[Q] Nexus 7 Charging Issues - Nexus 7 Q&A, Help & Troubleshooting

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.

Related

S4 will not charge with AC charger; only USB

Last night I was charging my S4 in my car adapter, but noticed the cattery was still going down. I went home and plugged it into my AC (wall charger) and went to bed. The next morning the S4 was dead and couldn't charge. The only solution was to plug it in my computer and went an hour for it to get some charge back.
I have a root i337m running rootbox 4.1, and I went into TWRP to wiped the phone and installed the ROM again - no luck.
Is this a battery issue, a software issue or a whole device issue? Thanks.
freddywhite said:
Last night I was charging my S4 in my car adapter, but noticed the cattery was still going down. I went home and plugged it into my PC and went to bed. The next morning the S4 was dead and couldn't charge. The only solution was to plug it in my computer and went an hour for it to get some charge back.
I have a root i337m running rootbox 4.1, and I went into TWRP to wiped the phone and installed the ROM again - no luck.
Is this a battery issue, a software issue or a whole device issue? Thanks.
Click to expand...
Click to collapse
I don't think its a rom issue. I tried charging via USB as well and had phone charging a few hours and it ate crap. So I only charge via AC outlet only. USB charges but at a very slow pace.
Reinaldo33897 said:
I don't think its a rom issue. I tried charging via USB as well and had phone charging a few hours and it ate crap. So I only charge via AC outlet only. USB charges but at a very slow pace.
Click to expand...
Click to collapse
I made an error in the OP - I meant to say I left it to charge on the wall and I got nothing.
Right now, the charge light doesn't even come on if I plug it with AC.
freddywhite said:
I made an error in the OP - I meant to say I left it to charge on the wall and I got nothing.
Right now, the charge light doesn't even come on if I plug it with AC.
Click to expand...
Click to collapse
Maybe see the results by changing the charger you're using?
r8revealed said:
Maybe see the results by changing the charger you're using?
Click to expand...
Click to collapse
I've tried 3-4 different chargers and cables, same issue. Charges slowly through PC,doesn't charge at all with AC. Did a factory reset after reverting to stock FW, no luck.
freddywhite said:
I've tried 3-4 different chargers and cables, same issue. Charges slowly through PC,doesn't charge at all with AC. Did a factory reset after reverting to stock FW, no luck.
Click to expand...
Click to collapse
I doubt it's a ROM issue, but there's no harm in reverting back to stock to see the results (assuming you've backed it up). If it all fails, i think you should unroot and send it to Samsung for the warranty. Software problems are somewhat easier to fix here than hardware, so it may be the best option to let Samsung handle it.
I had similar problems with my Note 2 before and now with my S4. What I found was, sometimes the usb cable wasn't tightly plugged into the wall charger. Once I've made sure of this, I've been able to charge (AC) every time.
I found this article that indicates that the S4 is looking for special sauce on the D+D- pins.
http://www.anandtech.com/show/6914/samsung-galaxy-s-4-review/2
Obviously the Galaxy S 4 will charge with any USB charger, but the charge time will simply be longer. Samsung uses a voltage divider and signals the presence of their own charger by sending 1.2-1.3 V across the D+ / D- pins, this is similar to what Apple does with 2.0 or 2.8 V across the pins for various USB chargers they've shipped over the years. This signaling is essentially Samsung's proprietary tablet charging signaling which they've employed on the Galaxy Note 2 and now SGS4, in fact the two use the same exact charger, so it's worth tossing out your old ones and getting the appropriate one to take advantage of the faster charging.
However I do not believe this to be 100% true. I think not all chargers will work..
I took a charger that is very vanilla (Wall charger but the D+D- pins are NC) and it works with the S3 and NEXUS7 but does not work with the S4.
This charger uses a stock USB cable so I took a wall charger that had gone bad but had a dedicated cable and hacked off the end and wired up my own cable...
That works! So it appears that the S4 will only charge properly with certain chargers that do something to the D+D- pins (either shorting them with a resistor like the article indicates
I then took a look at the cable I used to replace. It is a Motorola cable and it has the ID pin pulled high built into the cable... So I suspect that is required for the phone to work... But to fast charge it will need the special sauce indicated above!
Had the same issue and found the solutions which worked for me. Go into the developer mode and deactivate the usb debug mode.
Had the exact same issue. I took a soldering iron to my charging port on my phone. Problem solved. The ID pin had a bad joint.
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app
I have a strange issue, my s4 is detected by pc, charges normally with usb ( wall or pc charge ) my battery is full but when I take the cable from microUSB port and s4 should work with the battery, turns off and consumes no battery, it's like refusing to use the battery and that it is full! battery checked on a sph l 720
I've tried installing other roms with safestrap but I still have the same problem, refuses to consume battery and while the battery is at 100% ,my s4 shows 0% if I disconnect the usb cable... game over. However, I can be on the safestrap menu for hours only with the battery, no problem, is a problem of rom I think but did not know how to fix it .. : (
I'm having the same issue as the original poster. The USB port is good, charges fine when connected to PC (although much slower because of different mVS). Have tried amidst everything and nothing fixes it. I've turned debugging mode off and back on, restore to backup, complete wipe and reinstall of 2 ROMs with and without apps, fix permissions, different kernels, different USB cables... The adaptor is in good condition. But when plugged in while on my phone doesn't recognize that's it's connected. Previously out would give a false charging reading. If off sometimes I got the grey bar battery but note is just vibrating every few seconds. Idk what to do...
crazy_dr0id said:
I'm having the same issue as the original poster. The USB port is good, charges fine when connected to PC (although much slower because of different mVS). Have tried amidst everything and nothing fixes it. I've turned debugging mode off and back on, restore to backup, complete wipe and reinstall of 2 ROMs with and without apps, fix permissions, different kernels, different USB cables... The adaptor is in good condition. But when plugged in while on my phone doesn't recognize that's it's connected. Previously out would give a false charging reading. If off sometimes I got the grey bar battery but note is just vibrating every few seconds. Idk what to do...
Click to expand...
Click to collapse
I'd guess it's the charger. Get a new one
Sent from my Nexus 5 using XDA Free mobile app
I had the same problem. S4 will recognize charger as USB charger, not AC. solution was to clean usb port connector, was some cloth covering wires. then restarted and worked ok
I am having trouble charging the phone the same way. I have reset the phone 3 times and still can't get a charge.

[Q] Odd charging issue. Not typical Nexus 7 batt. issue.

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.

[Q] Charging Nexus 10...

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.

Finicky charging?

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?

Charging issue?! Please help

I have a Nexus 7 2012 tablet (with CM12).
It worked for a few years but I have a kind of charging problem.
I plugged up to charger and for one sec it charges than for one sec it don't. I left it for hours but it only drained the battery and discharged.
I thought that the usb connector was damaged so I replaced it, and I also replaced the battery because it was in bad condition.
Now I still has the same charging-not charging problem. (I tried the new battery with the old usb and the old battery with the new usb and still have the problem)
Any idea what to do?
NOTE: I plugged in an OTG pendrive and it worked fine.
It only has problem with charging.
It's a known issue with Nexus 7 (2012) devices. You need to find a good cable, good charger and probably need to plug in / plg out the charger several times. Sometimes it may help, too, to clean the connector.

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