Comments on: Hack a cell phone charger to make a USB charger

by: josh

Tue, 04 Aug 2009 07:35:00 +0000

red is (+) while black is (-) that is the general rule which is true. however for motorolas and other devices. u need to trip the charge from a neutral source, figure it out.

Motorola uses the pin between Pin #3 (green) and #4(black) (Pin X) to sense what device is attached to the mini-USB port. Shorting Pin #3(green) to #2(white) and #X (black) causes the phone to go into handsfree/carkit mode and the LCD backlight will ignore timeout settings and stay on.
Shorting pin X (aluminum foil) to pin 2(white) and to pin 4(black) via R=200KOhm causes the phone to go into charge mode.

if i did a mistake on the color coordination, please do it vice versa or better yet correct me if i’m wrong.

by: Carlos Matthews

Thu, 12 Mar 2009 08:36:16 +0000

hey bro, does anyone know how to hack a phone charger and make it charge any other cell phone

for example, using a motorola charger, and using it to charge a samsung?

PLEAZ HELP!

by: Carlos Matthews

Thu, 12 Mar 2009 08:36:10 +0000

hey bro, does anyone know how to hack a phone charger and make it charge any other cell phone

for example, using a motorola charger, and using it to charge a samsung?

PLEAZ HELP!

by: coco

Sat, 20 Dec 2008 03:44:07 +0000

yeah does any1 kno how to fix a cell phone charga from samsung? it was bit by my cat, so now i cannot chrage it, it must take 5 minutes, well i really friggen do not care just give me an idea.

:) coco/skittlez

by: marie buenviaje

Wed, 19 Nov 2008 13:55:41 +0000

hi..
i want to fix my boarmate’s usb cellphone charger,
the colors of the wires are not black(negative) and red(positive)
they are i think, both white,..
how will i know which wire is the positive and the one negative?

thanks.. =)

by: isko

Sat, 27 Oct 2007 16:56:04 +0000

i found a blackberry usb charger in a thrift store…it works perfectly with my nano….no modification needed……i think any usb charger will do

by: Al

Thu, 25 Oct 2007 19:38:30 +0000

Cool idea! But would it be safer if you used a current limiting device like a diode or resistor or even a transistor?

by: Eric

Mon, 24 Sep 2007 17:20:21 +0000

I did this a few hours before I found this site. My wife’s ipod (click wheel) didn’t see the charger unless pins 2, 3, and 4 were grounded.

by: Chandhan

Tue, 04 Sep 2007 09:49:51 +0000

hi am going 2 convert my ps/2 mouse in usb mouse. i want 2 how about the voltages coming in usb. and am taking a usb cable and cut that and then cut the ps/2 and solder that how it is posible

by: Newt

Tue, 19 Jun 2007 23:46:48 +0000

There are four wires in a USB cable, two for data and two for power. If your phone only requires 5V @ 450 mA then you should be good, but unless your phone has a USB interface you won’t be able to get data.