Database Users

[Q] Battery charged but showed 0% ?

My gf said her N7 showed a 0% charge even though 2 hours earlier she had a 60% charge. She then plugged it in and restarted, then it showed a 60% charge again.
Any ideas what may be wrong?

androidmonkey said:
My gf said her N7 showed a 0% charge even though 2 hours earlier she had a 60% charge. She then plugged it in and restarted, then it showed a 60% charge again.
Any ideas what may be wrong?
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Click to collapse
is it rooted? maybe wiping batter stats will fix it.

Its not rooted.

Fufu_the_Great said:
is it rooted? maybe wiping batter stats will fix it.
Click to expand...
Click to collapse
Not likely. Battery stats has absolutely nothing to do with reported charge level. Wiping it will have the same effect as clearing his market search history... None at all.
Sent from my Nexus 7 using Tapatalk 2

Are you using the charger that came with the Nexus 7? 'Cause the same thing happened to me last month. I used a charger I got from ebay, plugged it in, charged all day, came back, unplugged it, turned on & said it was in the red!

Same thing happened to me shortly after I had the N7.... and that was with using the supplied mains charger and cable.
All I did was leave it alone for a further hour and when I then went back to check the screen it had jumped all of 13%.
I was tempted to return the N7 but as it was night and I couldn't return it I left it on charge overnight...... The following morning it was 100% charged.
Since then it's been charged dozen's of times and not once been a problem since (says he touching wood).

My problem is that it wont show that its charging even tho it is. Tried all chargers i have and even the stock one is same. Was going to return it but all the horror stories I've heard i decided not going to bother. Chances are i get a worse unit back. Personally it looks like the connector is not going all the way in. I am going to shave some of the plastic off and see if that helps. Anyway I think Google needs better quality control at Asus and even at Samsung, i remember how my Gnex was packaged.
Sent from my SAMSUNG-SGH-I747 using xda premium

im running aokp JB build 2 and everytime i turn it on, the little battery icon says for example "54%" and on the lock screen it says "100%"
kinda strange. I was about to ask if it was rooted also, but someone did that before me, so im lost for words

Slow charging

For some reason my nexus is charging very slowly today. It has gone from 24% to 52% in a span of 3 hours, usually is fully charged by that time. Stock 4.2.1. Any ideas why?
Στάλθηκε από το Nexus 7 μου χρησιμοποιώντας Tapatalk 2

Did you use the charger that came with your N7?
Sent from my Nexus 7 using xda app-developers app

Experienced some horrible charging last night, went from 5% to 24% in a span of 5 hours charging with the stock USB.

Απ: Slow charging
Yeap im using the nexus charger.
Στάλθηκε από το Nexus 7 μου χρησιμοποιώντας Tapatalk 2

I have experience extremely slow charging with anything other than the stock charger with the stock cable. Not sure what that's about, but I hope I don't lose either of them...

The reason why other (phone) chargers won't work/ charge the device slower is because the Nexus charger (the big block) outputs 2A, many phone chargers only give 1A or 0,5A. (You can charge you phones with the N7 charger twice as fast, not recommended though.)
Sent from my Nexus 7 using xda app-developers app

I read somewhere that Jean Baptiste Queru commented on this on Google+, however I cant find this post.
Have a read here http://www.gottabemobile.com/2012/11/19/android-4-2-jelly-bean-bugs-plaguing-nexus-users/
Down near the end of the comments section, old timer Tony has posted an interesting theory. Whether its possible or not I don't know but its an interesting theory in so far as this issue doesn't affect everybody.

Just wondering what standard the cable and the charger is.
What can you use that is not the stock charger, And get the dame charging results.
DEVICES:
NEXUS 7 32GB STOCK
(NO ROOT)
T-MOBIL LG G2X (LG-P999)
STOCK (ROOTED)
Sent from my LG-P999 using xda premium

4.2.1 30 minutes charging the Nexus 7 and 4% charge increase
Sent from my Nexus 7 using xda premium

Mine too... slow as hell on 4.2.1

I searched for slow charging today, as I have found some nights that my Nexus 7, plugged in to the original Nexus 7 charger and using the Nexus 7 usb lead, and displaying Charging (AC), is not full by morning.
Other nights, it is full.
If it has not gone to 100%, then sometimes when I unplug the micro usb and plug it back in again, it charges up the final bit quite quickly.
Is there any way to measure from within the stock Nexus what charging rate it is getting?

Mine charges really quick. Turn off the WiFi while on charge. That should do the trick..(did for me)
Sent from my Nexus 7 using xda premium

Mine takes 5-6 hours to fully charge. I found, the charge increased when the device was off (i.e. less draw, more power for charging).

Download 'CPU monitor' from the play store and see if there is an app hogging your processor. This happened to me the other day. My n7 usually charges from empty in 3 hours, but it was charging much slower.
I felt my nexus was just getting slightly warm on the back, so fired up CPU monitor, and found an app that was keeping the CPU running. So I killed the process and everything went back to normal.
Sent from my Nexus 7 using Tapatalk 2

There's a thread on a battery pack over in the accessories subforum. It was a great deal so I got one and have been posting and following it. Related to this thread, why?
I found that the uber smart logic that was added as part of the 4.2 Android release can use a charger designed to the Apple power standard instead of the USB power standard. This means the Nexus tries to sense whether the data lines are connected for data or not. This in turn means that the Nexus can get confused by noise on the data lines and decide to slow charge at the 500 mah max rate because it thinks there's a computer on the other end of the cord instead of a charger. Simply disconnecting and reconnecting or changing cables should make the problem go away.
Sent from my Nexus 7 using Tapatalk 2

Install current widget which tells you the charge.
Sent via TCP/IP

give this a try?
My wife's N7 (I keep it within a week or two of CM nightlies) wouldn't charge at all - It would work, most of the time, if plugged in, but batt would never rise above zero, even if android was not booted up, screen was off, overnight, airplane mode, anything. Flashed different builds, no change.
Sometimes when turning it on, you couldn't get anything but the fuzz, like a bad GPU. Tried ADB, tried power+down trick (toggle to power off) but the bootloader screen never responded to any input.
What fixed it for me was removing the back case, unplugging the battery, and plugging it back in. Suddenly the battery noticed it had 46% capacity. Few days since, so far so good. Not hard to take apart n7's, might be worth a shot if you're having weird batt issues.
The batt cabled on this N7 felt looser than the plug on other n7's I've taken apart. If this issue reoccurs I'm going to stock some tape over the connector.

I tried current widget but it shows "no data" for current.
Battery diviner has graphs which show rate of charging. Last night it recharged from 82 to 100 in 3 hours. This looks interesting.
Sent from my Nexus 7 using Tapatalk HD

Charging a 4325mAh battery isn´t exactly 5 minutes and its done. mine takes up to 3 to 4 hours sometimes..

Streykatorato said:
Charging a 4325mAh battery isn´t exactly 5 minutes and its done. mine takes up to 3 to 4 hours sometimes..
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Well, my Nexus 7 takes up to 12h to charge completly (currently 6%/h). Using the std. AC, but not the original cable... I have doubts that it should take that long, even if I do not use the original cable.
Anyone a clue or similar experiences?

N4 massive battery issues

Or more like charging issues?
I've got this phone in December and I'm pretty satisfied with it. The only thing that kinda annoys me is the fact that my phone often won't charge properly and I'm not sure if it's because of the charger (the one that comes with the Nexus) or the battery.
When I charge it, it says that it's charging. Just like it should be. The problem is though, that it's not really charging. A few seconds later it says that it's discharging, not even a second later it's charging again, then discharging and it goes like that all the time. I'm almost sure that this harms my battery a lot. When I let it charge over night, most of the time the battery level is under 100% (50-60% are more likely) and that is kinda frustrating when going to work.
So I want to know: does anybody have the same issue or something similar? Or do I just have a faulty device/charger? This issue has been plaguing me for around a month now.
Sent from my Nexus 4 using xda app-developers app

xExabyte said:
Or more like charging issues?
I've got this phone in December and I'm pretty satisfied with it. The only thing that kinda annoys me is the fact that my phone often won't charge properly and I'm not sure if it's because of the charger (the one that comes with the Nexus) or the battery.
When I charge it, it says that it's charging. Just like it should be. The problem is though, that it's not really charging. A few seconds later it says that it's discharging, not even a second later it's charging again, then discharging and it goes like that all the time. I'm almost sure that this harms my battery a lot. When I let it charge over night, most of the time the battery level is under 100% (50-60% are more likely) and that is kinda frustrating when going to work.
So I want to know: does anybody have the same issue or something similar? Or do I just have a faulty device/charger? This issue has been plaguing me for around a month now.
Sent from my Nexus 4 using xda app-developers app
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Have you tried it with another charger? I always use a universal charger and that works fine. If that doesn`t help it is probably a hardware issue and you`ll need to get it fixed.

AW: N4 massive battery issues
Unfortunately I don't have any charger with an output of 1.2A. All of them are under 1.2A and most are broken anyway (also chargers from my last phone, LG Optimus 2X). Seems like I'm just not that lucky when it comes to chargers.. I'll try to find one though. Thanks for the reply.
Sent from my Nexus 4 using xda app-developers app

Just to test it, use your computer usb. It isn't full power but it is enough to see if there is an issue. Maybe a new cable?

AW: N4 massive battery issues
Not sure if this is related to my computer now but when I plug it in it says charging and as soon as the MTP notification pops up it doesn't charge anymore.
Should I try to fully discharge my battery and then recharge it?
Sent from my Nexus 4 using xda app-developers app

AW: N4 massive battery issues
Okay so I somehow fixed it.. most likely temporarily but it seems like the issue is the cable. I pretty much "straightened" the cable with my fingers (was applying pressure to the cable and then went slowly downwards) and that apparently worked o_o..
Now it's been charging for 15 minutes without disconnecting once. I hope it'll remain like that..
Sent from my Nexus 4 using xda app-developers app

[Q] Nexus 7 will not charge

my nexus7 will not charge until it has completely drained....
I am aware of the current battery problems, but mine is a bit different....
Even after going to bootloader and choosing power off my nexus will sit on charge (wall) overnight and be dead in the morning, even though it was at 30% when plugged in....
The only way to charge it seems to be off my laptop. but even then it takes over a full day to charge.
If i hook up to laptop while runing it basically only slows down the drain but still doesn't charge up....
this is very frustrating, and i'm at my ropes end
would dowgrading to an older rom take care of this issue?

whasty said:
my nexus7 will not charge until it has completely drained....
I am aware of the current battery problems, but mine is a bit different....
Even after going to bootloader and choosing power off my nexus will sit on charge (wall) overnight and be dead in the morning, even though it was at 30% when plugged in....
The only way to charge it seems to be off my laptop. but even then it takes over a full day to charge.
If i hook up to laptop while runing it basically only slows down the drain but still doesn't charge up....
this is very frustrating, and i'm at my ropes end
would dowgrading to an older rom take care of this issue?
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Click to collapse
No solution, I'm afraid, I'm chiming in to say that I have also been having problems since the same time. For two days, I have been trying different combos of chargers, cables, and outlets, to see if other equipment is the problem. But all of it works fine with my Nexus 4. Mostly, I am experiencing that the unit says "charging" but the battery level is going down instead of up. I managed to get a full charge overnight by using an external battery that I got just for this type of emergency backup. After use, it is back down. This morning, third cable I tried finally seems to be working, for now. In 40 minutes it went from 63% to 65%. I am somewhat relieved but this situation is not normal.
I'm going to start reading through the forum to try some suggestions. I wasn't paying attention to updates. Has this problem been triggered by a recent update?
I understand some suggestions call for letting the battery discharge entirely. It seems that won't be hard to do. I can leave it plugged in and, as happened with most of the cables I tried, the battery level will go down to zero pretty fast. I'm really annoyed, but very happy right now that I splurged on an external battery.

Have you tried a new charging block... That would more that likely be your culprit.
Sent from my SPH-D710 using xda premium

I have used 4 blocks
Unless the tablet is killing the charger it is certainly the tab
Sent from my Nexus 7 using Tapatalk HD

whasty said:
I have used 4 blocks
Unless the tablet is killing the charger it is certainly the tab
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
Check your port for bent pins.
Sent from my Nexus 7 using xda premium

I used three different chargers plus the external battery. Two of the chargers have two inputs (i.e., for Apple and non-Apple products). I have five different charging cords, longest is 6 ft and the others much shorter (two are from Monoprice), and one retractable I usually use in the car. I tried every combination I could think of between chargers, cables, input ports, and several different electrical outlets at two locations.
All the various combos functioned fine with my Nexus 4, the other device I have with me. None of them worked with the Nexus 7. All showed as "charging", but they weren't. In some cases, the numbers were going down quote rapidly. Goes without saying, when you're charging, it shouldn't go from 64% to 59%.
The thing that finally worked - with no hiccups - was the external battery. Since everything worked on the Nexus 4, it's quite apparent the problem is the Nexus 7.
Having said that, by this morning, things inexplicably changed for the better. With the device at around 70%, I connected one of the chargers and it functioned normally. Battery filled up within the normal timeframe. I was using it intermittently while charging, as I often do.
I'm glad it's working and very glad I have the external battery that can fill up both the Nexus 4 and Nexus 7 in a pinch. But I still think there's something wrong with the Nexus 7, and I'm not knowledgeable enough to dare try some of the more technical suggestions. Just the term "shorting out the pins" is enough to warn me that I'm not expert enugh to try anything like that. For now it works, I hope it lasts like that until perhaps I can understand the issues a little better.

I'm having the exact same issue as you guys and it has me stumped. On some days it'll work, others it wouldn't. At first I thought I could fix it by rebooting but last night mine just drained all the way down overnight while charging from around 50% and this morning I wasn't having much luck getting it charged using the 2 stock Nexus 7 wall chargers that I have. I'll try using an external that I got recently and hopefully that'll solve the issue for now at least.
Edit: Some people have had luck reversing the polarity on their charging block. I'll give that a go and report back whether it worked for me or not.
Edit/Update: Yup, flipped my brick around so that the big end sticks off the left side and it's at 32% now from 0% after 2.5 hours. You guys might have some luck with this too.

Nexus 7 fails to charge
We have two Nexus 7 in the house, one 11 months the other 6 months old.* The older one stopped charging just before our holiday last month so we took the other. It stopped charging while we were away.* Fortunately my wife had here Samsung Ace [mains] phone charger with her. This worked every time.*
Once home I checked the two Nexus 7 mains units and 2 Nexus 7 usb cables. No combination would charge either Nexus 7.* The Samsung mains charger would always charge both Nexus 7.
Solution:* Suspicious, I ordered an Asus Nexus 7 cradle while we were away. Any combination of Nexus 7 mains unit and usb cable charges both Nexus 7s on the cradle.
Conclusion: The USB socket on the Nexus 7 cannot take repeated insertion and removal of the cable.
Hope this may help somebody.

Yea I had the EXACT same story as you. I had for got to take my nexus 7 charger on holiday but I had my Samsung galaxy ace (s5830i) charger so I used that. when I came back and pluged In my charger It said that It wasn't charging so I used my brothers nexus 7 charger but still no good. It said that my brothers nexus 7 was charging but not mine and than I figured out what I had damaged... My nexus 7 charging port. I had proved this by comparing the the 2 charges and they where very different... Luckly It was still under warranty so I took it to (I cant tell you that). I looked all innocent and pretended I was new to this stuff and they then tried to charge it but no use so they replaced it with a new one but now I know not to put different chargers in my new nexus 7 and that goes to people out there as well
Sent from my Nexus 7 using xda app-developers app

Charging Issues; Need advice

Hello,
First off I want to preface this by saying I have my bootloader unlocked, rooted, running a 6.0.1 ROM.
This past weekend I noticed that my phone wasn't charging on a generic 4 port USB charger that I have. Made sure it had power, tried it on my tablet I had laying around, and eventually got it to charge using a different cable. No problem, stuff like that happens. Noticed it was "charging slowly" Hmm..wonder if the USB charger is going back. Tried it other places, but always getting EXTREMELY slow charges. Unfortunately I had my OEM charger at work at my desk so I couldn't try that but I have a QuickCharge 2.0 car charger that I tried. I plugged it in there and I was actually LOSING charge at what seems like a faster rate than just a normal drain. WTF!?
Got to my destination (going to my buddy's house) and tried a few of his chargers; same thing, "charging slowly". Made it through the weekend, got home and the problem is still going on with all my chargers.
So today, I get to work to try my OEM quickcharge and it drains my battery as well! Oh boy. This is bad.
Anyone else experience this? Since I've unlocked bootloader and no extended warranty AND the fact that Moto Support is god awful anyway, I'm screwed when it comes to professional help. Anyone have luck opening up this beast and fixing anything? Any help or guidance would be very much appreciated.

My phone isn't charging very well either. I went out to do some errands and phone was on 84% saying it'll be charged in 35 minutes I came home three hours later it's still on 84% with 35 minutes to go and burning up to touch. This is already my fourth Moto X in the week.

xBkKx said:
My phone isn't charging very well either. I went out to do some errands and phone was on 84% saying it'll be charged in 35 minutes I came home three hours later it's still on 84% with 35 minutes to go and burning up to touch. This is already my fourth Moto X in the week.
Click to expand...
Click to collapse
Fourth with issues? Hope it's not related to the same charger.
Sent from my XT1575 using Tapatalk

dottat said:
Fourth with issues? Hope it's not related to the same charger.
Sent from my XT1575 using Tapatalk
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Click to collapse
Not the same charger but all four different chargers the phone comes with. I ordered it on Amazon with next day arrival and the first two phones had dead pixels third one was reading 138 degrees with ampere while charging and would stop and fourth (current) refuses to charge past 84% unless I have the phone off I noticed. I unlocked the bootloader on this current one though so I don't think I'll be able to exchange it now

sreister said:
Hello,
First off I want to preface this by saying I have my bootloader unlocked, rooted, running a 6.0.1 ROM.
This past weekend I noticed that my phone wasn't charging on a generic 4 port USB charger that I have. Made sure it had power, tried it on my tablet I had laying around, and eventually got it to charge using a different cable. No problem, stuff like that happens. Noticed it was "charging slowly" Hmm..wonder if the USB charger is going back. Tried it other places, but always getting EXTREMELY slow charges. Unfortunately I had my OEM charger at work at my desk so I couldn't try that but I have a QuickCharge 2.0 car charger that I tried. I plugged it in there and I was actually LOSING charge at what seems like a faster rate than just a normal drain. WTF!?
Got to my destination (going to my buddy's house) and tried a few of his chargers; same thing, "charging slowly". Made it through the weekend, got home and the problem is still going on with all my chargers.
So today, I get to work to try my OEM quickcharge and it drains my battery as well! Oh boy. This is bad.
Anyone else experience this? Since I've unlocked bootloader and no extended warranty AND the fact that Moto Support is god awful anyway, I'm screwed when it comes to professional help. Anyone have luck opening up this beast and fixing anything? Any help or guidance would be very much appreciated.
Click to expand...
Click to collapse
Question to OP: DId you ever find a resolution? I have recently noticed that my XT1575 (currently restored to stock 6.0 but still unlocked) actually LOSES charge while "charging" (as reported in Battery setting) in my Car (12vDC) and on my motorcycle (12vDC). Granted, I am running GMaps and streaming music running, among other apps... In fact, I just saw the charge drop from 74% to 68% in about 15 mins while driving this morning... On the other hand, when plugged into AC Turbo charger, I can run all those apps and then some, and charging, the battery charge goes up 1-2% per minute... Wondering if anyone else has seen similar issue when charging via DC current?

ech1253 said:
Question to OP: DId you ever find a resolution? I have recently noticed that my XT1575 (currently restored to stock 6.0 but still unlocked) actually LOSES charge while "charging" (as reported in Battery setting) in my Car (12vDC) and on my motorcycle (12vDC). Granted, I am running GMaps and streaming music running, among other apps... In fact, I just saw the charge drop from 74% to 68% in about 15 mins while driving this morning... On the other hand, when plugged into AC Turbo charger, I can run all those apps and then some, and charging, the battery charge goes up 1-2% per minute... Wondering if anyone else has seen similar issue when charging via DC current?
Click to expand...
Click to collapse
now that I think about it, its DC going into the phone regardless of the source, so the type current is not a factor... so assuming I don't have bad cables, what could be causing the difference?
Sent from my XT1575 using XDA-Developers mobile app
---------- Post added at 08:48 PM ---------- Previous post was at 08:14 PM ----------
Upon further research I just discovered and ordered a Qualcomm Quick Charge 2.0 capable car adapter... I'll bet the "standard" usb power the phone can draw from a cheap car adapter isn't sufficient to effectively charge on top of streaming, GPS mapping, Bluetooth stereo and screen on... Lets,see what the new 2.0 QC adapter can do next week....
Sent from my XT1575 using XDA-Developers mobile app

I've noticed issues with the charging port. I have two brand new 25w turbo chargers and neither of them connect/charge my phone. I got an OEM USB cable and connected it to my old Droid Turbo charger and that is the only charger that works for me. Bummer. Was considering sending back the phone to moto, but I'm unlocked and have a feeling they would not repair/research it...
Sent from my XT1575 using XDA-Developers mobile app

You can download an app called "Ampere" it will actually show you the charge and discharge rate that the phone is doing. Might help out in determining what is wrong.

For those experiencing issues with the device not charging to 100% when it is extremely hot, this is normal behavior. This is from Motorola...
Some facts on battery temperature
* Devices need their space; There are no on-board fans, cooling relies solely on the device being able to dissipate heat through the air. To help cooling, ensure the device is not in a pocket, purse, carrying case, or direct sunlight.
* Normal temperature is (97f) ~36c
* A user will begin to sense a “warm” device at 106f (~41c) and it will seem hot at 109f (~43c)
* Cool Down Mode kicks in at 152f (67c)
* Batteries with temps => 113f to 140f (45c to 60c) will not charge to 100% capacity
* Battery temps >140f (60c)will not charge at all
Click to expand...
Click to collapse