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Build a charger for your Touch 3G

Hey guys. I have had a few PPCs in the past but the Jade is my first SmartPhone. I like to charge my PPCs in the car as I use them for navigating. I use a universal holder plus I dismantle one of these
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as they are easier to wiggle into any dashboard gaps you might have. They are pretty readily available on eBay, but note that they tend to have pretty low guage wire and aren't configured as twisted pairs so it is pretty hit and miss using it to transmit data but it seems to have no problem transmitting DC current. I have used this for very long trips using devices that pull about 1A of current and the cable doesn't warm up so I presume the resistance must be low enough for charging purposes.
Simply connect the other end to a USB Car Charger and you are nearly ready to go. Connecting it up this way will trigger charging but I suspect the device assumes it is connected to a PC as it turns the screen on when you connect it this way as apposed to the Wall Charger where the screen remains off. Careful using USB Chargers designed for other devices (Ipod etc) as they have configurations which may confuse / damage your device. I found this out the hard way when I connected my Jade to an Ipod USB Car Charger which caused all sorts of grief with an undetectable microSD card, the device refusing to turn off which although is now resolved, I am still uncertain whether I haven't caused some damage
So how do you convince the Jade to charge from your Car Charger like a Wall Charger? Well first thing to be aware of is that devices that implement USB charging have various methods of detecting a connection to a Wall Charger as apposed to a computer. As I have mentioned, the iPod (and my old iPaq) uses a resistor configuration between the Ground, 5V and Data Pins to tell the device that it is connected. Fortunately the Jade is much simpler. I have determined from searching the web plus attacking my Wall Charger with a multimeter that all that is required is that the Data Pins are bridged and that the Metal Socket Surround is connected to the Ground Pin (which it is anyway in most Generic Chargers). All that was involved in mine was opening the Charger, finding the middle data pins on the circuit board and dropping a solder bridge between them. Make sure you buy a good quality USB Car Charger that is easy to dismantle (mine was held together by screws) and can provide at least 1A.
Enjoy

My previous phone was a palm treo pro (htc panther), for which i bought a sprint car charger (micro usb). The first charger that was sent to me was heavily used, so i complained and got a new one. After i returned my treo, i got the jade and decided to sell the new charger and modify the old one (which was working fine, except the connector didnt connect properly) to charge the jade. So i opened it up and soldered the two (+ & -) wires to an old usb extension cable, so that now i have a car plug with and usb(-a) socket slightly standing out. When i connect my mini-usb cable for the jade only the charging led lights up.

What did you do with Data Wires? If you joined them together then you have achieved the same outcome as a solder bridge.

Nothing, i just cut them as short as i could. They dont connect to each other...the outer ground isnt connected, too...

[Q] Slow charging with usb extender

Hey guys.
I take a usb extender cable with me to the university.
it looks like this one:
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unfortunately, it charges really slow when I use it.
anyone knows the reason?
there are some guides on turning a usb cable to "charge only" cable.
it just doesn't make sense that a cable that IS capable of transferring data (like the stock N4 cable) performs normally, while this one needs to have the data pins shorted to charge normally.
I am running OmniROM with Hellscore kernel and use fast charge without a difference in charging speed.

how long is the cable and what is the ac current on the adapter?, the longer the cable the more resistance (the cable obviously wont be past 1m to matter), you should be using a stronger ac adapter.
if your charging from pc then its going to be worse,

Like the poster above mentioned it's probably due to the extended length causing a higher resistance. I have lots of different ac chargers in my house including one from a Samsung wave 2. It has a pretty long and very thin cable and charging speeds are noticeable slower in comparison to my other ones.
Sent from my Nexus 4 using XDA Free mobile app

thanks for your replies.
I use the stock charger so it's 1.2a 5v.
the extender is 1.5x the size of the stock cable, and it connects to a samsung micro usb cable (which charges just fine on its own) which is 2/3 the size of the stock cable.
doesn't seem like it's too long to me, it's just ~2 times the length of the original cable and it can't handle it?
what am I suppose to do? I need it that long.. should I follow the "charge only usb cable" guide for the extender? or purchase a single longer cable (shouldn't make a difference according to your remarks about resistance).

Well, I'm a carpenter not an electrician but I think you can compensate with a charger with higher output. I don't know what the max is the n4 can handle, though.
Generally this could have different reasons to begin with. For instance there are cables that just suck. Another point is, using your extender you have an extra connection on the way from the charger to your device. Plug connections are often known to cause a loss. And then there's the fact that most extender cables aren't made for charging but for data.
So you see not every USB cable is the same. I have a HTC car charger working really good with all my devices while a no name one I had couldn't even hold up with the drain caused by GPS/BT/display when mounted in my car even though both were specifically made for charging through the car ac.
Sent from my Nexus 4 using XDA Free mobile app

Being data cables they fit the requirements, the nexus 4 charges under 1amp while the phone its based off is higher that explains the charger,
Usb3 cables allow more current upto 900mah apposed to usb2 at 500mah so it should take twice as long to charge or longer if it doesnt break 500mah barrier
Also the wire gauge, cheaper brands will use thinner wires,so a 24gauge will be able to handle 2amps for tablets etc.
A usb3 cable will be better, you can find thin flexible cables that do meet the requirements
http://www.amazon.com/ORICO-Super-Extension-Surrounded-Connector/dp/B00A5321MW

[How to] Get AC charging speed in your car

This post is dedicated for those who frequently use their beloved smartphone/tablet in the car for navigation or music.
Bored to see your device still loosing battery even if plugged in the car? The charging speed is way too slow?
Seems it gets less juice than it consumes for GPS ?
We will discuss why and how to trick this.
(I know it is already a well known subject but who knows, maybe it will help someone.)
Why ?
The low speed battery charge is due to the fact modern devices control themselves AC power they need for charging.
The device see two possible states when pluggin the microUSB connector :
- The USB plug is used for data connexion (with a Computer, USB Stick or any OTG accessory)
- The USB plug is used for charging only
Here is a wiring diagram of microUSB/USB cable (non-OTG) :
View attachment 2852878
To know in which state he actualy is, the device test the two data connectors D+ and D-.
If there is no connection between them, the devices assumes it is plugged on a computer. Then it limits its own consumption for charge to 500mA. This is how much a standard USB port is able to provide on a computer.
But if the two data pins are connected together, the devices believe he is plugged on standard AC and get the power it really need to charge efficiently (1A, 2A,... depends of the device).
How ?
WARNING
Do NOT plug this connector in your computer.
Do NOT use it for another usage than the usage I describe.
It might destroy the planet (almost)​Assuming you don't want to destroy a connexion cable, there is a simple trick to achieve the very same result using a simple USB Female to USB Male Adapter.
View attachment 2852841
Why such a connector have been created is quite weird to me but it serves our purpose so let's get a cheap one on ebay
For the modding you will need
A sharp knife / cutter / scalpel
Soldering tools (iron, materials)
Cyanolit glue (or any glue you likes)
5 min
First, use the knife to open the connector form the side. Do it gently since you will reassemble it the same way in the end.
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Use the knife again to remove some of the white plastic to reach the internal connector pins
Here you can see the two pins are unconnected
Use the soldering kit you have to connect the two central pins
(In fact the USB specification mention a 200 Ohm resistance. Mine works without it).
Beware for the soldering not to touch the external part of the connector
Verify the connection between D- and D+ through the connector
Reassemble the connector with the glue
Result
You will get "AC charging" on your device while using this connector between your car power supply and the charging cable of your device.
Before / After
Corrections and advices are of course welcome
Narkoa

Yep or if you have an s3 or s2 get siyah kernel then install stweaks and change charging speed on USB plug
Sent from my GT-I9300 using XDA Free mobile app

thatonerootuser said:
Yep or if you have an s3 or s2 get siyah kernel then install stweaks and change charging speed on USB plug
Sent from my GT-I9300 using XDA Free mobile app
Click to expand...
Click to collapse
Input: DC 12-24V and Output: DC 5.0V/1000mA . Nealy 1A output current is enough for most cell phones
Edit. Sorry the image is a little bit large . I dont' know how to limit it's display width on forum thread.

SallyChen said:
Input: DC 12-24V and Output: DC 5.0V/1000mA . Nealy 1A output current is enough for most cell phones
Edit. Sorry the image is a little bit large . I dont' know how to limit it's display width on forum thread.
Click to expand...
Click to collapse
very interesting trick...

[Q] Broken microUSB port, not charging or data working.

Hi,
I don't know if I'm posting in the right section, but here is the thing. I've got GeeksPhone Keon Developer Preview, It's a Firefox OS phone, but I've flashed an Android version on it. Everything worked great for about 6 months, and then the phone stopped charging, and it was also not detected by PC. When I plug it to a PC the phone does not detect it's plugged in also the PC does not detect the phone. I tried other microUSB cables and it's the same. I also tried flashing the Android again as I thought maybe it's software related but the problem still exists. Hopefully I installed recovery on it. I currently charge the battery externally, everything else works as expected.
Yesterday I decided to mess with the phone, as I don't have the warranty. I opened it up and checked if the phone actually has power when plugged to the charger. I noticed that the battery is powered so It is charging but the Android OS does not detect that, and decreases the battery via software. I think that the D+ or D- pins are broken, and I'm not sure if they are used for the phone to know if it's charging.
Here is the picture of the circuit board and my findings. Camera is not great so the picture is not that great also.
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0. Is the microUSB port, and I guess there is a problem with it, maybe D+ or D- pins got broken.
1. Those are D+ and D- resistors they are good I've tested them.
2. Those are battery pins. When I probed them when micro USB is plugged in they have power.
3. It's some kind of a IC for power, I think it's used to switch power to the battery from microUSB.
I don't have that good soldering skills so I couldn't resolder the microUSB port, so I'm asking if someone knows another approach to enable the charging via software, as software does not detect that battery is charging, when actually power from microUSB comes to the battery, and because of that it decreases the battery status on Android.
So I'm thinking if I can execute some command so I can trick the phone to believe it's charging, so the battery will charge and when I plug it out I execute the second command to turn off fake charging?
Thanks in advance!

Funny that you have this problem, I just fixed mine today that had the same problem. Basically the micro usb port stopped working because the parts soldered on the motherboard were loose after too much wiggling (cheap mtk phone I guess). I tried resoldering but its just too small, I could not event test the connexions with a multimeter. So I went to one of the million of asian cell phone shops in indonesia where I'm actually travelling and paid 5$ for a guy to fix it. They do it all the time and have expert fingers. Not my phone plugs perfectly, try to find one near your place, wherever that is
Sent from my P5 using XDA Free mobile app

vita94 said:
Yesterday I decided to mess with the phone, as I don't have the warranty. I opened it up and checked if the phone actually has power when plugged to the charger. I noticed that the battery is powered so It is charging but the Android OS does not detect that, and decreases the battery via software. I think that the D+ or D- pins are broken, and I'm not sure if they are used for the phone to know if it's charging.
Click to expand...
Click to collapse
What happens if you put a charge over those connections? It won't accept any? Or does it charge but the software isn't detecting it? Another way of fixing it would be making a separate charger for your battery only, of course that would mean that your phone is useless while charging. I'm pretty sure if you force a charge over it it will absorb it, but I wouldn't exactly know how you could check the battery status so that you don't overcharge it this way.

Galaxy note tab 10.1 GT-N801X Dead battery fix - Removal and hardwired

First time poster. Long time lurker. I'm hoping to add something useful to the community.
I have had my galaxy note 10.1 GT-N801X since launch but as of recently I have been struggling to find a use for it. A couple years ago it started to feel slow and clunky and then I started having problems with the battery. It has then been sitting in a box refusing to boot up until now. I found a couple places that sold replacement batteries online and the price wasn't too bad. Replacing the battery would have been a viable option however I have issues that the device cannot usually be used while charging and it takes a long time to fully charge. Even when the tablet was new I remember that battery live wasn't that great when using it intensively. For me the novelty of the pen had worn off, portability was less of a concern (As I have my phone for that), and the device feels slow and clunky and the screen is not that great by today's standards.
So I decided to fix it as cheaply as possible and design it to be timer for my home gym where it could also play YouTube videos and stream content from Plex web and Netflix if I wanted to. It would be close to an outlet at all times and I would not like to deal with the hassle of dead batteries and not being able to use it while charging. I would not be using the SPEN and I would not be using it for close up viewing tasks. So i decided to remove the old dead battery and hardwire in a plug.
*** CONTINUE AT YOUR OWN RISK *** I AM NOT AN EXPERT AND I AM GENUINELY SURPRISED SOMETHING SO SIMPLE WORKED ***
1. My first step was to open up the tablet and remove the old battery. It wasn't very hard and their are quite a few guides out there already. My only advice is to be careful when removing the connectors. After a couple years some of them have become quite delicate.
2. My next step was to get all of the parts prepared. I had an old 5V USB charging block that can output up to 2A. I had an old USB to micro USB cable that only had 2 wires on the inside. I cut off the micro usb end and stripped the wire ends. Then I cut the 5 wire battery connector off of the old batter and carefully stripped the end of the wires.
Just a note of caution, the original battery says it is 3.7V with a 4.2V max charging voltage. By using a 5V power block you are going to be overpowering the board. I thought I might immediately blow the board or lead to overheating. So far it is not a problem. At this point I have used it for about 12 hours in total and a max of 4 hours a time. But I don't leave it plugged in unattended just in case.
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3. Then I assembled all of the pieces. The salvaged plug from the old battery has 5 wires. The two red are the positive terminal and the 2 black are the negative terminals. I have no idea what the blue is but that is unimportant for the project. Before soldering I tested the outputs from the USB cable. Red was positive. White was negative. The output was 4.8V. I soldered the red wire from the USB cable to the two red wires of the battery cable harness and then soldered the white wire from the usb cable to the two black wires of the harness. I debated whether or not to attach the blue wire to the ground... but in the end I just left it untouched and everything worked out fine. I then covered the solder points with hot glue so they would not short on anything. It was a little bit too tight for electrical tape.
4. I then plugged the wiring harness back into the tablet and attached the wire to the back of the case with some hot glue so it couldn't be accidentally ripped out. I didn't bother putting the cover on the back of the tablet. I just put on the case and cut a small section out so the cable could pass freely through the side. I then powered it up and installed the newest version of lineageOS and my apps.
Finished project:
Update:
Here is the link to my imgur album imgur.com/a/IAl7n

Just post links without. www or http.
Users can add them