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Posts: 185 | Thanked: 103 times | Joined on Aug 2008
#1
My 1A car charger isn't recognized by my N9 as a wall charger but rather as a usb port on a computer. Then it says that the charger can't provide enough power.

My LG G2x and my fiance's Droid X2 both charge from it fine. Based on this thread here: http://talk.maemo.org/showthread.php?t=68409 It looks like I might have to short the data pins to get the N9 to recognize it as a dumb charger.

Anyone else run into this problem?
 
Posts: 648 | Thanked: 650 times | Joined on Oct 2011
#2
My N9 says my i7 PC can't provide enough power when I plug it into the USB port using the original Nokia cable. When I changed it to a shorter cable from another phone make it charges fine. This may not be applicable in your case but worth noting.
 

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Posts: 61 | Thanked: 2 times | Joined on Jun 2010
#3
I ran into the same problem with my E7, my N900 charged from my 1A car charger, but my E7 kept thinking it was connected to a PC.

I just went on ebay and ordered a Nokia DC-6 car charger, its a 1.2A micro USB and workes perfect with my E7 and N9. I ordered two of them cheap just to have an extra.
 
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#4
I hade the same problem; I solved by opening the car charger and short-circuiting the two middle pins of the usb port.
 

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#5
Originally Posted by cipper View Post
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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Posts: 185 | Thanked: 103 times | Joined on Aug 2008
#6
I shorted the two data pins (pins 2 and 3) on my charger and my N9 still won't charge from it; getting the same error.
 
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#7
Works like a dream here (I "fixed" my Belkin car charger a moment ago by shorting green and white wires).
 
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Posts: 1,348 | Thanked: 1,863 times | Joined on Jan 2009 @ fr/35/rennes
#8
using n810 usb cable , my e7 does not see the car charger and n900 complain it is too low ... the car charger is the one that was shiped along freerunner ...

i am in the process of making my own charger. ...

later
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