摘要 |
A method comprises the steps of determining values of one or more parameters of a first energy reservoir in a first device and corresponding parameters of a second energy reservoir in a second device, and setting a direction for transferring energy between the first energy reservoir and the second energy reservoir. The direction may be set based on the voltage of the first energy reservoir and the voltage of the second energy reservoir, based on an input from a user, or based on the values of one or more parameters of the first energy reservoir and the second energy reservoir obtained in a device-to-device communication between the first device and the second device. A bi-directional charging interface for executing the method comprises two energy paths in opposite directions and a control unit for setting the direction for the energy transfer.
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