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I find that when I tether via PDANet using a USB that the battery will slowly drain depending on how much data usage is going on.
I'm assuming this is normal as it happens with the stock battery & the extended battery.
However, if I do wifi tethering via Barnacle Wifi it does not drain... but then again, the speeds also aren't as fast.
hmmm... õ_Ô
every application is different in regards to battery usage and whatnot. if u like the speed of pdanet, keep it and plug it into the wall. it should be enough to charge through the drain.
th3_g00b said:
every application is different in regards to battery usage and whatnot. if u like the speed of pdanet, keep it and plug it into the wall. it should be enough to charge through the drain.
Click to expand...
Click to collapse
well, it is being plugged in while using PDANet... that's how it works. connecting the phone to your PC via USB cable & 'tethering'... so when you say 'keep it plugged in', are you implying that there's some sort of USB splitter cable i should be using to connect my phone to my PC and the wall jack at the same time? õ_Ô
All i do is plug the phone into the pc and leave it for a minute then activate PDAnet and my power is fine...
Jrocker23 said:
All i do is plug the phone into the pc and leave it for a minute then activate PDAnet and my power is fine...
Click to expand...
Click to collapse
I've done that before to. It seems to happen primarily when I'm downloading something. If I'm just doing ordinary web browsing then it does not happen.
When I download via wifi, it averages 100Kb/s... and no battery drain
When I download via PDANet, it averages 700Kb/s... battery drain city
The phone gets very hot also(shouldn't be a reception issue since it'll have full bars and get hot). and of course, it does not get hot doing wifi.
I seem to remember reading a few threads in the past about the TB not taking a charge if it gets too hot and basically overheating. I know mine gets really warm when using navigation and plugged into a cigarette lighter. It may be worth it try a different microUSB cable if you have one handy.
I guess moving all those bits around generates a lot of heat
As for battery drain, you may try a different "preferably on the back of your pc" usb port. Of course the rom\kernel your running also has an effect on the heat generated. Just my own personal experiences. Hope it helps
sadly, yes i've already tried different microUSB cables and even tried it on different laptops. i've used both Sense & AOSP based roms with various kernals/radios and have always seemed to have this issue.
maybe i'm pushin' this old phone too much. ;P
I have read multiple posts talking about battery life problems suffered after the ICS update. However, my question is regarding the time it takes to charge the phone using a usb. I know the fact that usb charging is slower than wall charging. But what i am comparing is usb charging before and after the ICS update. My phone is not rooted and has the OTA update from motorola. Also, it is a RAZR and not RAZR MAX.
The question is, has anybody noticed that usb charging is slower after the ICS update? I used to plug in my phone with usually 50-60% battery life in the mornings and it always used to be fully charged before lunch. Now, the whole day goes by and it barely reaches 100%.
The phone, the usb cable and the computer are all the same. Only the software has changed.
My initial guess is that the 'charge only' option that used to be available before did a better job of sending more current than the options available under ICS.
Does anybody know of a way to fix it ? With or without root?
Thanks,
Kavik Bachani
I ran into your post after googling the same issue for my cousin; also started after ICS upgrade, but her phone is Xperia S, and its not only affecting USB charging, but even the wall charger is much slower now, more than 4hrs plugged for 30% charge only, when it used to take less than 2hrs for full charge before.
I've always had trouble charging my phone on a computer via USB. It goes way faster when on a wall charger.
kavik_bachani316 said:
I have read multiple posts talking about battery life problems suffered after the ICS update. However, my question is regarding the time it takes to charge the phone using a usb. I know the fact that usb charging is slower than wall charging. But what i am comparing is usb charging before and after the ICS update. My phone is not rooted and has the OTA update from motorola. Also, it is a RAZR and not RAZR MAX.
The question is, has anybody noticed that usb charging is slower after the ICS update? I used to plug in my phone with usually 50-60% battery life in the mornings and it always used to be fully charged before lunch. Now, the whole day goes by and it barely reaches 100%.
The phone, the usb cable and the computer are all the same. Only the software has changed.
My initial guess is that the 'charge only' option that used to be available before did a better job of sending more current than the options available under ICS.
Does anybody know of a way to fix it ? With or without root?
Thanks,
Kavik Bachani
Click to expand...
Click to collapse
there can be more than one issue for this.
1) could be the battery stat. but to wipe this you need to root your phone. Maybe just charge and discharge it a few times completely (till it shut's down automatically)
2) other charging source? are you using another USB-Port to charge it? it could happen, cause your phone has to 'tell' the USB port it's some kind of high power device to get 500mA and not like mouse and keyboard only 100mA. does the PC recognize the phone? are your usb ports unlocked (yeah, i know... even locked ports supports power, but maybe not enough...)?
3) do you charge it while running? or in shut down state? ICS seems to drains some more battery life while running then GB...
PS: charge only option is no more usable but ask an IT-provider to get a 'power-only' usb cable. i've got some and it only provides current, it's like normally charging
PPS: best rooting solution > get Arctic ICS (GSM/CDMA) or Epsilon (GSM) ROM, usb charging in less then 2h! for better result use the 'power-only' usb cable mentioned above
Another essencial tip is always charge through back usb, never in front and disable wifi, gps, data, bluetooth it will make phone charge more and faster.
xpc21 said:
Another essencial tip is always charge through back usb, never in front and disable wifi, gps, data, bluetooth it will make phone charge more and faster.
Click to expand...
Click to collapse
mentioned that too, is there some explainable reason for the front / back end differences?
I've always had trouble charging my phone on a computer via USB. It goes way faster when on a wall charger.
Click to expand...
Click to collapse
I agree. Wall charging is always way faster than usb charging but my wall charger usually stays at home. That is why, i use the usb charging option at work.
there can be more than one issue for this.
1) could be the battery stat. but to wipe this you need to root your phone. Maybe just charge and discharge it a few times completely (till it shut's down automatically)
Click to expand...
Click to collapse
My phone has discharged completely twice since the ICS update. I am not sure but that might have reset the battery stat. Is there a way to check it on a non rooted device?
2) other charging source? are you using another USB-Port to charge it? it could happen, cause your phone has to 'tell' the USB port it's some kind of high power device to get 500mA and not like mouse and keyboard only 100mA. does the PC recognize the phone? are your usb ports unlocked (yeah, i know... even locked ports supports power, but maybe not enough...)?
Click to expand...
Click to collapse
The phone is plugged in to a USB port on the computer and is recognized as a Motorola RAZR. I also have the Motorola Device Manager installed which i believe installs all the necessary drivers.
Also, I have tried multiple ports (front and back) and i have seen similar results in terms of the time it takes to fully charge the phone.
3) do you charge it while running? or in shut down state? ICS seems to drains some more battery life while running then GB...
Click to expand...
Click to collapse
I do charge it while running and wifi on. Data, Bluetooth, GPS are off. I always used to charge it this way. Its sad that the same state in ICS drains more battery than GB.
PS: charge only option is no more usable but ask an IT-provider to get a 'power-only' usb cable. i've got some and it only provides current, it's like normally charging
Click to expand...
Click to collapse
I didn't know of a charge only usb cable. I'll try to get my hands on one and let you know the results.
PPS: best rooting solution > get Arctic ICS (GSM/CDMA) or Epsilon (GSM) ROM, usb charging in less then 2h! for better result use the 'power-only' usb cable mentioned above
Click to expand...
Click to collapse
I have so far avoided the root option since i am a little scared of bricking the phone / what if i am not able to restore it back to stock / unable to update phone to future software versions etc.
How does rooting the phone increases the speed of usb charging? Is the software that is being flashed on the device modified in certain ways that is not done as part of the .211 OTA update?
I have also read about the .215 leak. Do you know if the usb charging speeds are different between the two .211 and .215 versions?
kavik_bachani316 said:
...
I have also read about the .215 leak. Do you know if the usb charging speeds are different between the two .211 and .215 versions?
Click to expand...
Click to collapse
For me i don't have any experiences with CDMA phones but what i read was a significant better signal state and battery life in .215 ...
Looks like they improved the system processes / memory usage to get less battery drain. This should be good for charging, because while charging it would drain less battery life / it's charged faster.
kavik_bachani316 said:
I have so far avoided the root option since i am a little scared of bricking the phone / what if i am not able to restore it back to stock / unable to update phone to future software versions etc.
How does rooting the phone increases the speed of usb charging? Is the software that is being flashed on the device modified in certain ways that is not done as part of the .211 OTA update?
Click to expand...
Click to collapse
Rooting itself will not bring you any advantage in battery drain / charging times. But a rooted phone is open for kernel tweaks and custom ROMs.
Tweaks are used to improve the CPU to get more power or better battery life.
ROMs can be de-odexed / de-bloated to get rid of every senseless app or system process that drains battery while running in the background.
And this improves your battery life AND charge times
PS: There should be some stock ROM from EternityProject as emergency unbrick for CDMA too. Just use the search function, you should be able to go back to stock from every custom ROM.
I love my Mega. It is by far the best phone Ive ever had. But, the problems I have with the power usage and management on the device are a total nightmare.
1) The discharging nightmare:
The battery lasts NOTHING. Basically I get about 5 hours of use.. maximum.. no matter what I do.. and I have slimmed down to the ROM to having that NOTHING active.. I literally am left with active 6 services and I monitor CPU usage that is always near zero with NO apps hogging resources. From what I monitor on the device's battery usage, it's clearly always about 90% from the display! And yes, I dim the screen as much as I can of course, but usually not below 1/2way.. I hate screens too dim. However even just on standby with the screen off I still lose about 5% to 8% of battery an hour. Worse, even with the device Powered OFF, I still lose about 20% of battery a day. The ONLY way I have found out to control battery drain completely, is to take the battery out. That's it. Anyone else with similar symptoms and a fix or, is just that the stock battery totally sucks??? Also, any other off brand batteries are any better?.. (not the fat ones rated at much higher amps but that have an extra bulge.. that I don’t want)..
2) The charging nightmare:
This to me is the worse problem. It is bad enough how quickly this device issues battery, bit not nearly as bad as trying to charge efficiently again. I now have tried 3 different chargers/brands (and cables) to try fix the charging problem that is, it takes HOURS and HOURS to charge the battery. I am talking 5 to 6 hours to get it charged and if the screen is on and Im using the device it actually charges NOTHING at all and still keeps discharging (albeit much slower of course)... the fact is that the charging process is so pathetically slow that is less than real-time which means, with the device connected to power supply, the battery STILL drains if I try use it. This is absurd. However, mysteriously enough I have found ONE way that charges the phone super fast.. using a SONY External Power Pack (model CP-F1L) rated at 2200mAh. This is seems crazy because the power output of an external power pack should be much lower than the stock (and other Samsung) USB chargers.. but, it's what works.. the ONLY thing that works. And I have noticed that when connected to a USB Power charger, the Mega's Red LED light turn on faded.. however, when connected to the SONY External Power Pack, is bright red. Clearly more juice going in.. or something like that. Again, anyone else with similar symptoms and a fix the charging time, or, any good recommendation on a extra strong USB power adapter/charger that will make this thing at least charge faster?
Thanks in advance for the input and advice:silly:
Sounds like something is not letting your phone sleep or the battery is defective. Try putting CPU spy on it and let it set for a while. Then check to see if it is getting into deep sleep or if it is even stuck at a certain frequency.
There is an app on the playstore called Galaxy charging. Try it to see what rate it is charging. Though with the rate your phone discharges, the charger may only being supplying an amount just over the drain rate which is why it takes so long to charge.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Yes this is not normal, I get five hours screen time on fifteen hours usage.
Sent from my GT-I9205 using Tapatalk 2
Yep, something wrong there. I'm stock and this thing won't quit :good:
I would flash the stock rom back into your phone and see how the battery works then as this not normal as mentioned by other members as I am still on the stock rom but rooted only and I have great battery life.
That is were to start by flashing the stock rom and if no change then battery or maybe a hardware problem.
Did you have good battery life before you starting flashing with the phone or did this occur after the stock rom was removed and custom rom with stuff removed to gain performance?
Sent from my SGH-I527M using xda app-developers app
Sometime i got 96% bug
Battry is fully charged = 100%
remove charger
Reboot device
Suddenly Battery become = 96%
ps000000 said:
Sometime i got 96% bug
Battry is fully charged = 100%
remove charger
Reboot device
Suddenly Battery become = 96%
Click to expand...
Click to collapse
You could try to remove the battery from the phone for about 5 secs and re-install and see it that helps as sometimes if you take the charger off as soon as it is done charging it might not show 100% at times when booting as I leave mine on for a bit longer and it seems to help..even though charge light is green..I leave it longer on.
If your phone is rooted get a app called battery calibrator from the google store as it is free and install it and just before you shut down the phone to charge wipe the battery stats with this app and then shutdown phone and fully charge and then see how the battery works after the battery stats wipe as that can usually help.
Sent from my SGH-I527M using xda app-developers app
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Mad383Max said:
Sounds like something is not letting your phone sleep or the battery is defective. Try putting CPU spy on it and let it set for a while. Then check to see if it is getting into deep sleep or if it is even stuck at a certain frequency.
There is an app on the playstore called Galaxy charging. Try it to see what rate it is charging. Though with the rate your phone discharges, the charger may only being supplying an amount just over the drain rate which is why it takes so long to charge.
Click to expand...
Click to collapse
Thanks for the tip. Installed the app you recommend, now I understand better. With the stock Samsung USB charger I get 420 readings. With the other 2 chargers I get 500 and 540. However, with the Sony External Power Pack I get 1900!..no wonder it charges super fast with it! My question now is what's up with all the USB chargers I have? I even tried my old Galaxy Tab 7 charger (strongest rated charger I have) and still only feeds 480. This is all so bizarre. So, where to get a super strong charger for the Mega?
(sorry.. by whatever reason my reply got posted 4 times.. so strange. I try delete the first three but cant)..
VeEuzUKY said:
Thanks for the tip. Installed the app you recommend, now I understand better. With the stock Samsung USB charger I get 420 readings. With the other 2 chargers I get 500 and 540. However, with the Sony External Power Pack I get 1900!..no wonder it charges super fast with it! My question now is what's up with all the USB chargers I have? I even tried my old Galaxy Tab 7 charger (strongest rated charger I have) and still only feeds 480. This is all so bizarre. So, where to get a super strong charger for the Mega?
(sorry.. by whatever reason my reply got posted 4 times.. so strange. I try delete the first three but cant)..
Click to expand...
Click to collapse
Usually when this happens there is something wrong with the USB cable not necessarily the charger. Is the sony cable a USB type cable or a hard wired one? If it is USB type try using it with the other chargers and see what your results are.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
Mad383Max said:
Usually when this happens there is something wrong with the USB cable not necessarily the charger. Is the sony cable a USB type cable or a hard wired one? If it is USB type try using it with the other chargers and see what your results are.
Click to expand...
Click to collapse
Yes indeed I notice the Sony Power Pack cable is short and thick. The Samsung cable is long and thin. I get much higher charging power using the thick short cable. Maybe I need go shop for a proper longer/thicker cable.
VeEuzUKY said:
Yes indeed I notice the Sony Power Pack cable is short and thick. The Samsung cable is long and thin. I get much higher charging power using the thick short cable. Maybe I need go shop for a proper longer/thicker cable.
Click to expand...
Click to collapse
I've certainly found the USB cable makes a big difference to the charging speed. I got a couple of 2m cables off Ebay and they're hopelessly slow, but the stock Samsung cable is fast. I just wish it was a bit longer!
I have the same issue
I have the Sprint Mega. Not refurbished and original factory state but I have horrific charge/discharge issues. Right now, my phone just got to 100% charge which I then unplugged the charge cable. Within 5 mins, I went from 100% to 96% and it is losing battery even quicker.
VeEuzUKY: It's been a while but do you still have this phone? Any updates? I should prob invest in a thicker USB cable like you've describe. It has the most charge rate.
I got my mega 6.3 last week. Since then it has said 100% charged... even when charging or dead. So I got a new battery thinking it was the battery but its obviously not and im not sure what it is that could be the problem. Im not sure if its crucial for my phone, if it can be fixed easily and cheaply, or if I need to return my phone to the place I bought it from.
So i just played with Custom ROMs to find the best for me...
But from one point my Phone f*cked up the battery detecting...
CM9 and CM9 detect the battery at 45% and then he Level instantly just drop to 0%...
I cant even restart my phone, so i guess the battery really went out...
So how can i fix, that the ROM would not detect it 45% but 3-4% ?
And let me fully chage my phone ?
Stock rom Always Detect it 100% and then randonly the phone shut down in random times (cuz it drops the level to 0%)
I've tried the "Fully-Charge, Fully-Discharge" But the ROM still detect the Battery wrong...
Even tried to delete the battery stats...
Any solution, or idea ?
I currently use CM with the built-in CM9 kernel...
I think its battery problem.use a new battery.ur prblm will be solved
Sent from my WT19i using xda premium
RabirX said:
So i just played with Custom ROMs to find the best for me...
But from one point my Phone f*cked up the battery detecting...
CM9 and CM9 detect the battery at 45% and then he Level instantly just drop to 0%...
I cant even restart my phone, so i guess the battery really went out...
So how can i fix, that the ROM would not detect it 45% but 3-4% ?
And let me fully chage my phone ?
Stock rom Always Detect it 100% and then randonly the phone shut down in random times (cuz it drops the level to 0%)
I've tried the "Fully-Charge, Fully-Discharge" But the ROM still detect the Battery wrong...
Even tried to delete the battery stats...
Any solution, or idea ?
I currently use CM with the built-in CM9 kernel...
Click to expand...
Click to collapse
How old is the battery? What charging cable are you using and what is the cable plugged into?
If the battery is more then a year old it could be 'tired' and not holding a charge correctly (trying another known good battery in your phone will determine this, as will trying your battery in another phone, and if it works well you may have more issues to deal with). If you got the phone second hand, you have no way of knowing the battery's history. Repeated overcharging is also not recommended, as well as leaving the battery in very hot places as it can damage the onboard circuitry in the battery.
Cheap aftermarket (non OEM) USB cables are not that great imo, they are generally not as well made and soon get loose connections, resulting in poor connectivity (charging with a bad cable can also damage the battery). Always use the original cable or a good quality aftermarket one, like Belkin.
Charging the phone from a USB port on a PC or laptop (and/or via a USB hub) is not as efficient as charging it directly from a wall mains USB adapter, because the power often gets interrupted. Ideally for the best charge you should turn the phone off and use a wall/mains socket USB lead, so as give a direct, constant, power supply to charge a battery. A typical full charge is done in two hours. If you charge this way and the battery still has issues buy a new one.
smirnofred said:
How old is the battery? What charging cable are you using and what is the cable plugged into?
If the battery is more then a year old it could be 'tired' and not holding a charge correctly (trying another known good battery in your phone will determine this, as will trying your battery in another phone, and if it works well you may have more issues to deal with). If you got the phone second hand, you have no way of knowing the battery's history. Repeated overcharging is also not recommended, as well as leaving the battery in very hot places as it can damage the onboard circuitry in the battery.
Cheap aftermarket (non OEM) USB cables are not that great imo, they are generally not as well made and soon get loose connections, resulting in poor connectivity (charging with a bad cable can also damage the battery). Always use the original cable or a good quality aftermarket one, like Belkin.
Charging the phone from a USB port on a PC or laptop (and/or via a USB hub) is not as efficient as charging it directly from a wall mains USB adapter, because the power often gets interrupted. Ideally for the best charge you should turn the phone off and use a wall/mains socket USB lead, so as give a direct, constant, power supply to charge a battery. A typical full charge is done in two hours. If you charge this way and the battery still has issues buy a new one.
Click to expand...
Click to collapse
First of all, the Phone is manufactured in 11W41 (2011 Week #41) and the battery in 11W39 (2011 Week #39)
I use a tipical Micro USB charger which does not connect to the wall with USB but the cable directly integrated into the adapter...
And the phone's shipped official cable to charge throught my PC...
The battery worked fine before i forgot to delete battery stats and flashed a ROM...
After that, all ROM is getting fake battery data...
After using my phone i noticed:
-When the phone displays 70-80% charge, the battery actually have 10-15%
-When the battery reach 0% the phone not just jumps to 0% but the Phone shut down within a half second (as no more energy)
-When i charge it to 3-4% the phone show 80% again...
-So i can charge it to about 10 or max 15% when the OS detect 100% and does not charge it further more, which prevent me from properly re-calibrate the battery stats, cuz 10-15 will be always the max charge of the battery...
Now i'm looking for some kind of Mod / App that fake the Battery level to the OS (for example lock it to 5% and the OS continue to charge the battery) i know its dangerious cuz if i'm not aware i'll overcharge it and it will die permanently, but i have no better idea ATM...
Update: Sometimes after my phone dies from no remaining electron in the battery It displays 5% charge when i switch it on while connected to a charger (the only way i can switch it on) And starts to increase.. (5-6-7-8 etc..)
But sometimes it instantly jumps up to 70-80% if i think right when the screen switches of..
So i enabled "No-screen-off-whili-on-charger" and letit charging..
Will notice you about the result...
RabirX said:
First of all, the Phone is manufactured in 11W41 (2011 Week #41) and the battery in 11W39 (2011 Week #39)
I use a tipical Micro USB charger which does not connect to the wall with USB but the cable directly integrated into the adapter...
And the phone's shipped official cable to charge throught my PC...
The battery worked fine before i forgot to delete battery stats and flashed a ROM...
After that, all ROM is getting fake battery data...
After using my phone i noticed:
-When the phone displays 70-80% charge, the battery actually have 10-15%
-When the battery reach 0% the phone not just jumps to 0% but the Phone shut down within a half second (as no more energy)
-When i charge it to 3-4% the phone show 80% again...
-So i can charge it to about 10 or max 15% when the OS detect 100% and does not charge it further more, which prevent me from properly re-calibrate the battery stats, cuz 10-15 will be always the max charge of the battery...
Now i'm looking for some kind of Mod / App that fake the Battery level to the OS (for example lock it to 5% and the OS continue to charge the battery) i know its dangerious cuz if i'm not aware i'll overcharge it and it will die permanently, but i have no better idea ATM...
Update: Sometimes after my phone dies from no remaining electron in the battery It displays 5% charge when i switch it on while connected to a charger (the only way i can switch it on) And starts to increase.. (5-6-7-8 etc..)
But sometimes it instantly jumps up to 70-80% if i think right when the screen switches of..
So i enabled "No-screen-off-whili-on-charger" and letit charging..
Will notice you about the result...
Click to expand...
Click to collapse
try reflash stock.ics ftf should fix this
Already tried, the Stock rom always showed 100% charge, and when the battery ran out, just powered off...
(Jumped from 100 to 0 instantly)
As i mentioned, in the reply you quoted, today it started charging from 0...
It went good, but somewhy, it just stopped at 26% and not a single volt went into the Battery...
As i Pulled out the Cable, the indicator jumped to 100 instantly...
Can you link several stock ROMs ?
I've tried with the 4.0.4 Android
but maybe the 2.3 can still work with it...
RabirX said:
Already tried, the Stock rom always showed 100% charge, and when the battery ran out, just powered off...
(Jumped from 100 to 0 instantly)
As i mentioned, in the reply you quoted, today it started charging from 0...
It went good, but somewhy, it just stopped at 26% and not a single volt went into the Battery...
As i Pulled out the Cable, the indicator jumped to 100 instantly...
Can you link several stock ROMs ?
I've tried with the 4.0.4 Android
but maybe the 2.3 can still work with it...
Click to expand...
Click to collapse
but i think theres some HW damage. even if not rhe battery maybe some config chip is broken or whatever on the board. normally flashing a stock.ics.ftf resloves all software issues, as its resets all stuff to factory..
anyway, here u can find links to other android versions: http://talk.sonymobile.com/t5/Andro...y-Bean-ICS-Ice-Cream-Sandwich-and/td-p/154389
bejunk said:
but i think theres some HW damage. even if not rhe battery maybe some config chip is broken or whatever on the board. normally flashing a stock.ics.ftf resloves all software issues, as its resets all stuff to factory..
anyway, here u can find links to other android versions:
Click to expand...
Click to collapse
One solution still, that my frind has the same phone as me, so when i meet him, he can charge my battery to really full and maybe when i insert it to my phone it might work...
Is anyone else having charging issues? I'm having legitimate charging issues to the point where I've only been able to get a full charge once. The full charge may have been prior to root (I'll have to experiment more) but let's face it... This is a nexus. The majority of users are rooters and I haven't seen anyone else with this issue.
To preemptively answer a couple of questions; yes I am charging with the stock cable (and actually also a nexus charge cable from the play store which has slightly better amperage) and yes I am charging via an outlet (ac) as opposed to USB charging.
Also of significance, I am even powering the tablet down as to eliminate the possibility of a rogue process or wake lock consuming more battery than I'm providing. I'll literally plug the tab in at bedtime and wake up to see it at 27% where it was when I plugged it in.
I always confirm that it's charging either via the charge animation while powered off or the battery stats screen while powered on..
Somehow while I was using it, I managed to get it charged to about 57% and powered down and plugged in for the night. It was sadly in the same place in the am. We're talking 8-12 hours of confirmed charging and no gain.
So did I just get a faulty device? I'd blame it on the charger but I've tried two with the same results. I'm considering getting a replacement to see if I have different results. I worry I'll see the same thing.
Sounds like you may have a defective device. You've tried everything I'd recommend. I have the device and don't have your problem. So I don't think you'd have the same problem with a need device. There is a thread here were others have had charging difficulties
http://forum.xda-developers.com/showthread.php?p=56807546
Sent from my Nexus 9 using XDA Free mobile app