I`m represantate 4pda thread of Nexus 10. Lots of people experience troubles with charging our Nexus (including me).
Using native charger in turned off tablet it gave only 50% in 8 hours (in my way)
Others say approximately the same.
I have root, unlocked boot, use Gravity Box (xposed). (It would be normal if my case were sporadic, but...)
Do you know any solve of situation?
I am also experiencing this lately. I'm not sure if it's from the kitkat update or not, but same story here, I leave my tablet charge overnight and when I get up it's at 75% after at least 7 hours of charge. I tried stock kernel, thunderkat and ktmanta, didn't solve the problem.
I've ordered and waiting for N10. I was going to immediately unlock, flash stock 4.4 then root and apply Kernel
I've also ordered a Pogo cable as owners seem to get a faster charge, also to reduce wear on the microusb. I assumed I would be using the supplied microusb PSU?
I've had a N7 for 17 months and on it if I was using it, even with 2Amp PSU, it would often just hold its charge, so not gain charge, when used, I'd have to leave it screen-off to charge. So with N10, you've got experience even when OFF (powered off, not just screen blank) it isn't charging? That sounds weird. If however, it is simply screen off, then go to your battery and see which app is keeping your power consumption up and do something about that app surely???
I noticed it immediately with the micro USB cable and stock charger I have been using since I got mine (just after release). Usually 1100-1700 mA charging. I noticed the minute I updated to 4.4 that my charging averaged 600-800 mA on the USB. After an 8 hour charge it was like 46 percent. It really scared me, thought my tablet was going. I tried switching cables/chargers. Stayed the same.
I switched to the stock wall wart and the pogo plug and it jumped right back to 1700-1800mA till 80 percent charge and then starts dropping. Something it had never done with the pogo. I had to search drawers to find the pogo since I had given up on it's poor performance. It has always been about or less than 1000mA, which is why I always used the usb charger. It seems to be much faster charging now, but only with the pogo. USB barely seems to provide enough power to maintain the charge!
That was the first day on 4.4 manual update, haven't checked since that minor update to krt16s to see if it changed. The pogo seems to be quicker than any charging was.
Yeah my problem also appeared arround the kitkat update.
Related
My friend gave me a black berry charger which has always worked for me in stock, cm 7.0, 7.03 but sometimes I have issues with 7.1
I either charge my nook via the official adaptor, a usb cable on my computer or via this bb adaptor at work that has always worked in the past.
But a few times I've left in charging all day at work and then it's in SOD mode. Usually I hold down the button and reboot the nook and it's fine. However the last time it completely drained my battery (even though it was plugged in all day at work) and couldn't get it working again until I charged it with the official charger.
Usually the official charger takes roughly 3 hours for a full charge, trickle charge via usb or this cable takes about 8 hrs. But I've left it plugged in at work and sometimes even after all day it's only 50 % charged and will never seem to reach full charge until I charge it at home with the official charger.
Again, never had the issues prior to 7.1. I've read about the SOD and always considered myself lucky that I never had any SOD issues, but now it seems 7.1 and this charger causes issues, but only sometimes.
Anyone else encounter that?
oh yeah. with my nook charger, though. until I added the patch, I had to turn the screen off before I plugged in the AC adapter, or else it would just turn off. the patch helped immensely, and I also had no issues when I was running the mirage kang. if antone can find/ make a Pdroid patch for the Mirage ROM, I would be set.
I've had a couple of spontaneous battery drains - once when plugged in. They only happened when I was using a live wallpaper so I always chalked it up to that. I've yet to apply any SOD patch, although I am running the latest nightly 253, so if they rolled anything into that I have it.
Hello;
So far I am really enjoying the Nexus 7, except for charging issues. I can only charge it via usb from my Chromebook, when I plug it into the Asus charger or my Nexus S charger, nothing happens; my Nexus S will charge using either charger. I have tried doing a factory reset several times and the problem still exists. Also, I haven'f flashed it and currently I only have Google Apps loaded on it, the latest official Android update (4.1.2) has been done.
Suggestions?
Thanks
Sheldon
If I use the charger and cable that came with the N7, everything works as it should. I tried an alternate charger/cable one time and It didn't show it was charging and didn't show the charge % increasing. But I left it plugged in a couple of hours and when I unplugged it, it updated the battery % and it had gained charge. I think it can be a reporting issue as opposed to a failure to charge. There is something different about the N7 charger or cable that makes other charger/cable combinations report differently.
So I've had my Nexus 7 and have been quite satisfied with it but just my luck, with just over a year of ownership and outside the warranty, it starts acting up.
Basically, my Nexus 7 will no longer charge to 100%. I can already hear the feverish tapping on the keyboard that this issue has been addressed but it hasn't. It's different than the other threads that have popped up, which I've read through and tried the various suggestions. Here's what I've tried to do, none of which work:
- Swapped the USB cord with my Galaxy S4.
- Swapped the charger with my Galaxy S4.
- Borrowed my GF's Nexus 7 and plugged in her battery into my Nexus 7.
- Tried a different electrical outlet.
- Factory reset and battery pull for ~5 minutes.
- Updated to 4.3 (This started just before the update was pushed OTA).
Here's the kicker. It does seem to charge if I plug it into the powered USB ports on my monitor. HOWEVER, it only charges up to about 57%. After which it kind of just hovers there. It'll charge a little more sometimes, or sometimes it'll drain a bit but the average charge is around 57%.
Thoughts? It seems to be a hardware issue since it won't charge my GF's battery either or charge from AC, even though it detects it.
So we've been combatting some finicky charging issues with my wife's new S5 for the past week.
I've worked out a lot of the weirdness due to the fact that my HTC M8's charging brick apparently doesn't work with anything other than the M8 (I have no idea yet what is different about it... 1.5A).
Anyway, despite this we have had no issues using the supplied charger/cable (only used it on first day).
We haven't had any issues using an old Droid 2 charger and cable (1.0 A I think)...although likely it was a slow charge.
But, since we've been out of town for a few days without all our cables, the only think that has worked with NO issue is using a 2.1A output power brick to recharge the phone. Also, it seems that the 2.1A iPad charger worked as well.
What is weird is we also tried 2 identical 1A iPhone charges. Upon first plugin with a 10' 24/28AWG cable, it didn't charge. I removed it and plugged it into the other one and it began charging. I then removed it and plugged it back in the first and it started to charge fine (and yes, I tripled check the connection on the first try).
In short, we seem to just have very strange results. Sometimes it will say it is charging for a few seconds and then stop and sometimes it will not charge using a certain combination, but when you unplug it, try something else, then back to the first it will work!
We've also had issues with the charger in the car where it would keep blinking her phone on and off with a sound. I suspect that this was due to a slow charge bringing the phone to full charge, then dropping (even though plugged in), then going back to full again. But this is just based on what my wife described.
Can anyone explain and/or tell me what the minimum required and the recommended specifications are for a charger/cable on this phone?
i have a Nexus 7 (2012 version) that my daughter-in-law gave me (several years ago) because it would not boot. i previously reinstalled the OS and she was good for a while until the issue resurfaced. so i'd like to reinstall the OS again or install the successor to CyanogenMod.
however, the tablet will not even try to boot now when i turn it on, even if it is plugged in. all that i see is some backlighting. what i would like to know is if this could be due to a battery that is completely dead and can not be charged. i could buy a replacement battery for about $15 but really don't want to waste my money if the tablet should at least boot up when it is plugged in.
gwa000 said:
i have a Nexus 7 (2012 version) that my daughter-in-law gave me (several years ago) because it would not boot. i previously reinstalled the OS and she was good for a while until the issue resurfaced. so i'd like to reinstall the OS again or install the successor to CyanogenMod.
however, the tablet will not even try to boot now when i turn it on, even if it is plugged in. all that i see is some backlighting. what i would like to know is if this could be due to a battery that is completely dead and can not be charged. i could buy a replacement battery for about $15 but really don't want to waste my money if the tablet should at least boot up when it is plugged in.
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It wouldn't boot up if the battery is completely discharged (and dead), even if you plug in. When was the last change of battery done? If it is the initial one which came with the device, it is likely that the battery is dead.
@gwa000 there is another glitch with the battery of the Nexus 7: if the battery is drained too much, it's not even charging. I ran into a similar situation some time ago and I solved it be disconnecting the battery and re-connecting it again. After connecting the charger I finally got the charging animation.
AndDiSa said:
@gwa000 there is another glitch with the battery of the Nexus 7: if the battery is drained too much, it's not even charging. I ran into a similar situation some time ago and I solved it be disconnecting the battery and re-connecting it again. After connecting the charger I finally got the charging animation.
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i think that this was the problem, that the battery was drained to much and would not even try to charge. i previously tried disconnecting/reconnecting batter to no avail.
came across this and this solved the problem:
laptopdoctor.wordpress.com/2015/08/26/jumpstarting-battery-in-bricked-google-nexus-7-tablet-from-asus
it partially charged the battery and i was able to complete the charge normally.
now i can at least boot up (sort of). i get the spinning circles ("boot loop"). i've tried the normal Recovery Mode options to no avail so i'll have to reload the OS. i have a feeling that there is a RAM (i.e. memory) or Flash memory (file storage) issue as this has happened before. but i'll post questions concerning those in another thread.
thanks!
I've run into this issue plenty with my Nexus 7 since it isn't used much.
You can plug the Nexus 7 into a 2Amp or greater charger that is on a switch of some sort (power strip, wall switch, etc) and flip the switch on and off roughly every 3 seconds (turn it on until you see the backlight flicker for a second, then turn it off, repeat). For me it takes about 2-3 minutes of doing this and then I get the charging animation.
If you don't have a switched outlet available, removing the USB from the charger (NOT FROM THE NEXUS) and plugging back in works as well, just more tedious.
---------- Post added at 02:00 PM ---------- Previous post was at 01:57 PM ----------
gwa000 said:
came across this and this solved the problem:
laptopdoctor.wordpress.com/2015/08/26/jumpstarting-battery-in-bricked-google-nexus-7-tablet-from-asus
it partially charged the battery and i was able to complete the charge normally.
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Click to collapse
That solution is terrifying. 5V USB is NOT a good way to supply voltage to a lithium cell. If you have a dedicated lithium charger and connected direct that would be one thing but I would suggest never doing what that website suggests again, as unregulated voltage can cause a lithium cell to explode.
pizzaboy192 said:
I've run into this issue plenty with my Nexus 7 since it isn't used much.
You can plug the Nexus 7 into a 2Amp or greater charger that is on a switch of some sort (power strip, wall switch, etc) and flip the switch on and off roughly every 3 seconds (turn it on until you see the backlight flicker for a second, then turn it off, repeat). For me it takes about 2-3 minutes of doing this and then I get the charging animation.
If you don't have a switched outlet available, removing the USB from the charger (NOT FROM THE NEXUS) and plugging back in works as well, just more tedious.
---------- Post added at 02:00 PM ---------- Previous post was at 01:57 PM ----------
That solution is terrifying. 5V USB is NOT a good way to supply voltage to a lithium cell. If you have a dedicated lithium charger and connected direct that would be one thing but I would suggest never doing what that website suggests again, as unregulated voltage can cause a lithium cell to explode.
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believe me i was sort of apprehensive about doing it and only did it for two 15 minute cycles!! if it happens again i'll try your method. when i was trying to charge it normally i was using my Nexus 7 (2013) charger which outputs only 1.35A (since my daughter-in-law never gave me her charger). i ended up completing the charge using my Asus laptop charger which is 2.0A (which is what the original Nexus 7 (2012) version used). don't know it i tried using the 2.0A charger from the outset would have allowed it to charge. my impression is the that amperage only affects the speed of charging. plus from what i read on the net if the battery gets in a deeply discharged state the normal charging would not work. although i will try your method should this re-occur.
thanks!
gwa000 said:
believe me i was sort of apprehensive about doing it and only did it for two 15 minute cycles!! if it happens again i'll try your method. when i was trying to charge it normally i was using my Nexus 7 (2013) charger which outputs only 1.35A (since my daughter-in-law never gave me her charger). i ended up completing the charge using my Asus laptop charger which is 2.0A (which is what the original Nexus 7 (2012) version used). don't know it i tried using the 2.0A charger from the outset would have allowed it to charge. my impression is the that amperage only affects the speed of charging. plus from what i read on the net if the battery gets in a deeply discharged state the normal charging would not work. although i will try your method should this re-occur.
thanks!
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Click to collapse
Glad it's working! I use an old HP touchpad charger or an Anker charger for all my devices.
The underlying cause of it not booting is due to the battery having smart protection so it doesn't explode when it gets too low. A multimeter will say 0v on the battery controller output, but if you were to probe the actual battery cell output it may be anywhere from 1.8v to 3v. I'm not sure the exact cutoff voltage. If the physical cell was at 0v it would never recharge, it would just explode once power is applied.
The method online and my method both do the same thing. We shock the smart controller and trick it into charging. My method is a trickle charger method, where regulated charging voltage is applied for a few seconds safely until the tablets charging circuitry detects if the battery is OK or not. The 3 seconds it takes to flash the display is that initial test. When it fails the test the charging circuitry shuts down.
By blasting 5v into what is probably a 3.3v (or 6.6v) circuit, you're doing the same thing, but just bypassing the tablet charge circuitry that shuts down when it can't see the battery.
I will say the toggle power to the charger method works for anything that has a battery, to a point. I've had it work for windows tablets and laptops, iPods and iPads, even the occasional USB battery bank.