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USB Charger - Upgrade Mod for SGS Phones.

20th April 2011, 09:28 AM   |  #1  
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more/better/other info in this thread. http://forum.xda-developers.com/show....php?t=1384253


This post will show you how to MOD an un-official Samsung USB wall charger into one that will enable full speed charging on Samsung Galaxy S phones.

8 $ ebay cheap wall battery charger power output specs:

350 mA battery charging speed - doesnt matter...
800 mA USB port.. THIS IS WHAT YOU WANT!! more the better. nice if the phone would use all of it... Need AC Mode...
Samsung wall USB charger is only 750mA! AND it will set AC mode.

The theory behind it is with samsung galaxy phones and "official chargers":
if the middle 2 data pins on the usb, while getting 5v to the outer 2 pins it tells the phone that it is an *official samsung* charger and enables full speed charging.

without the middle 2 pins connected (with or without data flow) will not charge at full speed. even if you supply 800mA it will only charge around 350mA


well there have been posts of cable hacks to do this or adapters... ha! tape and tinfoil... or hack the cable apart! And you cant use the cable with the PC anymore!
heres my mod... bend 2 pins.. DONE! solder if you know how for better connection!

***only use this charger for samsung phones, not all USB devices will like this, -may dammage some- as the samsung phone is PROGRAMMED to know what to do if the 2 data pins are shorted out***


Phone confirms AC charging NOT USB NOW!! But Camera Died!
Now i can leave my Samsung Charger upstairs, and this one downstairs.
You know how long it takes to charge an extended battery on USB mode? or at 350 mah in the battery charger?

Last edited by TRusselo; 1st February 2012 at 01:29 AM.
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20th April 2011, 11:01 AM   |  #2  
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Check out xda portal!!! Guess whos post made front page????
25th April 2011, 05:36 PM   |  #3  
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update on this mod..
was able to charge my extended battery from 8% to 100% in about 2 hours 45 min over USB with the screen off never timed before the mod but it was slower. In the official samsung charger it was a little over 3 hours. just in the battery cradle it takes around 5-6 hours. Very much improved!
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12th May 2011, 01:47 AM   |  #4  
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Good tip ! sometimes I am almost 24 hrs.. this will help !
12th May 2011, 04:49 PM   |  #5  
my old iPhone USB cable is capable of supplying up to 1A. it may be worth it to modify a cable, glue it in so it's no longer repurposable, and use the old iPhone wall adapter.
12th May 2011, 06:27 PM   |  #6  
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When I plug my old Blackberry charger into the phone, it shows "Charging (AC)" under the Status menu, is this saying that the Blackberry charger is putting the Cappy into full charge mode? Unfortunatly the charger does only say only 700mA output anyway.
12th May 2011, 09:37 PM   |  #7  
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yes its charging at full speed if it says AC. congrats.
good to know about BB chargers.
12th May 2011, 09:58 PM   |  #8  
Quote:
Originally Posted by TRusselo

yes its charging at full speed if it says AC. congrats.
good to know about BB chargers.

1A > 700ma. iphone wall charger has a usb port on it only.
14th May 2011, 10:16 PM   |  #9  
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Quote:
Originally Posted by TRusselo

yes its charging at full speed if it says AC. congrats.
good to know about BB chargers.

More accurately, it means the phone will try to charge at full speed. I have an external battery that has the pins shorted, phone says AC, but it can only output 500ma, so it doesn't charge any faster.

Sent from my SGH-I897 using XDA Premium App
14th May 2011, 11:07 PM   |  #10  
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Quote:
Originally Posted by tiuk

More accurately, it means the phone will try to charge at full speed. I have an external battery that has the pins shorted, phone says AC, but it can only output 500ma, so it doesn't charge any faster.

Sent from my SGH-I897 using XDA Premium App

MORE accurately (as said before) it WILL charge at full speed, OF THE CHARGER.. not the phone. UPTO the full speed of the phone.
thats why i said my charger upped it to 800 not 1100ish in the first post. and why i told the other guy his is working at 700. it depends on the chargers output, that has been explained thank you.

and your charger that is putting out 500ma IS FASTER. without the mod your phone is only charging at "usb speed" or around 375ma ish... just barely faster...
Last edited by TRusselo; 15th May 2011 at 02:02 AM.

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