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I tried swapping out the USB cable that came with my nexus 7 with a longer usb cable (still using the same charger though edit: by that, i mean the ASUS charger that came with the N7). It doesn't seem to be charging though, even though it says 'charging' on the screen. When i was using the nexus 7 while plugged in, i actually lost 1% charge after using it for like 30 or so minutes.
I think i grabbed this cable off Ebay. It had no trouble charging my phone. Are there different grades of USB cables or something?
By same charger do you mean the one it came with? The 2 amps charger. Sorry I had to clear that bit up. I think longer cables creates more resistence but I'm not sure if the cable length is significant enough stop charging. I have no idea about grades of USB cables though maybe someone can elaborate on that.
Summerfly said:
By same charger do you mean the one it came with? The 2 amps charger. Sorry I had to clear that bit up. I think longer cables creates more resistence but I'm not sure if the cable length is significant enough stop charging. I have no idea about grades of USB cables though maybe someone can elaborate on that.
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Yes, the ASUS charger it came with, i plugged in the 6 foot microusb cable i bought off ebay into it.
MFister said:
Yes, the ASUS charger it came with, i plugged in the 6 foot microusb cable i bought off ebay into it.
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Okay, 6 foot cable doesn't sound excessively long. I have to ask what were you doing on it while charging and what brightness setting was the screen at. Maybe you were draining more power than the charger can provide?
This is pretty common. The stock cable has larger conductors, as I assume other 2 amp chargers come with, and standard cables are sensed somehow and charging current is limited. Try finding a 22awg cable, I think it will work.
I use a USB extender since I don't have any outlets near my bed. I use a cable rated for USB 2.0 and haven't had any problems. I have had problems with cables that aren't. The Motorola USB cables are rated for 2.0 and they all work fine for me with no problems.
burpootus said:
This is pretty common. The stock cable has larger conductors, as I assume other 2 amp chargers come with, and standard cables are sensed somehow and charging current is limited. Try finding a 22awg cable, I think it will work.
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Thanks, i assume this cable that's 28/24 awg would work?
http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=8643&seq=1&format=2
I use a cable extender, but I insert the original stock cable into the tablet (not the charger). It appears to recognise that and charge at the correct rate.
I've tried using a usb extender to charge with the asus charger and the Asus USB cable and checking with battery graph it charges much slower compared to using just the Asus cable.
People with eyesight better than mine will see that the micro USB socket has 5 pins and the Nexus looks at the 5th pin to decide what is connected and what the connected device is allowed to do. The pin can be grounded, not connected (floating) or can be connected to ground via I think 3 fixed resistances. Google for USB on the go. I think that is the standard adopted by Asus and the cable doesn't comply.
I'm using a nook 1/2 cable I got with a car charger for the nooktablet
It works and is longer then the stock cable it came with.
Sent from my Nexus 7 using Tapatalk 2
EE here. I just ran into this issue recently, so I'll share what I learned. Grab a multimeter and measure the resistance of the cable. Check all 4 pins just in case one of them is worse than another.
In my case, I had a really horrible USB extension cable. It measured about 4 Ohms. 4 Ohms is low enough for a multimeter to pass a continuity test, but do out the math:
V = I * R
V = 2A * 8 Ohms (4 Ohms on VCC, 4 Ohms back on GND)
V = 16V.
16 volts?? Where does 16V come from? Short answer: It doesn't. If 2A were actually flowing, the USB cable would have a 16V drop across it. It doesn't though, which tells us that 2A is not flowing. 1A is also not flowing, since that would still be 8V.
0.5 Ohms is a good estimate for a MAXIMUM resistance for a USB charging cable. That's a 1V drop at 2A, meaning the phone is only getting ~4V. That explains why the USB cable that comes with the Nexus 7 is so darn short - it comes in at around 0.1 Ohms (or perhaps less, that's about the limit of what I can accurately measure)
Wanted to get a longer USB cable that will work the Asus adapter, any links?
Thanks.
came across this thread while investigating a strange thing in charging my 4400mah extended battery of my s3.
I have a 5v 1A stock samsung charger with an extension cable i was always using to charge my old phones with a less capacity battery (mugen 3200mah)
This night i spent i wasnt ble to get a full charge from 5% to 100% in 8 hours and this sounds more than strange, but yet understandable.
i will try timings with the stock cable without extension and i'll come back...
Or will it be an accessory which takes another 6 months to hit the market and cost another $100+?
versd said:
Or will it be an accessory which takes another 6 months to hit the market and cost another $100+?
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That would be awesome if it did come with it, but I highly doubt it will. They will probably charge some ridiculous amount of money for it. This is what the play store says is in the box..
What's In The Box
Nexus 4 phone
USB sync/charge cable
AC Adapter and cable
SIM ejection tool
Safety and Warranty information
Quick start guide
No. It won't.
my opinion is that it will cost around $30-50. Wouldn't mind paying $30 for it, but not a penny more.
I believe the Nexus 4 uses standard Qi charging technology. No word on the official Nexus charging orb, but if you're just looking for a wireless charging solution, you can find charging mats on Amazon etc. Most of the ones I've seen are fairly expensive though.
USB sync/charge cable
AC Adapter and cable
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Not sure what this means. USB cable (micro / usb) but then AC adapter and cable?
theoneofgod said:
Not sure what this means. USB cable (micro / usb) but then AC adapter and cable?
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I would assume it's just the standard charger that comes with every other phone
emc523 said:
I believe the Nexus 4 uses standard Qi charging technology. No word on the official Nexus charging orb, but if you're just looking for a wireless charging solution, you can find charging mats on Amazon etc. Most of the ones I've seen are fairly expensive though.
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Anyone have any in depth knowledge of the inductive charging?
Will any inductive power charging mat work? Or does it have to have something specific to the lgnexus?
versd said:
Anyone have any in depth knowledge of the inductive charging?
Will any inductive power charging mat work? Or does it have to have something specific to the lgnexus?
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The charger has to use the Qi standard for wireless charging. Some say that the old, now very cheap, Palm Touchstones may work but there is no official word on whether they use Qi. We'll just have to wait and see.
raze599 said:
The charger has to use the Qi standard for wireless charging. Some say that the old, now very cheap, Palm Touchstones may work but there is no official word on whether they use Qi. We'll just have to wait and see.
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Do you have a source to state that the qi standard charging is used?
Thanks!
versd said:
Do you have a source to state that the qi standard charging is used?
Thanks!
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Here are the sources:
http://www.phonesreview.co.uk/2012/10/30/nexus-4-accessories-new-google-wireless-charging-orb/
Paragraph 3.
http://www.theregister.co.uk/2012/11/01/nexus_4_qi/
Also paragraph 3.
raze599 said:
Here are the sources:
http://www.phonesreview.co.uk/2012/10/30/nexus-4-accessories-new-google-wireless-charging-orb/
Paragraph 3.
http://www.theregister.co.uk/2012/11/01/nexus_4_qi/
Also paragraph 3.
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Thanks.
My nexus so far seems great but i have this issue and idk if its a defect or idk? When i go to charge my phone with the stock AC adapter and even a HTC adapter it starts charging on AC then sometimes switches to USB and charges slower. And I have to like plug it in and out a few times for it to finally catch as AC its super annoying and my GNex never had that issue. And when i want to use the phone on AC the Charge Drops significantly sometimes discharging and im not even doing anything intensive. Does anyone have this issue? Is it a problem with the USB cable maybe? Or do you think this is a defect? Because its about to be 14 days and i dont have much left to get an RMA cause its what im considering and if I need it i dont have 380 dollars in my bank account either if i do need it so idk how that would work. Any help would be appreciated Thanks!
It lowers the incoming current, by dropping to usb charge, to help keep the battery cooler. They seem to be really trying to keep the battery temp down on this thing.
Ordered my Nexus 4 on the 13th. Still waiting.
Really? Do you know the temps? Or does anyone? Cause sometimes it changes to USB after plugging it in for like 5 mins and i wouldnt think it gets that hot that quick. And when i finally get the AC to seem to stick the temps go up to 30-35 degrees celcius as normal and im getting around 850mah and it doesn't drop to usb charging it just drops current sometimes mainly when im using it obviously. So idk if it really is what you say or maybe someone could elaborate more?
I just want to get to the bottom of this issue so to know if i need to get an RMA :/
I forgot to mention that it also seems to randomly switch between AC/USB/UNPLUGGED really fast sometimes and i have to unplug and replug to get a charge I have no idea why.. I really want to know if its a software issue or hardware. Thats my main concern.
Woww this makes sense Ive been trying to figure out why this freaking thing was taking so long to charge. this reminds me of the galaxy s and how long that thing took. hopefully this is a software bug and they can get this thing worked out
Sent from my Nexus 4 using Tapatalk 2
ajoerivera said:
Woww this makes sense Ive been trying to figure out why this freaking thing was taking so long to charge. this reminds me of the galaxy s and how long that thing took. hopefully this is a software bug and they can get this thing worked out
Sent from my Nexus 4 using Tapatalk 2
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Yea idk if its a hardware or software bug im hoping software but i may just do an RMA incase if i can ill call google tommorow. And if you want to check how your phone is charging you can download Battery Monitor Widget it shows the mah and all that.
I have that same problem with the charger that came in the box.once it goes to USB it take forever to charge but when I use the charger from my gnex it stays on ac and charges really fast not once does it goes to USB.so I tried the N4 charger on my HTC thunderbolt and gnex and both would go into USB mode and charge really slow.
Pito2k6 said:
I have that same problem with the charger that came in the box.once it goes to USB it take forever to charge but when I use the charger from my gnex it stays on ac and charges really fast not once does it goes to USB.so I tried the N4 charger on my HTC thunderbolt and gnex and both would go into USB mode and charge really slow.
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For what it's worth, my Nexus 4 *NEVER* charges in an AC mode using the OEM charging plug, regardless of which power point / cable I use with it. And to charge from 'critical' to 100% took about 7 hours last night. Wtf.
It's been RMA'd as I don't believe this to be correct behaviour. Perhaps also related, the USB computer connection has stopped working. It'll charge via USB but won't connect to any computer.
Pito2k6 said:
I have that same problem with the charger that came in the box.once it goes to USB it take forever to charge but when I use the charger from my gnex it stays on ac and charges really fast not once does it goes to USB.so I tried the N4 charger on my HTC thunderbolt and gnex and both would go into USB mode and charge really slow.
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Hmm so did you use the Gnex charger like the USB cable and AC adapter? Cause ive just used the ac adapters with the N4 Lg USB cable. It makes me think that the USB cable is **** to. I need to find another USB to test this out.
andyvaughan said:
For what it's worth, my Nexus 4 *NEVER* charges in an AC mode using the OEM charging plug, regardless of which power point / cable I use with it. And to charge from 'critical' to 100% took about 7 hours last night. Wtf.
It's been RMA'd as I don't believe this to be correct behaviour. Perhaps also related, the USB computer connection has stopped working. It'll charge via USB but won't connect to any computer.
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Did you try a differnt USB and AC adpter like the previous post said? I just want to make sure cause if not im gonna RMA
Nocturnal86 said:
Did you try a differnt USB and AC adpter like the previous post said? I just want to make sure cause if not im gonna RMA
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Yep, tried a whole bunch of different power sockets, usb charger plugs and cables. Still screwed. The more I read, the more its obvious that the devices behaviour isn't correct.
You should send it back because mine charges fine. It takes 2-3 hours to charge mine to full from empty. I'm using the charger and USB cable that came with the phone.
I'm actually facing the same thing, I slept for 3 hours and woke up to my phone being only 60% charged. I tried plugging it in and out a couple of times, and now its back to AC and not switching to USB anymore.
In using Franco kernel and even enabling USB fast charge doesn't keep it from showing USB.
Sent from my Nexus 4 using Tapatalk 2
Nocturnal86 said:
Hmm so did you use the Gnex charger like the USB cable and AC adapter? Cause ive just used the ac adapters with the N4 Lg USB cable. It makes me think that the USB cable is **** to. I need to find another USB to test this out.
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I was looking at my LG charger and it seems to be missing one of the gold connectors on the male part of the cable Idk if this is normal but my gnex has all the gold connectors.
Pito2k6 said:
I was looking at my LG charger and it seems to be missing one of the gold connectors on the male part of the cable Idk if this is normal but my gnex has all the gold connectors.
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Yea mine is missing it to I wonder if that is why? And i just got my RAVpower external battery and that usb has all the pins and i tried to charge my phone with the lg brick and the ravpower usb and it seems to charge fine goes to ac every time. So im really wondering if its the LG USB that i got and it being faulty or not. I need to get another USB to test this out. Cause i dont want to swap out an entire phone for just a usb..
I've noticed mine charges as USB when using the stock LG charger. I had put it down to the 3 metre USB cable it was attached to, but I guess it's just a pants charger.
I just started having the same problem since Sunday. Had the phone for 2wks now. I had the same problem with my gs2. I really don't like these adaptor charger now a days. I go for the straight wall charger. Seems to work best. I think it's better because it doesn't convert to a usb cord as well, I don't know but I went ahead and ordered this one. http://pages.ebay.com/link/?nav=item.view&id=150959459340 should be here Friday. it says original OEM charger for E960 nexus 4. We'll see.. I suggest direct wall charger instead of those USB adaptor that come with phones now.
I just looked at my USB charger from lg, it has 4 gold pins. Seems like they're all there, how many are there suppose to be??
Sent from my Nexus 4
I'm not having the issue ... But it happened to me when I had my s3 I would use oem Samsung home charger and it would charge for a bit and it would stop ...
Sent from my Nexus 4 using XDA Premium HD app
noodles2224 said:
I just started having the same problem since Sunday. Had the phone for 2wks now. I had the same problem with my gs2. I really don't like these adaptor charger now a days. I go for the straight wall charger. Seems to work best. I think it's better because it doesn't convert to a usb cord as well, I don't know but I went ahead and ordered this one. http://pages.ebay.com/link/?nav=item.view&id=150959459340 should be here Friday. it says original OEM charger for E960 nexus 4. We'll see.. I suggest direct wall charger instead of those USB adaptor that come with phones now.
I just looked at my USB charger from lg, it has 4 gold pins. Seems like they're all there, how many are there suppose to be??
Sent from my Nexus 4
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That actually sounds like a good idea and should hopefully work! I need to order one. Still debating on Getting an RMA cause i dont want **** phone or worse phone..
Correction And it should have like 2 gold outer pins and 3 gold inner pins and mine and I guess a few other people have the outer pins but only 2 inner pins im missing the left most inner pin.
My phone only goes into charging mode when I plug it in to my computer. Anyone have this problem?
tawalla said:
My phone only goes into charging mode when I plug it in to my computer. Anyone have this problem?
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Have not had this problem myself. Try another USB charger? Just about anything that's 500mA will work (albeit not nearly as fast as the 2.0 amp charger that came with your phone).
I suspect your charger.
Aou said:
Have not had this problem myself. Try another USB charger? Just about anything that's 500mA will work (albeit not nearly as fast as the 2.0 amp charger that came with your phone).
I suspect your charger.
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It was the cable. I really didn't suspect it would be that since I have barely used it and I've only had it for two weeks. Thanks!
tawalla said:
It was the cable. I really didn't suspect it would be that since I have barely used it and I've only had it for two weeks. Thanks!
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Good to hear it was a simple solution. You might check with the place you purchased it from to see if they will provide a new cable. I guess we can just be glad you didn't find out about the cable during the middle of an Odin flash...
Aou said:
Good to hear it was a simple solution. You might check with the place you purchased it from to see if they will provide a new cable. I guess we can just be glad you didn't find out about the cable during the middle of an Odin flash...
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No kidding. That would hurt a little
I am now having this problem after my phone got wet. No AC or DC chargers will work but the phone will always charge from a computer or even the USB interface of a car.
Even if I can get an AC or DC charger to be recognized, the phone will show as charging but the battery will continue to decline.
It is making no sense to me though I assume getting the phone wet partially fried something.
Yeah the voltage is increased to charge you battery when on AC power, at the kernel level. USB voltage is lower. So i'd say surely fried, and will no doubt stop working sooner or later.
I know that on my s2 I had an issue where it would say its charging and when I woke up in the morning no charge at all. The pin/row of pins or bar if you will would bend down and not make good contact. I used a tooth pick to pry up on it every time it did that.
Jnewell05 said:
Yeah the voltage is increased to charge you battery when on AC power, at the kernel level. USB voltage is lower. So i'd say surely fried, and will no doubt stop working sooner or later.
I know that on my s2 I had an issue where it would say its charging and when I woke up in the morning no charge at all. The pin/row of pins or bar if you will would bend down and not make good contact. I used a tooth pick to pry up on it every time it did that.
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Click to collapse
Thanks. I didn't realize that the charging port was removable on the S4 so I swapped that out and all is fine now. :good:
Ummm... No its not the voltage. It is the ID pin. The voltage stays the same. The only actual difference is the milliamp mAH output of the charger. A normal USB plug has 500mA our charger has 2000. How the phone tells the difference? The 2 data pins inside he charger are shorted together. The voltage always stays the same.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
Little help chaps.
Ok i've just bought this http://www.ebay.co.uk/itm/390566738301
I presumed (not sure if rightly or wrongly) that it would be sufficient to charge my Nexus 4
I'm using an older usb cable I've got to charge it in my car however if i'm using navigation then the battery still decreases.
I've got a funny feeling that the cable is the culprit but i'm not 100% sure.
Is there anyway to monitor how much juice your phone is getting from the charge?
P.S in the battery monitor screen it says AC not USB
Thanks in advance for any help
Stret
Battery monitor widget pro. It monitors the mA that's being used, mV, etc. Maybe the phone is pulling more mA than the charger is supplying.
You need to go into your battery settings/status while your phone is plugged into your car charger.
It will show one of two statuses:
Charging(AC) and Charching(USB)
If it is showing charging(USB), then the phone is detecting a false data connection. This can be solved by taking apart your USB charger and soldering the middle two pins of the USB. These pins are the Data(+) and Data(-) pins. I attached an image of the two Data pins soldered together on the usb charger.
If it is showing Charging(AC), then your USB charger is not pushing enough mA to charge your phone. Most cheap car USB chargers are in the 500 mA to 700 mA range. The stock USB wall charger that comes with your Nexus 4 is 5V 1200mA.
t989BeLikeItDo said:
You need to go into your battery settings/status while your phone is plugged into your car charger.
It will show one of two statuses:
Charging(AC) and Charching(USB)
If it is showing charging(USB), then the phone is detecting a false data connection. This can be solved by taking apart your USB charger and soldering the middle two pins of the USB. These pins are the Data(+) and Data(-) pins. I attached an image of the two Data pins soldered together on the usb charger.
If it is showing Charging(AC), then your USB charger is not pushing enough mA to charge your phone. Most cheap car USB chargers are in the 500 mA to 700 mA range. The stock USB wall charger that comes with your Nexus 4 is 5V 1200mA.
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Yeah it definitely shows AC was the first thing I checked, so what your saying is that link o posted above is actaully a false claim to how much power it knocks out?
Stret
Stretlow said:
Yeah it definitely shows AC was the first thing I checked, so what your saying is that link o posted above is actaully a false claim to how much power it knocks out?
Stret
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Hard to say. From my experience, you get what you pay for. A USB charger that cost less than 2 GBP seems unlikely to support the kind of mA throughput that the Nexus 4 requires.
Some ways to check this are to check the power supply and draw through a battery monitoring app, use a different USB cable or the USB cable that came with your Nexus 4, or take apart the USB charger and inspect the hardware to see if it actually is built to support a 2A supply. That last one is a bit of a headache.
Here is an iFixit teardown of a similar USB charger which goes into detail about some of the working parts of a car USB charger.
To quote the final part of the iFixit teardown:
Quite simply, the device is a rebadged 500mA or 750mA USB charger at best. It is NOT 1A capable, despite what the sticker on the body says.
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Good luck!
t989BeLikeItDo said:
Hard to say. From my experience when it goes about this type of gear is that you get what you pay or. For a USB charger that cost less than 2 GBP it seems unlikely that it would support the kind of mA throughput that the Nexus 4 requires.
Some ways to check this is to check the power supply and draw through a battery monitoring app, use a different USB cable or the USB cable that came with your Nexus 4, or take apart the USB charger and inspect the hardware to see if it actually is built to support a 2A supply. That last one is a bit of a headache.
Here is an iFixit teardown of a similar USB charger which goes into detail about some of the working parts of a car USB charger.
Good luck!
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Thanks for your help mate
Stretlow said:
Thanks for your help mate
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No problem! You should try and remember that the Nexus 4 is a pretty sophisticated piece of hardware. I'm not advocating that you go out and spend 20 GBP on equipment, but you don't want to use a cheap generic piece of trash to interface that electrical connection. The build quality of your charger can put your handset at risk to being damaged by electrical shorts and/or heat.
I would liken it to parking your sports car in a cheap parking garage on the bad side of town. Sure, you can do it, but there are risks involved!