[TUT]Fast Charging via USB port MOD

[mox123]

Anyone wanting to know how to fast charge using the usb port on your pc/laptop?

This usually takes ages compared to charging via mains lead, the hack itself is quite simple and involves modifying the usb cable

my results are as follows (these can vary depending on what you are using your phone for, what background apps running, etc.

charging with mains lead :
4.2v
998mah
mains ac


charging with STANDARD usb lead:
422mah
3.999v
standard usb

and finally the MODIFIED usb lead hack:
4.161v
782mah
usb hack

as you can see it is a 53% increase in charging compared to standard usb charging mah, and slightly under mains ac charging mah,

as my phone is always plugged in at my work pc or home pc or laptop or whatever this works out good


TUT:
use at your own risk this is for information purposes only and I hold no responsibility to any damage that may arise

using a micro usb cable (charging cable for htc phones)
cut it using a pliers half way through the cable
using pliers again cut away the thick black wiring, the red and black small wiring, and white and green wiring
from the usb port end to the microusb connect the black and red cables together so they join
from the microusb end short out the white and green cables together
from the usb port end leave the white and green cables, do not touch these
use insulation tape/solder to clean it up and then your cable is ready
I will make a mod for car chargers also soon

see attached image showing which wires to cut and which to join up and which to leave alone, if this helped you in anyway (it should help you ) then please hit the thanks button

this mod will trick your pc/laptop/htc into thinking that it is not a pc usb cable and will allow higher currents and voltage to your phone
you can check this with current widget from market place

once this mod is done, you cannot use the same cable again for pc/usb tethering or usb disk drive, only cable can be used for charging

 

[xdviper]

Care to explain how you did it? I got a spare Micro USB cable willing to try and make a tutorial with pictures.

 

[aamir123]

So you forgot to put the directions for the mod...

Sent from my Sensation 4g using XDA App

 

[mox123]

directions are up with a picture

 

[lVlaciiiii]

Seems awesome, but I'd be way too scared to try that on my own. >.<

 

[darkmantra]

First of all im not against this mod. Just want to share my experience just this morning.

I charge my phone via the stock usb cable to my pc and leave until morning approx 7hrs. What happen now my phone Menu button become unresponsive tried different method, shake google for answer , but nothing work. Worst come to worse i may return the phone to HTC for repair. So for anyone want to try this be careful, this could be a problem with HTC as it could result more problem.

HTH

 

[wineds]

Sounds dangerous and a bit risky. Why not just use a USB y cable and a micro USB adapter?

http://item.mobileweb.ebay.com.au/viewitem?itemId=370586078337

 

[grega_slo]

Its not dangerous nor risky in my opinion...
I am using this trick since I owned HTC TYTN2 and I`m using it now.

 

[thunderskain]

Hmmm...

I always thought the different voltages came from the charging adaptor..

The phone adaptors have normal charging voltages so thats why charge normal speed... however PCs have lesser voltage due to USB ports. I think the PC voltage varies on the device that's plugged in.

Thus, we can use the same cable for charging with an adaptor and also for data transfer and the phone knows what its plugged into.

Pardon me if i'm wrong... could be a misconception i had

 

[wanbo]

Why go to that bother when you can just plug in the adaptor!

Sent from my Sensation using Tapatalk

 

[cjm1979]

Hmmm...

I always thought the different voltages came from the charging adaptor..

The phone adaptors have normal charging voltages so thats why charge normal speed... however PCs have lesser voltage due to USB ports. I think the PC voltage varies on the device that's plugged in.

Thus, we can use the same cable for charging with an adaptor and also for data transfer and the phone knows what its plugged into.

Pardon me if i'm wrong... could be a misconception i had

It's got nothing to do with the voltages, they are the same. The phone senses that the data wires are not connected together (open) and presumes that it is plugged into a pc / laptop usb port. Because of this the phone then restricts the current it draws from it's source so that it doesn't cause damage to the pc / laptop usb power supply.
Inside the phone charger the data connections will be shorted out so the phone knows it's the charger and can draw full current.
There is a chance that it could damage the pc / laptop if the usb port supply is not rated high enough

 

[mox123]

Just to update the thread, I've been using this for the last year and a half on all the HTC's I own and no issue at all,

I can connect my phone to my laptop if i dont have access to mains

I can use the cable in the car to a usb charger (which charge slow for some reason)

there are many reasons i.e. in work where I can only use a usb port and no extra plugs for a/c, it means I don't have to carry a plug around with me just a usb cable,

 

[johnerz]

A good post, the issues around drawing to much power could effect older laptops

If I understand correctlly USB3 has the ability to supply more power than USB 2

Anyone any idea if this would reduce charge times without the mod?

 

[abhishek89]

battery will die soon enough...

 

[willumpie82]

you should place a 220 Ohm resistor between the data lines (green and white) if you do that, you will be able to use the where it was intended for, data

with the 200~220 Ohm resistor the phone recognizes the connection as AC-charger. i dit this with a DealExtreme carcharger
source: http://www.ifixit.com/Guide/Upgradi...-current-to-HTC-Hero-and-other-devices/5172/1

If you can get to the ID-pin of the USB-connector (pin4) and connect the following resistors to GND, you get interesting USB modes
Dock-mode = 44-49 kOhms
Car-dock = 5-16 kOhms
source: http://forum.xda-developers.com/showthread.php?t=1185431

 

[v0 HaVoK 0v]

I've done this, and soldered all the cables in the right positions, now I'm testing the charge times between this and a normal usb cable on my HTC G1.
First thing I noticed was that my phone says charging via AC, instead of usb.
Will edit this with the results.

Edit : Been a while, forgot about this, so I forget the exact numbers, but my phone charged around 1 and half hours faster with this mod, and yes, it was on USB 3.0 so its quite good.

 

[Warhero141]

Worthless to try if you don't have USB 3.0.

Sent from my GT-I9100 using xda premium

 

[emfung]

Does this mod increase charge with main AC lead that output 2A e.g. Ipad charger head???

 

[mox123]

usb3 provides up to 900ma

so usb3 should work without any problems

this is usb specification

http://www.usr.com/education/peripherals0.asp

by default usb2 provides 500ma unless it is asked for more by the device, this is where the mod of the cable comes into play, it provides up to 1000ma with this mod

 

[TriTopaz]

If I understand correctlly USB3 has the ability to supply more power than USB 2

Anyone any idea if this would reduce charge times without the mod?

I have an Notebook with USB3.0 and also Power-USB. (Power usb only works with a dockingstation).
The charging is also bad. Takes about ~4 hours from 2% - 100%.


I thought about power reducement by phone, when dataconnection is available. Now I know it for sure :-/