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
Related
As the title says!
I need a car charger and i don't know what to buy...
i wanted something that can last at least 6 months without having the cable damaged due to stretching
I use the cable of my TomTom One XL. Same voltage...
I like using my ebay-bought USB adapter and retractable mini-usb cable. Cuts down on the mess, and lets me charge other USB devices.
I use Motorola OEM that I got long time ago (4 years back with my first RAZR) - It works no problem
I also use regular USB cable with my wife's iPhone car charger and works fine too... So I guess Blackberry charger will do the same since I use Blackberry as home charger too occasionaly
Note that many of the miniusb chargers will not work consistently. Elsewhere here on the forum there are extensive details, but in short, HTC compliant chargers (meaning will charge 100% of the time) short pins 4-5 on the mini usb port. This is not implemented in normal mini usb chargers. The normal (non-HTC compliant) will usually work but not always.
Read about a small percentage that seemed to have trouble (RLOD related trouble) from cheap or non-HTC chargers, so I got a true HTC OEM at www.tiltdepot.com. Best $25 I've spent.
I have used a tomtom car(borrowed from my mom) charger too, wich is 2.0 Ah, but found out the HTC charger (same 2.0 Ah same voltage) charged a lot better than the tomtom one. After one hour(started with a 3/4 charged battary) the tomtom was pretty much the same(3/4) and the HTC one was fully charged.
Yep... With the TomTom charger I believe the charging current is limited because the HTC phone sees it as potentially a data connection. The HTC charger has short between pins 4 and 5 addresses that. Hard to beat the HTC charger.
Naztech Premium LCD Display Car Charger:
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http://www.naztech.com/products.php?id_prod=40
The "11 Foot Heavy-Duty Cord" is nice... it's coiled tightly, and long enough to get to wherever you need to in the front of the cab, be it a center console or a seat. The digital display tells you how long it's been charging, and changes color when still charging the device (blue is standby, orange is charging). Nothing beats the Naztech for a USB car charger. I have the silver one, but it looks like the newer ones are black; you can probably get your choice of either if you get one off of Ebay like I did.
They have lots of other cool products for phones, too.
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...
I bought one of these on eBay thinking that I was a genius.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180399428266#ht_867wt_1132
Input: DC12V-24V
Output: DC5.0v/500mA
You can use it in car to charger any devices(for example,many mp3,mp4,mp5,cell phone) with a standard USB2.0 port.
Before you bid,you should make sure that is what you want.Thank you very much.
Click to expand...
Click to collapse
It doesn't seem like it's keeping my phone charged, sometimes it seems like it runs off of the car's power, but I never seem to have it charge.
It charges my MP3 player just fine.
Is it an issue with my ROM, the cable, the adapter?
Anybody with knowledge on this subject would be appreciated.
Thanks so much!
that will work.. to charge the phone real slowly.. unless you using wifi or 3g. then just like standard usb, 500mAh is going to have a hard time keeping up with the drain. Screen off, 3g off, wifi off it'll still charge just not as fast as the OEM charger.
The phone's OEM charger is actually 1Ah, so basically twice the juice.
edit: I use my old motorola car charger, and just like your saying, it takes me 20 minutes in standby to gain 4% charge. Lock screen should say it's charging and what the battery % is.
Ah, then I need to get a new charger.
When I search for "usb car 1Ah" I get no results.
I like the USB charger because it allows me to use the splitter.
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That way I can plug in the audio into my car and keep it charged. (Except it's not charging. )
What's my best route to go?
use this one:
I am not sure what a different splitter will do for you. However I searched and found all kinds of 1000mA car chargers.
http://www.meritline.com/square-usb-car-charger-black-938---p-28879.aspx?source=fghdac
Here is one that is cig adapter to USB...
http://www.sourcingmap.com/3in1-universal-usb-car-charger-kit-for-mobile-phone-p-35405.html
http://www.bedoxinc.com/12vdcauplto5.html
My search was: usb car charger 1000ma
Edit:
That was a Google product search.
The cig to usb are always the best, they seem to last a lot longer too (more durable). I always seem to break the regular ones after a few months using them.
Note to people;
A != Ah
Ah = Amp HOUR
A = Amp
1 amp for 1 hour = 1 Ah.
An amp is the INSTANTANEOUS current.
An amp hour is the TOTAL CHARGE TRANSFERRED over a period of time.
What about a 2000mA USB charger?
Is there an amount that will be too much and break the phone?
livejamie said:
What about a 2000mA USB charger?
Is there an amount that will be too much and break the phone?
Click to expand...
Click to collapse
No. The phone will only pull as many amps as it needs.
However, if you do get too crazy with amperage, I suppose it would be possible to blow a fuse in your car if you *do* ever charge/power something that can max the amperage out. It would depend on what else is drawing current on the fuse that your cig lighter is on and what the size of the fuse is. You could use a multimeter to measure the amperage draw while everything on the cig. lighter fuse is running to see how much more amps you could use before causing the fuse to blow. Check your car manual for the info on what is running on the same circuit as the cig. lighter.
I wouldn't try to push too much power into the phone than what the phone is rated, you could risk damaging the phone and/or the battery. IMO its not worth the risk.
phatmanxxl said:
I wouldn't try to push too much power into the phone than what the phone is rated, you could risk damaging the phone and/or the battery. IMO its not worth the risk.
Click to expand...
Click to collapse
The cigarette adapter does not "push" the charge into the phone. The phone draws the current that it needs and the rest is unused. Check out "Ohm's Law."
V=IR
5v = 1000mA x 5ohms
The resistance is fixed, and the voltage is regulated. Therefore the current cannot go over 1000mA.
However, if you were to get a 6v/2000mA charger, the phone would attempt to draw 1200mA and possibly fry itself.
6v = 1200mA x 5ohms
With that said, the 5v/1000mA charger is like a double safety. Taking away the max mA draw safety won't cause issues, unless something goes wrong in the voltage regulation process.
For maximum protection 5v/1000mA is the recommended charger.
Thanks for the help everybody!
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...
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.