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Hello all,
So I just bought a new charger (just a wall charger) and now when I plug my TB in, the screen does not respond to anything! I have to take the plug out to work my screen. It is completely unresponsive (regardless of where I'm at on the screen) while charging. As soon as I unplug it, it's fine.
Any ideas?
Where did you buy the charger from? Some crappy no-name/ebay/cheap chargers do that because they are crap. I had bought a cheap charger for my HTC Touch Pro 2 and that same thing happened, used the regular charger, no problems at all.
I know when I used the charger and cable that came with the thunderbolt, it used to become laggy or less responsive. Not terrible, but I could notice it. It was like all the memory was tied up. It doesn't do it anymore though. I rarely use the original cable and charger anyways.
g00s3y said:
Where did you buy the charger from? Some crappy no-name/ebay/cheap chargers do that because they are crap. I had bought a cheap charger for my HTC Touch Pro 2 and that same thing happened, used the regular charger, no problems at all.
Click to expand...
Click to collapse
Indeed. The cheap $1.00 chargers may also harm your battery.
daniel178 said:
Hello all,
So I just bought a new charger (just a wall charger) and now when I plug my TB in, the screen does not respond to anything! I have to take the plug out to work my screen. It is completely unresponsive (regardless of where I'm at on the screen) while charging. As soon as I unplug it, it's fine.
Any ideas?
Click to expand...
Click to collapse
Today I tried to charge my phone at work using my original.al charger that I always use and while it was plugged in, the screen wouldn't respond at all. I thought the phone was the problem but I later troubleshot it to low voltage from the extension cord, not my charger.
There are in fact quite a few micro-usb chargers that cause the screen to become unresponsive when plugged in.. This doesn't necessarily mean that the charger is crap, but it's best to use your manufacturer-approved (oem) chargers whenever possible. I work in wireless, and although our supplier is reputable, their generic chargers don't work well with the Atrix & a few other smartphones. I use them only when necessary, but do your phone a favor & stick to manufacturer chargers.
I had this problem, when I use a properly grounded surge protector the problem doesn't happen any more. It also happens to me when I charge out of my old macbook pro which tends to have a 'staticy' feel to it.
zoso28 said:
There are in fact quite a few micro-usb chargers that cause the screen to become unresponsive when plugged in.. This doesn't necessarily mean that the charger is crap, but it's best to use your manufacturer-approved (oem) chargers whenever possible...
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Click to collapse
You're two months late with your incorrect post. There's a well defined standard for USB chargers, which the TB follows. Non-OEM ones work every bit as well as the HTC one as long as they, too, follow the standard and provide clean power.
mike.s said:
You're two months late with your incorrect post. There's a well defined standard for USB chargers, which the TB follows. Non-OEM ones work every bit as well as the HTC one as long as they, too, follow the standard and provide clean power.
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Sorry my timing bothered you I was just browsing around for info about the touchscreen issues i've seen. I'm well aware of the standard, 5 +/- 0.25 volts 500–900 mA, and they all seem to charge perfectly well but certain phone/charger combos cause some screens to lag & I just wondered why. For example the motorola adapters all seem to be 5.1 volts @ 850mA, whereas samsung adapters are 5.0 volts @ 700 mA, and the samsungs charge fine on our standard 5/500's while the moto's lag.
zoso28 said:
SI'm well aware of the standard, 5 +/- 0.25 volts 500–900 mA, and they all seem to charge perfectly well but certain phone/charger combos cause some screens to lag & I just wondered why. For example the motorola adapters all seem to be 5.1 volts @ 850mA, whereas samsung adapters are 5.0 volts @ 700 mA, and the samsungs charge fine on our standard 5/500's while the moto's lag.
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Click to collapse
It's not clear where the "500-900 mA" and "standard 5/500" figures you give come from. Neither is from the USB Battery Charging Specification.
The spec supports up to a 1.5 A current from a Dedicated Charging Port. The HTC charger is rated at 1 A, and it seems the TB will use all of it. I've seen charging rates of 800 mA, with the phone also running screen, GPS, and more.
Cheap ones, regardless of output, may be poorly filtered with a significant AC component. Those are the ones which will really cause problems.
Hi everyone.
My Nexus S touchscreen has stopped working while charging. The charger is original, and I havent had any problems before this. The screen does work when charge it through my computer. Anyone have any idea what the problem might be? I updated to 2.3.4 around two week ago, but I've charged the phone after the update without the touchscreen dying.
I read about that problem a good number of times now, most often with third-party chargers, though. It seems, that the touch screen is very susceptible to interference on the power source (which is not really surprising, considering the touch sensor technology).
Maybe your wall adapter is just faulty or out of spec.
Something I just thought of: Do you have any power line communication devices? If so, try to unplug all of them and test again.
Try a few different power outlets, too, maybe even in different buildings.
If its not a real charger it won't work. Alot of these phones only will work with OEM charges from Samsung or Motorola chargers
Sent from my Nexus S using XDA App
I would love to know what you mean by "real charger".
One of my chargers is very slightly over voltage (5.2V) and my touchscreen becomes erratic when I use it - I try to keep using it to a bare minimum. Personally I'd stop using that charger. You never know what long term damage it may be causing.
I really don't mean to challenge your measurement, more so since I don't know how you got it, but I find it anything but trivial to measure voltages to any degree of accuracy.
Since I can't afford laboratory equipment with accuracy in the ppm range, I am stuck with a cheap hand multimeter that is rated at 1% plus a few counts, but only inside one year from manufacture when stored the whole time in defined conditions. The next best thing would have been a 150 Euro version with about 0.5%. That means, that the least significant number in the reading is all but useless.
And we are not even talking about ripple, interference and forward leakage. Try measuring your charger's +5V and 0V to earth. You will probably see significant readings.
Anyway, what I am trying to say is: The average user will have to trust the rating on the label.
And the 5.2V you measured are still inside the specification range, which is 5V plus minus 5%, so from 4.75V to 5.25V, if I remember correctly.
If I felt adventurous and had the problem I might try decoupling everything a bit with some big ultralowESR capacitors near the phone. That should give a lowpass together with the cable resistance.
Hi guys,
I have also come across this behavior - I was charging my Nexus S using the supplied USB cable and the screen hasn't been responding nearly at all.
In my case, this was caused by the notebook charger - when I unplugged it (ran on battery), everything was fine again. Therefore I blame my charger to be a source of some sort of interference.
If you are on a laptop, maybe you could try that. If this is a case of the outlet charger, maybe it is not working properly (to be replaced?)
Hope this helps
same here... wt*
okay im using some Chinese charger but what is doing with the display ...
One of the things I loved most about my Nexus 4 was just how quickly it charged. And unlike my SGSII before it, it could even gain a charge while being actively used for Waze. Really great.
With the 5 I'm back to where I was. And thanks to tools I picked up during the 4, I'm able to see why more easily. Seems on the exact same chargers I used my 4 on, I'm easily pulling 400+mA less than the 4 did from the same device and same cable.
I haven't had time to draw a correlation yet, but last night at home on a multi-out adapter from Monoprice I was able to pull over 1200mA which is more than I've ever seen ANY of my devices pull before. But today, on the same model at my office, but with a different cable, I'm pulling around 200mA. Same as what I was getting in my car, which would frequently dip into the negatives, and that was WITHOUT Waze running. Also of note, in ALL of these locations it's being listed as "USB plugged" instead of "AC plugged." I'd say that accounts for the difference there, but the 1200mA draw was listed the same way, so I doubt it.
So, has anyone else noticed this yet and found any correlations between devices, cables, etc., so we can figure this out? Using more power than it takes in will not be something I can survive with and will definitely make this phone a less-than-ideal upgrade over the 4 in the battery life department. But it's pretty clear it's not impossible to get a good charge.
(and yes, before anyone asks, all of my adapters have jacks with a minimum of 1A out, and each also has a 2.1A port. Surprisingly, unlike my 4 which tended to draw LESS power from the 2.1A port, the 5 appears to be unconcerned by the difference, pulling the same poor number from both)
Yes, i agree with you. I just check today, charging my phone from the pc and it seems fast charge isn't doing its thing.
duckied said:
Yes, i agree with you. I just check today, charging my phone from the pc and it seems fast boot isn't doing its thing.
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Well, I haven't even dared test it from a PC yet. All I can say is from wall warts and car chargers it's terrible. I can't imagine how bad it is from the limited PC ports. Although it's probably exactly the same, since it seems to be identifying all my wall outlets as USB connections.
using my lg g2 charger and it charges my nexus 5 super fast. 1 hour charge will give me almost full battery
spadeace9 said:
using my lg g2 charger and it charges my nexus 5 super fast. 1 hour charge will give me almost full battery
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Not too surprising. I've read other reports that it charges nice and fast with the stock charger, which is likely the same as the G2 charger since they share most of the same hardware. But that doesn't help with car charging or those of us who've consolidated into multi-port chargers.
When I get home I'm going to mix and match some cables and devices and try to narrow in a bit more. This sounds like the Nexus 7 (2012) goose chase all over again.
The USB/AC detection is done with a definied resistance. Some chargers don't meet those exact resistances (cheap resistors have a big tolerance) -> the phone detects it as USB.
The cable can make big difference, I've tested several different cables on the N4 once, charging rate was between 600mA and ~1100mA (which should be the max) on the same charger.
Maybe the resistance in the charger is right inside the resistance tolerance, so the slight difference in resistance between the cables is enough.
Since the N4 most probably uses a different charge IC than the N5 (I haven't checked tho), it could be that the N4 had a wider tolerance than the N5.
What should help are those charge cables , the one I'm using from Porta Pow can only be used for charging therefore ignoring the charger resistance -> phone should always detect it as AC(even on a PC). Another good thing about those cables is the big wire diameter. Or a kernel where you can force AC charging regardless of the actual source.("fast charge")
That all sounds pretty logical. Considering I got much better results with the Monoprice premium cables I used last night (which oddly, are much THINNER than the cheaper ones), I'm going to experiment with those this evening and see if that makes all the difference.
As for kernels, I'm not planning to root this one if I can help it. I managed to get through the life of my 4 without rooting, too. I know it's heresy on XDA not to root, and until I got Nexus devices I would have agreed. But since stock Jelly Bean I haven't felt that burning need to "take back" control of my phone. I seem to already have plenty.
I observed the same inconsistencies with the N5's charging behavior and did some qualitative tests. I've attached a screenshot with my findings.
The phone is clearly capable of charging rapidly. My primary focus is getting a high current off the car charger. Is there a way to force AC charging mode vs. USB charging, or should I focus on more quality cables / adapters?
Just did some additional testing of my own and found some interesting results. I didn't take perfect notes, but here's what I got:
With the Monoprice 4-port Wall Charger 2.1A 8856:
Cheap Monoprice cable: bad charging, fluctuating between -80A and 200A.
Cheap unknown cable: same as above.
Monoprice premium 3ft cable: 900-1200A.
Monoprice premium 6ft cable: 700-900A.
With the Monoprice 1A car charger 6765:
Bad charging with all cables tried.
With the Monoprice 2.1A car charger 8858:
Bad charging with all cables tried, with exception of Monoprice premium 3ft cable which had same low end, but occasionally bumped over 300A.
With 3.1 (split between two ports) charger purchased on Amazon (my standby for my Nexus 4:
Bad charging with all cables tried.
With Monoprice 2-port USB Car Charger 3.1A 10071:
Cheap Monoprice cable: Bad charging
Cheap unknown cable: Bad charging
Monoprice premium 3ft cable: 700-900A
So it looks like high-end Monoprice paired with high-end Monoprice pays off. Unfortunately there's a rather serious catch with model 10071: it KILLS GPS. At least it did on my Nexus 4, and other reviews reported it as well. I can't be certain yet about it on the 5, but the little experimenting I did in the parking lot showed some anomalies I didn't like. Which means I apparently get to choose between GPS killing my battery, or charging my battery killing my GPS.
Also tried Nexus 7 2012 charger with its own cable and got bad charging, too.
TurboFool said:
Just did some additional testing of my own and found some interesting results. I didn't take perfect notes, but here's what I got:
With the Monoprice 4-port Wall Charger 2.1A 8856:
Cheap Monoprice cable: bad charging, fluctuating between -80A and 200A.
Cheap unknown cable: same as above.
Monoprice premium 3ft cable: 900-1200A.
Monoprice premium 6ft cable: 700-900A.
With the Monoprice 1A car charger 6765:
Bad charging with all cables tried.
With the Monoprice 2.1A car charger 8858:
Bad charging with all cables tried, with exception of Monoprice premium 3ft cable which had same low end, but occasionally bumped over 300A.
With 3.1 (split between two ports) charger purchased on Amazon (my standby for my Nexus 4:
Bad charging with all cables tried.
With Monoprice 2-port USB Car Charger 3.1A 10071:
Cheap Monoprice cable: Bad charging
Cheap unknown cable: Bad charging
Monoprice premium 3ft cable: 700-900A
So it looks like high-end Monoprice paired with high-end Monoprice pays off. Unfortunately there's a rather serious catch with model 10071: it KILLS GPS. At least it did on my Nexus 4, and other reviews reported it as well. I can't be certain yet about it on the 5, but the little experimenting I did in the parking lot showed some anomalies I didn't like. Which means I apparently get to choose between GPS killing my battery, or charging my battery killing my GPS.
Also tried Nexus 7 2012 charger with its own cable and got bad charging, too.
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Click to collapse
There's a pattern obviously, the 6ft to 3ft drop seems high but is ok I guess.
I've never seen such a picky device when it comes down to charging, usually it just works as expected ^^
Have you tried your cables on the carger it came with ? Or the cable it came with on your other cargers ?
Is there something with "AWG" written on your cables ?
@random_dgp: Well you basically have 2 choices: get a kernel with (force) fast charge support (don't know if there is one yet) or get a charger/cable combo which works.
If you're planning on rooting your N5 anyway I would go for the kernel way I guess, since the charger and the cable are fine most probably, they just aren't in the specs the N5 requires.
maisi said:
There's a pattern obviously, the 6ft to 3ft drop seems high but is ok I guess.
I've never seen such a picky device when it comes down to charging, usually it just works as expected ^^
Have you tried your cables on the carger it came with ? Or the cable it came with on your other cargers ?
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Click to collapse
The first-gen Nexus 7 was at least this bad. Actually its biggest problem was it refused to even ADMIT it was charging (even though it was) off of most devices. In fact everything I just listed it would claim wasn't even connected to it. A few hours later it was full, but it refused to recognize it. 4.2 fixed that, but it was still slow off of most devices. This at least admits it's being charged, but barely is.
And no, I haven't tried the stock charger yet. I guess I will, but it's not a high priority since it doesn't cover my issues.
TurboFool said:
One of the things I loved most about my Nexus 4 was just how quickly it charged. And unlike my SGSII before it, it could even gain a charge while being actively used for Waze. Really great.
With the 5 I'm back to where I was. And thanks to tools I picked up during the 4, I'm able to see why more easily. Seems on the exact same chargers I used my 4 on, I'm easily pulling 400+mA less than the 4 did from the same device and same cable.
I haven't had time to draw a correlation yet, but last night at home on a multi-out adapter from Monoprice I was able to pull over 1200mA which is more than I've ever seen ANY of my devices pull before. But today, on the same model at my office, but with a different cable, I'm pulling around 200mA. Same as what I was getting in my car, which would frequently dip into the negatives, and that was WITHOUT Waze running. Also of note, in ALL of these locations it's being listed as "USB plugged" instead of "AC plugged." I'd say that accounts for the difference there, but the 1200mA draw was listed the same way, so I doubt it.
So, has anyone else noticed this yet and found any correlations between devices, cables, etc., so we can figure this out? Using more power than it takes in will not be something I can survive with and will definitely make this phone a less-than-ideal upgrade over the 4 in the battery life department. But it's pretty clear it's not impossible to get a good charge.
(and yes, before anyone asks, all of my adapters have jacks with a minimum of 1A out, and each also has a 2.1A port. Surprisingly, unlike my 4 which tended to draw LESS power from the 2.1A port, the 5 appears to be unconcerned by the difference, pulling the same poor number from both)
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OOC what sort of dmm/ammeter are you using to measure this?
TurboFool said:
One of the things I loved most about my Nexus 4 was just how quickly it charged
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i dont know if you're making this up, or if i have a defective nexus 4 lol
before i optimized my N4 i was getting about 4-5 hours of screen time, but it took at least 3 full hours to charge. that charge time to usage time ratio was killing me.
i am having much much much better results with my N5. i have no reason to charge it through a USB port on the computer(are you using an USB 1.0 port or something?), but charging it with the charger that it came with, i get a full charge in about 2 hours.
my N5 will charge a tiny bit over 1% per minute(while on or off), until it gets to 80% and then it charges at about .5% per minute or something
if you're getting the same charge times on the wall charger then i think you might have a defective charger/device. testing this will also be a good way to find out if it's just a slow usb port too
TurboFool said:
The first-gen Nexus 7 was at least this bad. Actually its biggest problem was it refused to even ADMIT it was charging (even though it was) off of most devices. In fact everything I just listed it would claim wasn't even connected to it. A few hours later it was full, but it refused to recognize it. 4.2 fixed that, but it was still slow off of most devices. This at least admits it's being charged, but barely is.
And no, I haven't tried the stock charger yet. I guess I will, but it's not a high priority since it doesn't cover my issues.
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Oh that's bad , I didn't know that!
Would just be the "reference test" since the stock charger should meet all the specs (and works fine here with every cable).
@cutterjohn: "Currentwidget" can display those values.
Enddo said:
i am having much much much better results with my N5. i have no reason to charge it through a USB port on the computer(are you using an USB 1.0 port or something?), but charging it with the charger that it came with, i get a full charge in about 2 hours.
my N5 will charge a tiny bit over 1% per minute(while on or off), until it gets to 80% and then it charges at about .5% per minute or something
if you're getting the same charge times on the wall charger then i think you might have a defective charger/device. testing this will also be a good way to find out if it's just a slow usb port too
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Click to collapse
The problem he's having isn't about a computer USB port at all, the problem is that the N5 thinks it's plugged in a computer and limits the current to 500mA to meet the USB specs (and don't blow up some usb ports without a fuse somewhere) but in reality it's plugged in a wall charger.
His phone should be fine since it's working as expected on some carger/cable combos.
Btw. the N5 isn't pulling more current than the N4(both 1,2A), so it should charge almost exactly as fast/slow as the N4. It should even be a bit slower since the battery is slightly bigger I think.
cutterjohn said:
OOC what sort of dmm/ammeter are you using to measure this?
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Click to collapse
I'm simply using the app Battery Monitor Widget. Really handy tool that solved some problems for me on the 4 with some weird charging situations. While I'm sure it's not insanely precise, it reflects my draining or charging rate well enough to show me what's going on.
Enddo said:
before i optimized my N4 i was getting about 4-5 hours of screen time, but it took at least 3 full hours to charge. that charge time to usage time ratio was killing me.
i am having much much much better results with my N5. i have no reason to charge it through a USB port on the computer(are you using an USB 1.0 port or something?), but charging it with the charger that it came with, i get a full charge in about 2 hours.
my N5 will charge a tiny bit over 1% per minute(while on or off), until it gets to 80% and then it charges at about .5% per minute or something
if you're getting the same charge times on the wall charger then i think you might have a defective charger/device. testing this will also be a good way to find out if it's just a slow usb port too
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Click to collapse
I think you're missing the fact that I'm comparing it directly to how well these same devices charged the 4. So they're clearly not defective so much as the 5's requirements have changed completely. And USB 1.0 (I think you mean 1.1) isn't relevant here, as I'm not charging off a computer, I'm charging off a wall and/or car adapter. But sounds like we had very different experiences with the 4. I could charge my 4 off my Monoprice pocket battery in crazy fast time, and my phone was always full by the time I reached my destination in the car, even with Waze running (once I figured out I couldn't use the long cable I was using initially).
maisi said:
Oh that's bad , I didn't know that!
Would just be the "reference test" since the stock charger should meet all the specs (and works fine here with every cable).
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Click to collapse
Absolutely. A control of sorts. Might as well.
Btw. the N5 isn't pulling more current than the N4(both 1,2A), so it should charge almost exactly as fast/slow as the N4. It should even be a bit slower since the battery is slightly bigger I think.
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Exactly. That's why I was surprised. There's no way it SHOULD be this much slower. Yes, I can see percentage adjusting slightly for the larger battery, but that's why I'm going by mA input instead, and my 4 was getting WAY better in the car. Although I don't think it ever got the 1.2 I'm getting with the Monoprice wall combo, so THAT's impressive. Now if I can just get that in my car without the RF interference and I can call it a day.
maisi said:
@cutterjohn: "Currentwidget" can display those values.
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Well then your either have defective hardware or currentwidget just doesn't work. As I inferred hard to tell w/o proper tools.
[EDIT]
Oops, multiple responses and replied to incorrect one, but really if your recharge rate is that much lower v. n4 I'd say that your chargers or n5 are defective. It's going to take longer to charge the n5 obviously, and I have no idea what the max draw either can achieve as I've been strictly using inductive charging w/max 1A supply(as per Qi spec)... n5 takes longer to charge than n4, but thats to be expected by batt cap(and wear(decreased cap) of n4 batt)...
Subjectively, the n5 takes longer to charge, but not that much longer that I've noticed, again batt cap, etc. so...
Both USB/AC adapter chargers I know supply a max of 1.2A...
...(from last so) ask for a replacement n5, after they've been replacing them for a single dead pixel...
[/EDIT]
My n5 charging real fast fatter t than my n4!
Sent from my Nexus 5 using Tapatalk
cutterjohn said:
Well then your either have defective hardware or currentwidget just doesn't work. As I inferred hard to tell w/o proper tools.
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Neither I think, we don't need any mA values to see that something is wrong, android is telling us that it thinks that it's connected to a usb port while it isn't.
Of course if we would want to measure exact mA values we would need a different equipment, for cable comparisions in order to see a tendency, the values from the charge IC should be good enough.(IMO)
[EDIT]
Oops, multiple responses and replied to incorrect one, but really if your recharge rate is that much lower v. n4 I'd say that your chargers or n5 are defective. It's going to take longer to charge the n5 obviously, and I have no idea what the max draw either can achieve as I've been strictly using inductive charging w/max 1A supply(as per Qi spec)... n5 takes longer to charge than n4, but thats to be expected by batt cap(and wear(decreased cap) of n4 batt)...
Subjectively, the n5 takes longer to charge, but not that much longer that I've noticed, again batt cap, etc. so...
Both USB/AC adapter chargers I know supply a max of 1.2A...
...(from last so) ask for a replacement n5, after they've been replacing them for a single dead pixel...
[/EDIT]
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Just saw your edit ^^
Well it looks like the N5 has a very low tolerance for AC/USB detection, I'm sure that neither his chargers or Phone are defective, the chargers just aren't 100%in the spec which is obviously enough. I'm sure that the stock charger would be fine.
cutterjohn said:
Well then your either have defective hardware or currentwidget just doesn't work. As I inferred hard to tell w/o proper tools.
[EDIT]
Oops, multiple responses and replied to incorrect one, but really if your recharge rate is that much lower v. n4 I'd say that your chargers or n5 are defective. It's going to take longer to charge the n5 obviously, and I have no idea what the max draw either can achieve as I've been strictly using inductive charging w/max 1A supply(as per Qi spec)... n5 takes longer to charge than n4, but thats to be expected by batt cap(and wear(decreased cap) of n4 batt)...
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Clearly neither is the case from my testing. The N5 charges beautifully off of the right combination of chargers, and all of those chargers charged the N4 beautifully. Neither is defective, but the N5 apparently has a different tolerance requirement than the N4.
Really, as opposed to anything being defective, it sounds more like a design flaw in the N5. It's WAY too picky about its power sources.
Mine charged REALLY slow the first day and that night. It also drained really quickly during that same time. I am now on my third day and it has long battery life plus it charged about 20% in 30 minutes on a car charger. Seems quicker than my S3.
Hello, I'm a N8000 user. I'm facing a problem with my charging issue where my tab take a long time to charge and it takes 10 hours to get from 0-60 %. FYI, I'm using a custom rom CM 10.2. What is the main cause with the charging issue? Does it related with charging port, battery or charger itself? please help me. I'm stuck now.
[QUOTE8=syafix21;50085752]Hello, I'm a N8000 user. I'm facing a problem with my charging issue where my tab take a long time to charge and it takes 10 hours to get from 0-60 %. FYI, I'm using a custom rom CM 10.2. What is the main cause with the charging issue? Does it related with charging port, battery or charger itself? please help me. I'm stuck now.[/QUOTE]
Charger maybe, but most on here get a new factory cabel and that takes care of it.
syafix21 said:
Hello, I'm a N8000 user. I'm facing a problem with my charging issue where my tab take a long time to charge and it takes 10 hours to get from 0-60 %. FYI, I'm using a custom rom CM 10.2. What is the main cause with the charging issue? Does it related with charging port, battery or charger itself? please help me. I'm stuck now.
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Click to collapse
Many similar thread already here & also the solutions.
But let me answer anyway.
Charging problem occurs because of one or more things:
Broken Cable
Broken Charger
Incompatible Cable
Incompatible Charger
Broken Outlet
Broken Charging Port
Broken Battery
To properly charging a N80XX we need a charger & cable that can deliver 2.1A, 5V of electrical current & voltage.
The factory default/initial charger & cable designed to deliver these requirements.
Using custom/cheap cable or cable extension can cause charging problem as it wasn't designed to deliver the required current & voltage.
Most custom cables & chargers on the market designed only to deliver 500mA(0.5A) - 1A, 5V.
Broken cable/charger can also cause it to fail in delivering 2.1A, 5V to the device.
Try another original cable/charger combination to test if one of them or both are broken.
Also try another electrical wall outlet to see if the outlet is the culprit.
For Broken Charging Port, you can change it yourself by buying the spare part & replace the broken one, but it requires high technical skills.
One mistake can cause you to ditch your device.
It's safer if you send it to a qualified/authorized service center or if it's still under warranty you can send it back to samsung.
The last possibility is extremely rare.
Broken Battery symptoms are usually different than your problem symptoms.
If the battery is broken, usually the battery life is shorter than usual and may be won't charge at all or charging time is very short.
But if this is your problem, you can't sent it back to samsung - unless the battery is factory damaged -, as you need to change the internal battery.
Try to find out which one is your real problem & fix it
REMINDER:
2.1A is producing heat so much that hurt your skin if you touch the metal part of the cable heads directly right after a long period of charging.
The heat it produce is much more intense than if you are using 500mA or 1A charger.
Poorly designed custom cable/charger can be melted by the heat & may cause explosion!!
...and.....ALWAYS SEARCH BEFORE ASKING!!
I hope this will help
I'd like to add that I was facing similar problem.
In my case, the problem was a stock charger cable.
It was not "broken" (in the meaning of totally cracked or cut cable) but it seemed that it isn't providing a stable voltage. In result, I was able to load the battery only when not using the device (plus the process was as slow as hell), coz when using it, the consumed power was higher than provided by the charger.
Meanwhile, before the problem occured, I was testing other solutions to be able to make charging cord longer than provided stock, which is only 1m. Those tests included using of the additional 2m USB-USB expansion cable which I was plugging to the plastic charger element from the one side and to the regular charging cable at the second side. Such a combination resulted in similiar results as above - then, it became obvious for me that the tablet consumes or wants to consume so high power that low-quality USB cable can't handle, and - especially if it is 2m long - it's degrading onto his way to the tablet.
Then, I am not sure if n8000, by demanding so much power, is not degrading the cable (even stock one) itself. I must say, that after that, I was using another charger cables (n8000 dedicated, one 2m second one 1.5m, both not original) which started to work significantly worse in even shorter time such as two weeks after first use. I am not a electrician or hardware specialist, I dunno if it is possible to degenerate the usb cable with the voltage such as one needed for charging the tablet, but during my over 10 years of passion within mobile devices, I have killed no more than 2 chargers IN TOTAL. N8000 killed 3 charging cables within 8 months.
For some time, I use another combination - I use a 1,5 long A/C extension cord, with a handy "8" plug at the second end. This fits into the charger "central box" after you dissolve it into two parts. Now, the voltage will not degenerate onto this 1.5m distance, as the cable of that type was designed particularly for 230V transfers, but it will still be perfectly mobile. At the second side of the box, I do not plug back the 1m stock cable (or longer not-official ones), but a cable that the Samsung provided along with an external battery, which is possible to buy here and there... It is about... 20 cm long The purpose of this was to avoid the energy lossess that occured when using longer cables and preserve the maximum possible charging rate. Since then (and about 5 months has passed) I have no further problems with charging, and the battery life seems to be much more better than I supposed it to be after over a year of really extensive usage (the only issue of above solution is that the plastic box in the middle is making really really hot, but it is not a critical problem i suppose, as since 5 months it HASN'T melted, exploded or something )
hay....i have the same problem but this tablet doesnt get charging
i think its not about charger because it gives 5v and 2A after the usb flat but in battery connector i got no current and there is just less than 1V voltage
Hello there,
I decided to open this thread as I've now had a bunch of issues with the stock charger that came with the device and it would be interesting to know if there's anyone else who's having this type of issues.
The exact issues that I've been having with the stock charger seems to be that the charger doesn't output enough of a amperage for the tablet to hold charge while in use, and even when it's not in use it takes almost 7-8 hours to charge from 50% up to 100%. It's as slow as if I would charge it from a regular USB port, if not, even slower and I don't really know why exactly this happens as it says that it's charging from AC adapter in settings.
To comfirm my issue was not related to the tablet itself, I used another charger that's rated at similar specs to the stock charger (2.1A) but with the same Micro-Usb cable that came with the tab. With that charger, it charged up from 50% extremely fast (around 1,5 hour) and I could even use the tablet while charging without any battery drops. So that comfirms two things, it's not related to the tablet or data cable but to the actual charger itself.
Anyone else that's been having this type of issues with the stock charger?
My tab needs max. about 3 hours to charge full and imo it's ok. Tried charging during Half Life2 gaming and can confirm that there's not a lot of charging going on, maybe 1or 2% in an hour. But that's ok for me, as long as it doesn't start to get emty while charging during gaming.
The charger is defective or don't bring enough power to the unit. I also get negative charge while playing high end games an also increase when i am, on Optimized mode. Many others has reported this situation on GeForce forums but nVidia is quiet about it.
CM17X said:
The charger is defective or don't bring enough power to the unit. I also get negative charge while playing high end games an also increase when i am, on Optimized mode. Many others has reported this situation on GeForce forums but nVidia is quiet about it.
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I get negative charge even when doing basic tasks like listen to music or watch a video with the stock charger, so I guess my charger is faulty. I've already reported the issue to Amazon and they gave me a 50GBP partial refund (80 USD!) because of the faulty charger without having to ship anything back.
I just find it odd that theres many people that have the issue and nvidia doesn't seem to do anything about it either!
GethPrime said:
I get negative charge even when doing basic tasks like listen to music or watch a video with the stock charger, so I guess my charger is faulty. I've already reported the issue to Amazon and they gave me a 50GBP partial refund (80 USD!) because of the faulty charger without having to ship anything back.
I just find it odd that theres many people that have the issue and nvidia doesn't seem to do anything about it either!
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If i were you, i'll check with another charger doing normal stuff, if you still get negative charger maybe it could be your battery itself.
GethPrime said:
I get negative charge even when doing basic tasks like listen to music or watch a video with the stock charger, so I guess my charger is faulty. I've already reported the issue to Amazon and they gave me a 50GBP partial refund (80 USD!) because of the faulty charger without having to ship anything back.
I just find it odd that theres many people that have the issue and nvidia doesn't seem to do anything about it either!
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Click to collapse
My guess is that a faulty cable or the charger itself is causing D+ and D- to not be shorted together by the charger, resulting in the tablet thinking it's charging from a USB port instead of a dedicated charger.
Does device status report charging state as Charging (USB) instead of Charging (AC)?
I admit I never even unwrapped the stock charger, I've got one of those nice Anker 40W 5-port chargers along with a bunch of 24/28AWG MicroUSB cables from Monoprice.
Entropy512 said:
My guess is that a faulty cable or the charger itself is causing D+ and D- to not be shorted together by the charger, resulting in the tablet thinking it's charging from a USB port instead of a dedicated charger.
Does device status report charging state as Charging (USB) instead of Charging (AC)?
I admit I never even unwrapped the stock charger, I've got one of those nice Anker 40W 5-port chargers along with a bunch of 24/28AWG MicroUSB cables from Monoprice.
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Click to collapse
The charger appears as AC in settings, so it should be charging faster than it does.
I'm using a charger similar to what you use right now, a Dodocool 4 port charger that works great! However, I'm using the stock cable.
First make sure you are using stock charger and cable.
If you see discharge during non intensive activities you may have a defective charger. Nvidia has rma'd the charger by itself for people.
I have the same issue but my charging time is a bit better 3-4 hours. But what is really annoying that it makes a lot of electrical noise. I have a lot of things that I charge, but I have never heard this so load earlier. Its coming from the adapter, I can cleary hear from 3m. Anybody has similar issue? I try to record the sound, and send to nvidia. Maybe they will react.
Sent from my LG-D802 using XDA Premium 4 mobile app
Entropy512 said:
I admit I never even unwrapped the stock charger, I've got one of those nice Anker 40W 5-port chargers along with a bunch of 24/28AWG MicroUSB cables from Monoprice.
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Click to collapse
I can confirm that this combo works a treat for my NST. I use it to simultaneously charge my G3, NST, N7 and some small LiPos. Fast charge.
Sorry to dig up this thread but I've had the same issue and i was WTF-ing like crazy until i switch the USB cable to a charging cable i got from a power bank... The charge time dropped from 6-7 hours to 2-3 hours. I'm not sure why, perhaps my cable is faulty or perhaps it was meant to charge like this, or perhaps it is supposed to be used to connect a controller only (both ends seem to have a controller icon on them)?
MrHollow said:
Sorry to dig up this thread but I've had the same issue and i was WTF-ing like crazy until i switch the USB cable to a charging cable i got from a power bank... The charge time dropped from 6-7 hours to 2-3 hours. I'm not sure why, perhaps my cable is faulty or perhaps it was meant to charge like this, or perhaps it is supposed to be used to connect a controller only (both ends seem to have a controller icon on them)?
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It's not due to the MicroUSB cable but due to a wallwart that's messing up the amperage I believe, as I've used the MicroUSB cable with other wallwarts and it charges normally then
GethPrime said:
It's not due to the MicroUSB cable but due to a wallwart that's messing up the amperage I believe, as I've used the MicroUSB cable with other wallwarts and it charges normally then
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You are correct. I charged the tablet at home 2 times this weekend and it's definitely an issue with the charger as it sometimes charges properly and sometimes it does not.
MrHollow said:
You are correct. I charged the tablet at home 2 times this weekend and it's definitely an issue with the charger as it sometimes charges properly and sometimes it does not.
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Get in touch with the retailer you got it from and ask for them to provide you with a proper charger, as a compensation
GethPrime said:
Get in touch with the retailer you got it from and ask for them to provide you with a proper charger, as a compensation
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A bit hard to do since i got it from amazon.com when i was in the US (back in EU now) and there's no point in returning the tablet just for a semi faulty charger.
MrHollow said:
A bit hard to do since i got it from amazon.com when i was in the US (back in EU now) and there's no point in returning the tablet just for a semi faulty charger.
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Contact amazon and tell them exactly about the issue, they'll compensate you for it probably. I got 50£ back from Amazon.co.uk for the broken charger, which is quite a bit of money.
GethPrime said:
Contact amazon and tell them exactly about the issue, they'll compensate you for it probably. I got 50£ back from Amazon.co.uk for the broken charger, which is quite a bit of money.
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Thanks for the tip, i'll give that a try
Well, same thing here. Just noticed it while using Skype. Battery dropped from 100% to 95% pretty quickly while charging.
I'm going to ask Amazon for another charger or compensation.
I have a 2.4A charger and still battery no good.
I lose around 2% per min of battery charge while idling with battery saving features on (2 cores shut off, CPU frequency set at 50% and Framerate locked at 30FPS) when ingame the battery drops 2-3 times faster. takes 2 hours to charge from 97% to 100% and 2 mins to lose that charge. I think I bought a Tablet that has a faulty battery as this is not acceptable. My tablet is unusable as the battery takes a couple of mins to lose 3% of charge and a couple of hours to regain the 3% charge only to lose that charge (and then some) when I try to use the tablet.