Database Users

Battery DISCHARGING while Charging!!

Strange Issue!!
when my phone is low on battery and i try to charge it (with the original ac charger or the usb); sometimes (almost half the times) the phone instead of charging .... DISCHARGES!!
i have tried all possible fixes. tried the battery calibration apps also. but it gets ok for a day and then back.
i can only charge my phone while its switched off!
Details:
1. on stock TW4
2. 3 pages on home
3. total widgets= 6 ( advanced task killer; digital clock; 2- circle launcher; quick battery; weather)
4. i kill all tasks always before charging!
WHAT AM I DOING WRONG? BTW I HAVE TRIED TO REMOVE ALL WIDGETS AND CHARGE ALSO! NO LUCK!
HELP!!

It sound like you might have a faulty charger, have you tried charging from your notebook, it`s a bit slower at 400mah compared to 650mah for the mains charger.

Tinderbox (UK) said:
It sound like you might have a faulty charger, have you tried charging from your notebook, it`s a bit slower at 400mah compared to 650mah for the mains charger.
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Yes, as a matter of fact, right now i am trying to charge through USB with the same drainage.
Switch the phone off for a while!... let the sucker charge.
And the problem is not always!

this is normal, already been posted. the charger is limited to 650 mA on wall power, and 450 mA on USB power. so it is easily possible to pull more power than is going into the device, say if you are gaming or pushing the device hard with navigation or similar.
next time this happens, turn off the screen for 10 minutes as a test, then come back, and see if the charge increased at all. it likely will increase.

RogerPodacter said:
this is normal, already been posted. the charger is limited to 650 mA on wall power, and 450 mA on USB power. so it is easily possible to pull more power than is going into the device, say if you are gaming or pushing the device hard with navigation or similar.
next time this happens, turn off the screen for 10 minutes as a test, then come back, and see if the charge increased at all. it likely will increase.
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Click to collapse
yup! i was having the same problem and did this Roger says and its exactly that... GL

if your phone is hot too it will not charge as well.

RogerPodacter said:
this is normal, already been posted. the charger is limited to 650 mA on wall power, and 450 mA on USB power. so it is easily possible to pull more power than is going into the device, say if you are gaming or pushing the device hard with navigation or similar.
next time this happens, turn off the screen for 10 minutes as a test, then come back, and see if the charge increased at all. it likely will increase.
Click to expand...
Click to collapse
My problem is when I'm not using the phone at all and the screen is off. Tried charging through both wall and usb charger.
The only way right now I can charge my phone is while switched off.
I always kill all apps before charging also... Still!
And if its charging while on, screen off, it gets hot also.
Sent from my GT-I9100 using XDA Premium App

vinaymieux said:
My problem is when I'm not using the phone at all and the screen is off. Tried charging through both wall and usb charger.
The only way right now I can charge my phone is while switched off.
I always kill all apps before charging also... Still!
And if its charging while on, screen off, it gets hot also.
Edit: i also have read in many places that using task killer actually cause more harm than good bcoz it disturbs the proper sequece of how android shuts down an app or process..and cleans up the memory..this will result some of the apps or process to stay awake or come awake again when it sould be sleeping...
Sent from my GT-I9100 using XDA Premium App
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Click to collapse
I once had this problem..after charging for 6 hours battery was only at 60% and phone was hot..found out that although the screen was off..the phone was wide awake all the time. For me the issue was the wifi manager was somehow awake and consuming power..hence phone was hot and battery drain while charging. Check your battery usage graph and see if your phone is awake when it should not be..and pin down the rouge app or process..
Hope this helps..
Sent from my GT-I9100 using Tapatalk

I've got a similar problem, while charging in a car using the SGS2 for navigation. BTW, what is the maximum Amper I can charge the phone without damaging it?

I really dont understand why Samsung keeps supplying this crappy charger. Desire Z and iPhone 4 both came with 1000mAh ones. Super fast charge on both! Come on sammy... This isnt a 900mAh feature phone. This is a big battery hogger dual core with a large battery inside!
Sent from my GT-I9100 using XDA App

SkulleD_PT said:
I really dont understand why Samsung keeps supplying this crappy charger. Desire Z and iPhone 4 both came with 1000mAh ones. Super fast charge on both! Come on sammy... This isnt a 900mAh feature phone. This is a big battery hogger dual core with a large battery inside!
Sent from my GT-I9100 using XDA App
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I am using HTC's 1000mA charger and still,this happens to some extent,only much less.Try overclocking the hell out of it and then start benchmarking.Charging?Hell no.You may even need to draw power from the house next to yours!

SkulleD_PT said:
I really dont understand why Samsung keeps supplying this crappy charger. Desire Z and iPhone 4 both came with 1000mAh ones. Super fast charge on both! Come on sammy... This isnt a 900mAh feature phone. This is a big battery hogger dual core with a large battery inside!
Sent from my GT-I9100 using XDA App
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I read somewhre in this forum that samsung has set a limit of max amperage on this device to below 700 miliamp( cant remember the exact value for ac charging and usb charging) so thts why the charger is rated to 700mah
Sent from my GT-I9100 using Tapatalk

iznee said:
I read somewhre in this forum that samsung has set a limit of max amperage on this device to below 700 miliamp( cant remember the exact value for ac charging and usb charging) so thts why the charger is rated to 700mah
Sent from my GT-I9100 using Tapatalk
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Click to collapse
That's right,but if the charger was 1000mA like HTC's it would continue to draw those 700mA it needs even while in use.You wouldn't notice any difference at all with it charging while not being used,but when screen is on there is a difference.

They limited charge current to 650 mA in the driver code, so that's why they use a 0.7 A charger. Using a higher output won't help unless someone compiles a new kernel.

I charge the phone until 100%. When unplug, it immediately drops to 85%-90%. On one occassions, it dropped to 40%! What's wrong with it?

iCatchU said:
I charge the phone until 100%. When unplug, it immediately drops to 85%-90%. On one occassions, it dropped to 40%! What's wrong with it?
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Click to collapse
As i posted before...something is always awake on your phone..try looking at your battery graph..and i am sure your device is quiet warm..
Sent from my GT-I9100 using Tapatalk

iznee said:
As i posted before...something is always awake on your phone..try looking at your battery graph..and i am sure your device is quiet warm..
Sent from my GT-I9100 using Tapatalk
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Thanks. But...i tried charging it whilst it was turned off. The icon showed 100%. I then unplug and switched it on. The same happened. So, it should not be Apps related. Right?

iCatchU said:
Thanks. But...i tried charging it whilst it was turned off. The icon showed 100%. I then unplug and switched it on. The same happened. So, it should not be Apps related. Right?
Click to expand...
Click to collapse
I suggest you do a simple trouble shooting...charge your phone to 100% while it is off.
Than unplug, switch on your phone and just leave it for half hour or an hour without doing anything.
Than swith your display on...and go to settings
Select about phone..
Go to battery use and tap on the graph.
It will show you a few horizontal lines.
Make sure your screen on and awake time bars coincide nicely.
While your screen is off your awake bar should be very very minumum... most of the high battery drain casses will have a very short screen on bar but a solid long line of awake time.
This is normally due to some rougue app or process...and you have to narrow it down.
If your graph looks normal..than you could be having a defective battery or in worst case a defective hardware.
Sent from my GT-I9100 using Tapatalk

The max of 0.7 amps is a partykiller... When in my car, I'd like to have my phone record everything (dailyroads voyager as dashcam), while navigating... Definitely discharging there while on stock carcharger! So I will have to choose when I'm going on holiday (12 hours drive...)
Sent from my GT-I9100 using XDA App

I had a same problem before. But after I reflash 2-3 times (literom 1.5 for now) it's gone, and charging normal on car and wall charger while gaming or navigate.

GPS & bluetooth + charger =no charge

While traveling I was using the gps (coPilot) with my bluetooth on, (just for calls) and was getting low on battery!
So... Naturally I plugged in the charger! Guess what! Battery drained nonetheless!
Has anyone else seen this? I have the screen brightness to the lowest setting... But to no avail!
I apologize if it's been covered before, but just looking to see if anyone else had this issue and any suggestions on making that battery not run down while plugged in!
Thanks everyone! Oh, and yes I have a second battery for these occasions!
Sent from my GT-N7000 using XDA App

Yes. covered before and many people see this. May be worth tying a 1amp or higher charger.

Also, if the phone gets too hot, it will stop charging.

I have the same thing... Its just don't charge however it maintain the battery at whatever level it was.. This is simply fixed by getting a higher amp charger

Thanks everyone will get a higher amp charger...
Sent from my GT-N7000 using XDA App

I m having the same prob
Sent from my SGH-I717M using xda premium

same as mine when using the apps to watch movie。
Sent from my GT-N7000 using XDA App

Are any of you guys with problems using the Samsung Cardock , or
are those chargers "random" chargers of other phones ?

my official samsung charger that came with it has decided to pack in after a month of use, it no longer charges at the rate it used to of about 24% an hour and im lucky to get about 5% an hour now. I've tried my old hd2 charger (same 5v 1a output) and it charges without any issues
samung make crap chargers

That's what I think the issue is, I'm using a generic charger and it's not pushing enough juice!
Gonna pick up another charger soon and report back.
Sent from my GT-N7000 using XDA App

I got a 1A car charger with my mount which works ok (cheapo chinese says 1A). I think any car charger with a USB slot which says 'Ipad' would work better, IIRC the ipad needs ~2.2A so it would have plenty of juice.

I've got various car chargers, one at 850mA, one at 1A and one at 2.1A. None of them charge the Note while using sat nav (Copilot) even using night mode (dark backgrounds to maps) and dimming the backlight in between junctions. I've tried the USB lead that came with the Note and a lead from another phone. No improvement.
The phone shows Charging AC because I have the central pins shorted on the chargers, but even that is not enough. I'm thinking the only solution is to buy a proper Samsung charger, which might have some other trick up its sleeve for getting the Note to draw sufficient current.

I have just switched from using co pilot to another satnav app and the phone now charges faster. I knew co pilot was juice hungry. ...
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My Nexus 7 literally takes hours to charge

My Nexus 7 battery takes forever to charge. And this is even when I use my stock cable to the wall charger. I know it takes around 3-4 hours to charge it from dead to full but for some reason mine is only HALFWAY full at the 4 hour mark and I usually have to leave it on the charger the whole night/day for it to be fully charged.
I have no other defects on this product except for this one. And I never dropped it or anything and I'm currently running 4.1.2.
Please help. I know I can't be the only one with this problem.

Definitely use the oem charger (2 Amp compared to 500-850 ma for most) and the supplied USB-3 cable. It will charge faster. After the long initial charge up to 100% mine has been charging pretty well. If I'm down around 10% it can take up to 4 hrs to charge, but the battery is huge compared to most phones. It sounds like something isn't working normally for you. Have you tried turning it off, then charging?

Yes sorry I was unclear in the original post. I'm using everything stock when I charge my Nexus 7. I don't use any other cable. And yes I completely turn it off when I'm charging but yet it still charges horribly slow.

I would test another comparable charger just to make sure it's not the charger or cable itself.

There is a lot of threads that talk about the charger and the possible ones you can & can't use (Nexus 7 is picky). I use a HP Touchpad USB plug and a cable. It does the job well :good:

Saturny said:
There is a lot of threads that talk about the charger and the possible ones you can & can't use (Nexus 7 is picky). I use a HP Touchpad USB plug and a cable. It does the job well :good:
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+1
I use the HP touchpad charger, Playbook charger and KFHD charger. All three of those get the job done fast.
With those three, I don't even need to use the N7 charger lol
Sent from my Nexus 7 using xda app-developers app

Do you keep it on while you're charging it? If so that will definitely make it take longer to charge since it's using power.

Nope.
brando56894 said:
Do you keep it on while you're charging it? If so that will definitely make it take longer to charge since it's using power.
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Click to collapse
I keep mine on, so I can check the % on screen. And long as you don't use it while it's charging, it won't take longer.

Trust me I keep everything that I charge off so that it can charge faster and not be using any power while charging. It seems no one else has gone through this from this thread though. It sucks that I have to get a new charger when the stock charger should be still working fine and perfectly.

As far as i have read the informations on / in box. It said to use the OEM charger only. I didn't really measure time when charging, but it always took maybe 2-3 hours max to charge the device completely.

Try blowing out your micro port with compressed air, had this on my galaxy2
Sent from my Nexus 7 using xda premium

I use a Samsung charger with the usb cord, i for a USA charger.. Mine also uses hours... Good to know IT Will charge netter with others
Thnx
Sent from my Nexus 7 using xda app-developers app

[Q] 3 Hours of Charging = 30% Battery

I'm unsure what's wrong!!!
My phone has been fine, until it died today. I practice a 1 charge a day rule and I let my battery drain completely before I even think about putting it back on the charger.
Today, my phone died a littler earlier than expected, but that's okay because I was using my iPhone for most of the day. I got home at about 11PM and put my phone on the charger at 11:15PM. Here it is, 2:25AM and my phone only has 30% charge.
I've never noticed it charging this slowly before because I typically put it on the charger before I go to sleep and take it off when I wake up. This doesn't seem normal from ANY phone that I've ever used or troubleshooted in my life.
Why so slow? Is everyone's phone just as slow or should I be concerned?
Edit: I am using the charger that came with my phone in the same wall outlet that I've used since I got the phone. Nothing else is plugged into that outlet, either.

It would seem sensible to try a different charger and power outlet.
Sent from my Nexus 4 using xda premium

Your should be at 100% in that 3 hours. Try using a tablet wall charger.

With my phone, sometimes it charges in a flash, and sometimes it's charging for hours, idk why they do this.

drpepe said:
It would seem sensible to try a different charger and power outlet.
Sent from my Nexus 4 using xda premium
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I don't have another charger. All I own is Apple products, unfortunately.
I've done other other outlets throughout the house before posting, but I wouldn't see why the one I'm using is compromised in the slightest. It's charged the phone fine since I've gotten it.

dralways said:
Your should be at 100% in that 3 hours. Try using a tablet wall charger.
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The only Tablet I have is my iPad. I was thinking about just using the A/C adapter, but I was worried that that might mess something up with my luck. LOL.

You can't use the iPhone\iPad chargers as most of them don't comply with the USB charging standard (It will only charge at 500ma, the limit of USB charging).
You said it died quicker than usual as well? Sure nothing is running that drains the battery? Check the battery usage in settings after leaving it unplugged a while and see if you see anything that's using a ridiculous amount of battery.

I've had the same problem. Sometimes I plug mine into a wall charger and it reads Charging (USB) which may be your problem. Other times it reads Charging (AC).
Sent from my Nexus 4 using xda app-developers app

xrsxj said:
You can't use the iPhone\iPad chargers as most of them don't comply with the USB charging standard (It will only charge at 500ma, the limit of USB charging).
You said it died quicker than usual as well? Sure nothing is running that drains the battery? Check the battery usage in settings after leaving it unplugged a while and see if you see anything that's using a ridiculous amount of battery.
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It's been off of the charger for about an an hour and a half and nothing out of the norm is draining the battery. Screen on time is at 40%, but that's because I was reading all of my sports news and stuff from my device.
Interesting thing to note: I'm at 79% on my Nexus 4 after about an hour and a half unplugged and doing regular browsing. I'm at 98% on my 4s with doing just about the same things as I've done on my Nexus 4, and even watching a YouTube video on my 4s. I've also had a great deal of voice calls and texts this morning to my iPhone. They were neck and neck when I first got my N4 on December 10th. Now, it's dying faster. The only difference is that I've installed Spotify on my Nexus 4 since then... Which isn't running.

Chinese281 said:
I've had the same problem. Sometimes I plug mine into a wall charger and it reads Charging (USB) which may be your problem. Other times it reads Charging (AC).
Sent from my Nexus 4 using xda app-developers app
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It was reading USB last night! I thought that was normal, lmao... Thinking it meant "there is a USB cable charging it and not wireless charging."
Hm... The plot thickens, I guess.

Yeah it sometimes reads USB but if you unplug then plug it back in, it will change to AC. Not sure how to fix it but that's your problem right there.
Question: are you stock, rooted stock, or different ROM?
Sent from my Nexus 4 using xda app-developers app

Back of phone hot when charging in car

I received my Nexus 4 in the mail yesterday and I have been charging it while in the car sometimes. Has anyone experienced the back of their Nexus 4 becoming hot while charging the phone inside a car? I'm using a Griffin Car charger and an HTC USB cord from one of my old phones (I've used the charger and cord for other phones, MyTouch 4G and HTC Sensation 4G, without a problem. When I charge the phone with the LG charger or any other wall charger (inside my house) the back of the phone doesn't seem to get warm. Could it be the USB Cord is the issue? Didn't think that would be a problem but I'll try a different one tomorrow. Just wondering if anyone has had a similar experience.

did you use your phone while charging? i'am thingking about navigation?!
mine gets a bit warm while charging, but not noteable if it is uncovert, and it gets warm while google maps runs, both together makes it quite warm, plus, putting it in a carholder where its back is covert...
but nothing you should worry about, other phones do the same...

You don't need to worry until the battery gets above 60°C. Li-po batteries can be damaged above that. Monitor the temp while charging in the car

My back of phone is hot whenever I'm charging! Lol :thumbup:

dicky82 said:
did you use your phone while charging? i'am thingking about navigation?!
mine gets a bit warm while charging, but not noteable if it is uncovert, and it gets warm while google maps runs, both together makes it quite warm, plus, putting it in a carholder where its back is covert...
but nothing you should worry about, other phones do the same...
Click to expand...
Click to collapse
No, I wasn't using navigation but I was playing music via the music player.
Sent from my Nexus 4 using xda app-developers app

estallings15 said:
You don't need to worry until the battery gets above 60°C. Li-po batteries can be damaged above that. Monitor the temp while charging in the car
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Click to collapse
What app do you use to monitor battery temperature? I've never really paid attention to the battery temperature before, this is also the first device I've had without a removalable battery.
Sent from my Nexus 4 using xda app-developers app

After further review, I have realized it just isn't warm when I'm charging it in my car. It also happens when I'm using it (sending texts, phone calls and browsing) and when its charging in the house. The temperature will get to around 51C (used the system tuner app). Has anyone else experienced the back of their Nexus 4 getting warm during normal use and charging? Just trying to figure out if this is a defect or it's normal for the device.
Sent from my Nexus 4 using xda app-developers app

It's normal if you're using stock voltage. I undervolted my Nexus 4 and it rarely gets above 35°C off of the charger.

estallings15 said:
It's normal if you're using stock voltage. I undervolted my Nexus 4 and it rarely gets above 35°C off of the charger.
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Click to collapse
How do you "undervolt" it? I just picked the phone up off the charger (after not using it for ten minutes) and the battery temperature was 36C. This was using the charger that came with the phone.
Sent from my Nexus 4 using xda app-developers app

mwilliams05 said:
How do you "undervolt" it? I just picked the phone up off the charger (after not using it for ten minutes) and the battery temperature was 36C. This was using the charger that came with the phone.
Sent from my Nexus 4 using xda app-developers app
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Click to collapse
You have to unlock the bootloader, root, install a kernel that supports undervolting and lower the voltage that the CPU uses. You see, each chip is different. When creating the stock kernel they figure out what voltage range all phones will work on, then add some to be safe. The higher voltage = more heat. You experiment a little to see how low you can go and have a stable device and leave the settings. It's easier than it sounds.

estallings15 said:
You have to unlock the bootloader, root, install a kernel that supports undervolting and lower the voltage that the CPU uses. You see, each chip is different. When creating the stock kernel they figure out what voltage range all phones will work on, then add some to be safe. The higher voltage = more heat. You experiment a little to see how low you can go and have a stable device and leave the settings. It's easier than it sounds.
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Click to collapse
I was having the same issue and I never thought of lowering the voltage. The thing runs like butter anyway, so it won't hurt for it to slow down just a tad so it doesn't get to 50C.
Thanks.