TechTablets › Forums › Cube Forums › i7 Core M / i7 Stylus Discussion › Charging through usb3.0 port
My guess is it won’t/can’t work.
USB voltage is 5 volts, whereas the battery used in the Stylus and Book products is around 7.4 volts (I believe!).
You cannot charge a 7.4 volt battery from a 5 volt power supply.
This is why it needs a 12 volt charger.
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