Battery drain and long charges, please help! - Nexus 7 Q&A, Help & Troubleshooting

So, I recently changed the battery on my N7 (Pure Nexus ROM 6.0.1 with ParrotMod) and started to notice that battery only lasts about 3 to 5 hours, and around 2 and a half with video playback.
Also, a charge from 10% to 100% takes around 12 hours to complete and charges very little or nothing at all when the tablet is powered off.
I thought that the charger was causing the problem (I was using a Galaxy S4 mini charger) but even with the Samsung Galaxy S6 Edge charger (which supposedly has the same input and output as the N7 one's) I got the same results. I also read that the charging port might be misplaced, but that didn't seem to be the case either...
What's happening? HELP!

It 's probably a wrong charger. Use 10w (5v 2amp) one. Generic one can be bought at eBay for around $3. I have same setup on N7 - PN with Parrot Mod, full charge 2-3 hrs at the most
Sent from my Nexus 4 using Tapatalk

First off, use a genuine charger that comes with the device. If problem still persists, it could be the defective charging port that caused the problem. Try changing one by yourself or by having it replaced.

I have had the same problem. I bought my nexus second hand...and the guy said that the battery was broke but it run... So I have checked everything I have installed several roms and bought another battery but same problem... Then I have checked the USB and on the connection to the flat cable is a black thing to attemp the cable to the USB thing. So I closed the thing and it runs. Now battery loads fast again. Maybe the guy before me replaced the USB and missed to check the flatcable connection...

Related

How long does it take your Nexus to fully charge?

Just wondering, how long does it take you guys to fully charge (From anything below 20% to 100%) your nexus 7? Because I've seen a few posts about battery related problems, and personally I think mine chargers slower than it should.
Also, when I use a wire to extend the charger, it's as if it wont charge, for it to fully charge i'd have to leave it on for hours without use, Since they're aren't any plugs where I'd usually sit to use it, I need to move somewhere else cause the wire is quite small.
For example, I've had it on charge since 2PM today, when I plugged it in it was at 14% battery, now (4:20 PM) it's at 63%. This has been without use, just sitting there charging. Plugged in via the charger and wire that come with it, to an extension with 3 other plugs in it.
I received my N7 with about 40% charge and it seemed like it took a really long time on that first full charge. It has been better since. I have heard if you are not using the original cable for the N7, it will dramatically increase the time it takes to charge and it won't show the charging icon. The supplied cable is USB 3 and your other cables are most likely USB 2. You might want to buy a 6 foot or 2 meter USB 3 cable for convenience. Also, use the original 2 amp charger it came with.
Groid said:
I received my N7 with about 40% charge and it seemed like it took a really long time on that first full charge. It has been better since. I have heard if you are not using the original cable for the N7, it will dramatically increase the time it takes to charge and it won't show the charging icon. The supplied cable is USB 3 and your other cables are most likely USB 2. You might want to buy a 6 foot or 2 meter USB 3 cable for convenience. Also, use the original 2 amp charger it came with.
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Click to collapse
Well, that explains why the extender doesn't work, but I haven't been using that to charge it since I noticed it slowed it down allot. I've only been using the stuff it comes with ever since I noticed that. Still VERY slow though, it's only just reached 96% since starting charging it at 2am. so it's taken 5 hours to get from 14% to 96%, pretty sure this isn't right.
I've collected some data on N7 charging and cables issues here.
http://forum.xda-developers.com/showpost.php?p=29983624
My completely drained N7 (<1%) takes approximately 3 hours and 49 minutes to completely charge it (N7 powered off during charging).
janedoesmith said:
I've collected some data on N7 charging and cables issues here.
http://forum.xda-developers.com/showpost.php?p=29983624
My completely drained N7 (<1%) takes approximately 3 hours and 49 minutes to completely charge it (N7 powered off during charging).
Click to expand...
Click to collapse
Which charger do you use?
And good to know it isn't a problem with my nexus I suppose.
Dazzuh said:
Which charger do you use?
And good to know it isn't a problem with my nexus I suppose.
Click to expand...
Click to collapse
OEM charger and OEM cable.

[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?
Click to expand...
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
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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

[Q] recently Verrrry slow charge: Charger/cable got damaged?

At first when I got my nexus 10, it was charging quite nice, overnight would charge from 30% to 100%, but recently it stopped doing so, for example tonight after 8 hours it got from 35% to 70%, all stock: same cable, same charger.
Also, sometimes I used to put it on charge while using it, like when watching video, and it used to charge even if slow, now when doing this it says charging but the battery level goes down....
can the stock charger or cable be damaged? why did it stop charging fast overtime?
I used the its usb cable and charger few times to charge my new OnePlus, which requires a high ampere charge, can this cause the charger to overwork and then damaging its power output?
I read about the pogo charger does the job better, but I also read about the 28/24 usb cables, and I guess that the stock cable is 28/28, they did it like this to sell pogo charger cables. but the main issue here is that with the same combination it was better a month ago....
I have multiple chargers around the house with various amperages that I use for all devices, except I do have a bit of fear using my oneplus chargers with others for your same reason
About a month ago we decided it was worth it to buy the pogo dock on eBay for our nexus ten so it can be used as a digital picture frame when not in use, great decision, it seems to charge faster than any of the other chargers and get to see pics of our newborn all day as well
Consider either this or buying a new cable/charger for much less money. Either way my best guess is this is what you need, but you can always try a factory reset or reflash stock to see if it is a software issue
mcbyte_it said:
At first when I got my nexus 10, it was charging quite nice, overnight would charge from 30% to 100%, but recently it
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Click to collapse
Mine had the exact same problem after about 15 months use. Combine the slow charging with the atrocious battery life and you're left with a barely usable tablet. I later bought the pogo cable and switched chargers to no avail. Then I just said screw this and sold it.
My nexus is 3 months old, so it can't suffer from battery wear down in such little time.
Will try resetting the whole thing and try again....

[Q] Note 3 Battery charging Average Unit?

Hi,
I have a Note 3 N900 version. & I am on Love 89 2.2 Custom Rom
Thing is, My battery charge has suddenly gone down.
I mean it was working pretty well but since last night...it charges real slow.
& the Phone is not even a year old so m confused as to why this is happening.
I checked the charging Unit with Charging Report available on the Playstore & it shows as 300 for both Current & average.
May i know what should be the default charging unit.
Is this the cause from the Rom or the USB cable?
Thank you
Try charging it with an other charger and see if it still charge very slowly... (if you dont have another usb 3 cable, normal microUsb that all other android phones have, fit into the right part of the note3's usb 3 port)
Sent from my SM-N9005 using Tapatalk

Fast charging issue

Hi guys,
I recently brought a new Note 4 two weeks ago and its awesome, but 2 times this week now I've stuck the phone on charge to get a boost & the fast charge facility has not kicked in.. meaning its only charged about 20% in 30minutes.
If I restart the Note it seems to correct itself but it is a bit frustrating that the phone is less than a month old and 1 of its main selling points isn't working properly.
I have got a sm-n910f running Lollipop 5.0.1
My phones not rooted and I usually clear open apps before sticking the phone on charge.
Fast charge is toggled on. Can anyone give me any suggestions to what might fix this?
I put this query into the battery thread this morning but didnt get a response, so apologies for clogging up the forum but I am hopeful that some genius on Xda can give me some help here [emoji3]
Thanks for your help
Fast chargin is working only till 50% If you are more than 50, then it is charging with normal speed.
Thanks @Matin.salat I know this. When put my phone on charge at 15% and went to check it 20-25 minutes later it had only crept up 9% to 24%
do you get the "adaptive fast charger" (or something like that) notification when you plug it in? are you using the supplied cable? power only cables do not work with quick charge; needs to be data+power.
AFAIK Fast Adaptive charging only works if you have the specific adapter (charging block) that is capable of it. Are you using the original charger that came with the Note 4?
Below is a link to the part on samsung's website;
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-TA20JWEUSTA
Hope that helps.
RAF_SHC said:
AFAIK Fast Adaptive charging only works if you have the specific adapter (charging block) that is capable of it. Are you using the original charger that came with the Note 4?
Below is a link to the part on samsung's website;
http://www.samsung.com/us/mobile/cell-phones-accessories/EP-TA20JWEUSTA
Hope that helps.
Click to expand...
Click to collapse
Yep using the correct charger and usb cable that comes with it. I chucked my phone on charge at 14% at 17:45 today. Went to grab my phone at 20:00 and its only at 43% charged.
I'll be taking it back and replacing it tomorrow or sunday.. I must have a faulty handset!!!
Bun-G said:
Yep using the correct charger and usb cable that comes with it. I chucked my phone on charge at 14% at 17:45 today. Went to grab my phone at 20:00 and its only at 43% charged.
I'll be taking it back and replacing it tomorrow or sunday.. I must have a faulty handset!!!
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Hey.. I am using a SM-M910C. I had a similar problem just like you. My device is just 4 months old. Fast Charging used to work properly until a week back suddenly I noticed that it wasnt charging fast. Just like you mentioned, it was charging extremely slow. I checked everything to find out whether the problem was with the phone, power brick or cable. I borrowed my friends cable and tried it on and voila it was working fine. It was showing fast charger connected in notifications. So then I remember that, I had used the same charger and cable to charge my Power Bank before that. And I clearly remember the cable being hot at the time when I removed it. So figured that the cable got burnt off or something. Because the cable needs to have a particular resistance in order to support fast charging. Went and bought a new authentic cable and now fast charging is working as it used to. Never gonna charge the power bank with it anymore.
Hope this helps. Cheers!
azuldio said:
Hey.. I am using a SM-M910C. I had a similar problem just like you. My device is just 4 months old. Fast Charging used to work properly until a week back suddenly I noticed that it wasnt charging fast. Just like you mentioned, it was charging extremely slow. I checked everything to find out whether the problem was with the phone, power brick or cable. I borrowed my friends cable and tried it on and voila it was working fine. It was showing fast charger connected in notifications. So then I remember that, I had used the same charger and cable to charge my Power Bank before that. And I clearly remember the cable being hot at the time when I removed it. So figured that the cable got burnt off or something. Because the cable needs to have a particular resistance in order to support fast charging. Went and bought a new authentic cable and now fast charging is working as it used to. Never gonna charge the power bank with it anymore.
Hope this helps. Cheers!
Click to expand...
Click to collapse
I did the same thing. It took almost 8 hours to fully charge it so i borrowed my wifes S5 charger and voila, fast charging again.
The o2 shop swapped my charger and usb cable and its all good now [emoji3]
fast charging not working
Hi we have similar issues, my Note 4 is almost for months old in my hands and I have no issues with fast charger before..it was just happened after I updated my Android version to 5.1.1 lollipop..and now this happened I started charge my phone at 6:47 pm and finished 9:15 do you think its normal ? sounds stange ! normally before Its finished just only 90 minutes..hope some one can help my problem and fix it.. thank you

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