[Q] Old Nokia Charger for Defy

matout7 · Apr 8, 2012

Hello Defyers

I have an Old (small pin) nokia car charger its specs as the following

- Input 12v DC
- output 5.7 V 890 mA

I want to convert this small pin charger to a micro USB by some cutting and wiring

My concern is... if i use this charger with my Defy will i fry it...

its standard charger produced 5V , 850mA

with that 0.7V difference i might overload my circuts

but it will work in the end

or i will end up with a black shiny brick

my defy is over clocked and running CM7

daniel_loft · Apr 8, 2012

I've been using this adapter for a while (got it with the E52 from work). Donn't know about rewiring (might be hard to find a "blank" microUSB jack).

Cheers!

Nol3Le · Apr 15, 2012

use 5 volt regulator IC in output voltage..

Akshit_Sharma · Apr 22, 2013

Use a diode in forward bais it give .7 voltage drop across it ...

Sent from my MB526 using xda app-developers app

rogier666 · May 20, 2013

USB specs allow for a 10% voltage tolerance and that's a conservative safety margin. If your 5.7V charger really spits out 5.7V (and not 5.7 + 10%) you have nothing to worry about.

cri1410sti · Jun 29, 2013

detailes

rogier666 said:
USB specs allow for a 10% voltage tolerance and that's a conservative safety margin. If your 5.7V charger really spits out 5.7V (and not 5.7 + 10%) you have nothing to worry about.

you must strip the wires, cut the white and green and put them together, black and red leave them as they are, i have an 2000mAh charger built from a router adaptor and it is working very good, and that i have solved the problem with auto charger that is not OEM- Motorola.

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[Q] Old Nokia Charger for Defy

matout7

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daniel_loft

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Nol3Le

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Akshit_Sharma

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rogier666

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cri1410sti

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