| 摘要 |
A method and an apparatus for charging an electronic device with USB connection are provided. The method comprises, at the side of the first electronic device which is charged by a second electronic device, the steps of: receiving a power supply at a first voltage level from the second electronic device (201); detecting whether there is data communication on the USB connection (202), if there is no data communication on the USB connection, transmitting a message to the second electronic device to request for being charged at a second voltage level which is greater than the first voltage level (203); and receiving a power supply at the second voltage level from the second electronic device. |
