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Samsung Galaxy Phone Rapid Charger Mod

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TRusselo
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Default Samsung Galaxy Phone Rapid Charger Mod

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... (thats what this post is for!)
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!!
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? almost 5 hours! or at 350 mah in the battery charger? almost 7 hours!
I was able to charge my extended battery (says 2500mah) from 8% to 100% in about 2 hours 45 min over USB cable (AC mode) with the screen off. 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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AdamOutler
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Good guide. I did the same modification to my Verizon car charging cable. I don't have Verizon, but I swapped an iPhone car charger with a verizon user who got rid of his Motorola Android.

This mod works on any charger. The device will always display "Charging(AC)" and this enables full charging capability.

I modded my cable by taking apart the microUSB connector and dropping a bit of solder between pins 2 and 3 on the back side of the connector. It works great.

Do not do this on a cable which may be connected to a PC. If the PC is older and does not have overcurrent protection, it may fry the USB Power Supply.
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You could also use one of those short usb extender cables that come with some usb dongles. I did that with one of mine and it works great. Don't even have to take the cable apart just carve out a small part of the plastic connector between the pins and bridge it with solder. Or use a conductive pen- haven't tried that though.
 
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Wow i'm so lost, so does this apply to the vibrant...

You know maybe I have had my foot up my ass for sometime then..

I ALWAYS charge my phone with the USB charger connected to the computer and it seems to take forever...

You must forgive me but I always leave my phone charging on my PC everynight and have actually lost the AC power wall plug portion...

Will connecting this through the USB of the computer also only supply the 350mA instead of the full 800mA like your saying, or will the computer always deliver the sexy amount?

Thank you sir, you are a genius?
 
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Quote:
Originally Posted by jwleonhart View Post
Wow i'm so lost, so does this apply to the vibrant...

You know maybe I have had my foot up my ass for sometime then..

I ALWAYS charge my phone with the USB charger connected to the computer and it seems to take forever...

You must forgive me but I always leave my phone charging on my PC everynight and have actually lost the AC power wall plug portion...

Will connecting this through the USB of the computer also only supply the 350mA instead of the full 800mA like your saying, or will the computer always deliver the sexy amount?

Thank you sir, you are a genius?
Most of PCs provide up to 500mA on single USB port or on pair of ports, haven't heard about mainboard which doesn't throotle it and let power drain go higher.
However, you can mod usb cable with 2 male and 1female connectors, that kind for powering external hard drives.
 
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Here is a picture of the pinouts in a usb cable..

Now obviously you have the 5V, Ground, and data, but then where would you add in more power?
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CastleBravo
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Quote:
Originally Posted by jwleonhart View Post

Now obviously you have the 5V, Ground, and data, but then where would you add in more power?
The talk about connecting the pins 2 and 3 is only an indication to the phone. Normally, usb ports from computers, etc. will only provide 500 mA of current. Typical wall adapters provide 1000 mA of current. Samsung phones will normally only draw the smaller amount of current, unless pins 2 and 3 are shorted, which tells the phone to charge at the full rate of 1000 mA.

So pin 1 still carriers power, it just carries more power when connected to a source capable of providing the power (e.g. most wall adapters), and pins 2 and 3 tell the phone to accept the increased power.
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Quote:
Originally Posted by jwleonhart View Post
Wow i'm so lost, so does this apply to the vibrant...

You know maybe I have had my foot up my ass for sometime then..

I ALWAYS charge my phone with the USB charger connected to the computer and it seems to take forever...

You must forgive me but I always leave my phone charging on my PC everynight and have actually lost the AC power wall plug portion...

Will connecting this through the USB of the computer also only supply the 350mA instead of the full 800mA like your saying, or will the computer always deliver the sexy amount?

Thank you sir, you are a genius?
if the 2 data pins arent joined the phone WILL NOT receive anymore than 350. this tells the phone "im an official charger, take more!"
if you are going to mod a cable to have the 2 data pins joined, make sure the 2 pins shorted on the phone end and NOT THE PC END of the cable, and NOT BOTH EITHER. shorting the data pins on the computer side can blow your usb port.... or more.
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Lukiqq
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Same thing you can make via kernel by adjusting max8998 regulator driver. I've done it in my Galaxian kernel
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