maemo.org - Talk - View Single Post - Car charger isn't recognized as charger but rather as a computer. Refuses to charge

	erendorn	2011-11-10 , 11:10
	Posts: 738 \| Thanked: 983 times \| Joined on Apr 2010 @ London	#5

Originally Posted by cipper

I hade the same problem; I solved by opening the car charger and short-circuiting the two middle pins of the usb port.

Yep, this is the solution. From the specifications, a wall charger:
- must have the data pin shorted (or connected by a 200 Ohms resistor, which is more or less the same). This indicates that the phone can decide the current it draws without frying the motherboard of a poorly engineered pc.
- must not have the fifth pin shorted (with ground or 5V, I can't remember) (this pin is used to indicate host/master relation in micro usb connected devices, and shouldn't be used for a charger)

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