits electricity using magnetic resonance created by changes in magnetic field intensity between a transmitting coil in the ground and a receiving coil in the car. It is designed so that it can reduce any loss in power transmission efficiency caused by misalignment or height differences between the coils. The system is being developed with a future market launch in mind. Measures have been taken to minimise any electromagnetic interference with nearby equipment, and the transmitting coil in the ground has been made robust enough to withstand vehicles driving over it.

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