Develop Bugs

charging time on Gnex

I upgraded to Jelly Bean the day before yesterday. But upgrading I've found that my charging time gone up quiet a bit. Its taking almost 30-40% more time to charge than it used to do earlier on ICS (stock). I'm running stock Jelly Bean on my Gnex. Is someone else also having this issue?

For me, approximatively 2-3 hours for full charging.
I think its more faster than ICS

I think I'll try different chargers to check the issue..

My GN is full in just 1 hour.

PouleY said:
My GN is full in just 1 hour.
Click to expand...
Click to collapse
That is what I also used to get before moving to 4.1.1

Earlier my phone used to get warmer while charging and now is completely cold.
Is there any solution or reason for the slow charging?
Sent from my Galaxy Nexus using xda app-developers app

vins18 said:
For me, approximatively 2-3 hours for full charging.
I think its more faster than ICS
Click to expand...
Click to collapse
I am in this time frame

Hm... I'm no expert at this, but maybe JB slowed down the charging amount so GNex doesn't get hot when charging. I found my GNex to charge a bit longer after the update too. But now when I'm using my GNex, it doesn't get as hot as 4.0.x

Takes a couple hours. But completely dependent on the charger and cable. Long cables have more line-loss, and chargers vary from 500mA to 2.1A in output.

martonikaj said:
Takes a couple hours. But completely dependent on the charger and cable. Long cables have more line-loss, and chargers vary from 500mA to 2.1A in output.
Click to expand...
Click to collapse
I use the stock Samsung charger so
Sent from my Galaxy Nexus using xda app-developers app

3 hours using fast charge and 4 hours without fast charge.

kyokeun1234 said:
I use the stock Samsung charger so
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Stock charger runs at 1 amp. If you are using a custom kernel it may or may not support the full charging current that the phone supports.
Sent from my Sony Tablet S using xda premium

martonikaj said:
Takes a couple hours. But completely dependent on the charger and cable. Long cables have more line-loss, and chargers vary from 500mA to 2.1A in output.
Click to expand...
Click to collapse
LOL what? Longer cables in NO WAY effect charging time.
LOL... that's a good one. Also, the Galaxy Nexus charger is rated at 1 amp. You should not use a charger OVER 1 amp or you will damage the phone's charging circuit.

And I used to thought the higher Amperage doesn't affect the battery at all. Even if the 'amp' is high,the device will pull only that much of 'amp' that it needs. Rather we should ensure that voltage should not be higher than the rated one for the device.

kyokeun1234 said:
Hm... I'm no expert at this, but maybe JB slowed down the charging amount so GNex doesn't get hot when charging. I found my GNex to charge a bit longer after the update too. But now when I'm using my GNex, it doesn't get as hot as 4.0.x
Click to expand...
Click to collapse
That is quiet possible.

Mine takes like 1hour and a half from nothing to a 100%
Sent from my Galaxy Nexus using xda premium

GldRush98 said:
LOL what? Longer cables in NO WAY effect charging time.
LOL... that's a good one. Also, the Galaxy Nexus charger is rated at 1 amp. You should not use a charger OVER 1 amp or you will damage the phone's charging circuit.
Click to expand...
Click to collapse
A longer and/or thinner cable does have more resistance and so loses a bit of its power (V*A) over the run as waste heat. If it is already at capacity, that loss would slow charging a little bit compared to a shorter cable. If not, then its just wasted energy for heating the cable.
To your second point, any 5volt charger capable of delivering over 1 amp at 5V ( clean DC ) will safely charge a GNexus. Any unnecessary amperage capacity will just not be used. Charger will run cooler.
You could use a 6V auto battery charger with LOTS of amp capacity if it were 5V instead of 6V, and if it were clean DC, but it is not.

Very weird charging issue

Hi, I was hoping you guys could shed some light on my charging issue.
I am having the following issue, either it takes forever to charge like 1% an hour or when the phone actaully does reach 100% and I unplug it, it then drops to 80% right away.
I have tried different chargers, outlets and batteries as well as a factory reset. Nothing works. I tried charging my battery in another GS2 and it charges fine. I have no idea what could be wrong.

Try Wiping your battery stats.

How. I am not rooted.

Also, by doing a factory reset, didnt that wipe the battery stats?

mikea3000 said:
Hi, I was hoping you guys could shed some light on my charging issue.
I am having the following issue, either it takes forever to charge like 1% an hour or when the phone actaully does reach 100% and I unplug it, it then drops to 80% right away.
I have tried different chargers, outlets and batteries as well as a factory reset. Nothing works. I tried charging my battery in another GS2 and it charges fine. I have no idea what could be wrong.
Click to expand...
Click to collapse
Are you using the stock charger? Do you have and radio or antennas on, sync on....
Only thing I can think of is a battery drain problem such as an app on auto sync like Facebook. Turn off all app sync, phone sync, and radios. If that doesn't fix it.....then it's a defective device.....but I suspect a app draining the battery. btw...how long does your battery last?
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™

tjbiker031 said:
Are you using the stock charger?
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™
Click to expand...
Click to collapse
No, I cant find the original one, but I am using a samsung charger with the same 700 ma out. Sometimes I use an htc charger with 1 amp out
Is this ok?

mikea3000 said:
No, I cant find the original one, but I am using a samsung charger with the same 700 ma out. Sometimes I use an htc charger with 1 amp out
Is this ok?
Click to expand...
Click to collapse
What about possible apps draining it with heavy syncing?
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™

tjbiker031 said:
What about possible apps draining it with heavy syncing?
Sent from my SGH-T989 using xda premium, powered by the Venom of the Darkside.™
Click to expand...
Click to collapse
I am only syncing one gmail account, gps bluetooth off and no widgets running. No matter which charger I use or outlet I use, it takes forever to charger. The other weird thing is that it says I am charging via usb when I am really using AC.

Tmogalaxys2 said:
Try Wiping your battery stats.
Click to expand...
Click to collapse
That does nothing, charging to 100percent wipes battery stats all by them self. And it has nothing to do with calibrating.
Is there a reason u haven't rooted? Try stock charger and cable. If not, u got a warranty...

mulletcutter said:
That does nothing, charging to 100percent wipes battery stats all by them self. And it has nothing to do with calibrating.
Is there a reason u haven't rooted? Try stock charger and cable. If not, u got a warranty...
Click to expand...
Click to collapse
I have not rooted because as a casual user, it really serves no purpose for me. I might have to use the warranty, but I was hoping to fix it before going that route.

Have u tried the other s2 battery in yours?

Yes I have. My phone poorly charges the other battery as well

I used to have this issue with cyanogenmod. Even on this phone. Turn your phone off. Fully charge it. Odin back to full stock. Somethings not playing well with your phone. Like I said this used to happen to me ONLY on cyanogenmod ( epic 4g and nexus s ) but never touchwiz.
Sent from my SAMSUNG-SGH-T989 using xda premium

Samsung stock charger is 1A.. 700ma is definitely not enough. the htc charger should have been fine. but our phone doesn't play nice with chargers..it might also be the wire...
Sent from my SGH-T989 using xda app-developers app

According to an article or thread I read here on XDA ( I can't remember I'll try and find it ) our phone recognize the chargers you plug into it. It recognizes Samsung chargers and charges optimally but use any other charger and it will only charge at 500mah even if the charger is rated at 700mah or even 1a. Makes sense because I have 3 chargers. 2 Samsung wall chargers rated at 700mah and an HTC charger rated @1a and the Sammy chargers work much faster. I'll test how long it takes to get from 0% to 100% charge with the Sammy charger then use the HTC one on the next cycle.
Sent from my SAMSUNG-SGH-T989 using xda premium
---------- Post added at 08:33 AM ---------- Previous post was at 08:30 AM ----------
RushAOZ said:
According to an article or thread I read here on XDA ( I can't remember I'll try and find it ) our phone recognize the chargers you plug into it. It recognizes Samsung chargers and charges optimally but use any other charger and it will only charge at 500mah even if the charger is rated at 700mah or even 1a. Makes sense because I have 3 chargers. 2 Samsung wall chargers rated at 700mah and an HTC charger rated @1a and the Sammy chargers work much faster. I'll test how long it takes to get from 0% to 100% charge with the Sammy charger then use the HTC one on the next cycle.
Sent from my SAMSUNG-SGH-T989 using xda premium
Click to expand...
Click to collapse
Here you go:
http://www.androidauthority.com/how-to-fast-charge-samsung-galaxy-phone-using-any-usb-charger-66256/
Basically using a Sammy charger charges at whatever the adapter us rated for but use ANY other charger and the phone defaults to charging at only 350mah. OUCH.
Sent from my SAMSUNG-SGH-T989 using xda premium

[Q] Charging Note2 with the Note1 charger

Hello
My note 2 stock charger got damaged & untill i bring a new one, can i use the note 1 charger? Or it will damage the battery some how?
I want a reasonable answer not like "yes u can"
Thanks for your cooperation
Edit : i googled for an answer but unfortunately i couldn't find any with my search keys...
Sent from my GT-N7100 using Tapatalk 2

I dont have a note 1 and a note 1 charger so I cant really answer.
But i advise you to compare whats written on both chargers. Volt, power all that stuff. If its the same i dont see a problem.
Maybe its not the best advice but I used to charge my LG p990 with a N97 charger and its still fine.
Theres one thing with my note 2 charger.
When I charge it theres a little noise that pisses me off its like ultrasound or something coming from the charger connected on the wall. I usually notice the noise wheb the phone is at 65%.
Charger dead ?
Sent from my GT-N7100 using xda app-developers app

Same here before i damage the charger i heared the noise accidently
The note1 charger output is 5V , 1Am
Can u compare it with yours ?
Thank you btw
Sent from my GT-N7100 using Tapatalk 2

Youre welcome. Can you see it well ?
The app reduces the size lol
Sent from my GT-N7100 using xda app-developers app

Yea thanks its 2Am unlike the note 1 charger which is 1Am
Maybe it will take double time to charge
Sent from my GT-N7100 using Tapatalk 2

If you think it wont harm your phone go for it. I cant tell I'm not an electrician or have the best knowledge in this
Sent from my GT-N7100 using xda app-developers app

You can use it but it well charge slowly. So the usual 2.5 hours to charge week become 4 to 5 hours.

Both chargers are micro usb and is required for them (as a standard) to be 5 volts. So using them to charge ur GN2 is ok.
The current really doesn't matter. It only dictates how fast its gonna be charging your phone. Since the usual GN2 charger uses 2 amps, using the 1 amp GN1 charger would just make your phone charge longer. Anything above 2 amps may be harmful and untested.
I believe they made the GN2 charger 2 amps because it has to make the charging time shorter to compensate for the bigger battery.

DADER said:
Yea thanks its 2Am unlike the note 1 charger which is 1Am
Maybe it will take double time to charge
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
Yup, if those numbers are true then it will take twice as long to charge a note 2 using the note 1 charger. The output voltage must be the same, otherwise bad things may happen. I remember reading somewhere the faster the charging, the quicker the battery life degrades, so the Note 1 charger may actually be better, but I have read so many contradicting articles about Li-Ion Batteries that I don't know what to believe. In any case, you can try. In theory, it's safe, and if really needs a stronger charge, it will either display a message that it needs a different charger or it simply won't charge. It won't blow up or break down, but you shouldn't leave it connected for hours either if you see it doesn't charge.

sandulea said:
Yup, if those numbers are true then it will take twice as long to charge a note 2 using the note 1 charger. The output voltage must be the same, otherwise bad things may happen. I remember reading somewhere the faster the charging, the quicker the battery life degrades, so the Note 1 charger may actually be better, but I have read so many contradicting articles about Li-Ion Batteries that I don't know what to believe. In any case, you can try. In theory, it's safe, and if really needs a stronger charge, it will either display a message that it needs a different charger or it simply won't charge. It won't blow up or break down, but you shouldn't leave it connected for hours either if you see it doesn't charge.
Click to expand...
Click to collapse
Thanks for your respond
Sent from my GT-N7100 using Tapatalk 2

How to show the current / voltage from a phone charger

I know there are some apps in the play store that say they do this but I'm pretty sure most are phone model dependant, and none seem to work with the gs3.
Is there any way I can check what the current or voltage is when I'm charging my phone? I bought a brand new charger recently and notice it does not charge my phone nearly as fast as other ones. And this is a gs3 charger that came from another gs3's box! I have a blackberry charger that charges extremely fast, and the gs3 charger that came with my phone works great as well, but this new one I bought I think is a defect because it will be charging overnight and I'll wakeup without a full charge. Any thoughts?
Sent from my SGH-I747 using xda app-developers app

bdithug said:
I know there are some apps in the play store that say they do this but I'm pretty sure most are phone model dependant, and none seem to work with the gs3.
Is there any way I can check what the current or voltage is when I'm charging my phone? I bought a brand new charger recently and notice it does not charge my phone nearly as fast as other ones. And this is a gs3 charger that came from another gs3's box! I have a blackberry charger that charges extremely fast, and the gs3 charger that came with my phone works great as well, but this new one I bought I think is a defect because it will be charging overnight and I'll wakeup without a full charge. Any thoughts?
Sent from my SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Battery widget monitor pro does a good job, I use it mostly to monitor battery drain but it will show you the voltage input when plugged in. But you probably answered your own question, an it's a bad charger
Sent from my SAMSUNG-SGH-I747 using xda premium

I tried that but I can't seem to find where it tells you the current mA reading from the charger. Mind you I'm looking at the free version not the pro version. Is that feature only available with the pro version?
Battery monitor widget
Sent from my SGH-I747 using xda app-developers app

Stock Nexus 5 Charger Current Output

I wasn't sure whether to post this on the Q&A or in Accessories considering its a topic regarding the charger. If it doesn't belong here then (Mods) please move it.
Anyways, it says on the charger that it outputs 1200mAh to the phone and yet in the CurrentWidget it reads the current output in the range of 30~280mAh but not more than that, this is also backed up by the fact that its taking very long to charge the phone, upto 5hours to complete a charge to 100%. This was not an issue before as it normally use to take apprx 2hours to charge. I've tested a Samsung Galaxy S3 charger, using the Nexus stock cable, which in comparison outputted around 800~1000mAh which seems close to its specs. Any idea if its time to replace the charger or is this normal for you? I've only had the phone for about 2months now.

bushako said:
I wasn't sure whether to post this on the Q&A or in Accessories considering its a topic regarding the charger. If it doesn't belong here then (Mods) please move it.
Anyways, it says on the charger that it outputs 1200mAh to the phone and yet in the CurrentWidget it reads the current output in the range of 30~280mAh but not more than that, this is also backed up by the fact that its taking very long to charge the phone, upto 5hours to complete a charge to 100%. This was not an issue before as it normally use to take apprx 2hours to charge. I've tested a Samsung Galaxy S3 charger, using the Nexus stock cable, which in comparison outputted around 800~1000mAh which seems close to its specs. Any idea if its time to replace the charger or is this normal for you? I've only had the phone for about 2months now.
Click to expand...
Click to collapse
Replace it, the stock gives me about 800-1000mAh as well. The Nexus 7 charger gives me the same. Don't know if it's the wire or not, but sounds like your charger is starting to crap out.

bushako said:
I wasn't sure whether to post this on the Q&A or in Accessories considering its a topic regarding the charger. If it doesn't belong here then (Mods) please move it.
Anyways, it says on the charger that it outputs 1200mAh to the phone and yet in the CurrentWidget it reads the current output in the range of 30~280mAh but not more than that, this is also backed up by the fact that its taking very long to charge the phone, upto 5hours to complete a charge to 100%. This was not an issue before as it normally use to take apprx 2hours to charge. I've tested a Samsung Galaxy S3 charger, using the Nexus stock cable, which in comparison outputted around 800~1000mAh which seems close to its specs. Any idea if its time to replace the charger or is this normal for you? I've only had the phone for about 2months now.
Click to expand...
Click to collapse
My phone charges for about 1,5 hours. Are you charging via USB?

Ubichinon said:
My phone charges for about 1,5 hours. Are you charging via USB?
Click to expand...
Click to collapse
No im using the adaptor that came with the phone.
xdviper said:
Replace it, the stock gives me about 800-1000mAh as well. The Nexus 7 charger gives me the same. Don't know if it's the wire or not, but sounds like your charger is starting to crap out.
Click to expand...
Click to collapse
But that really sucks coz its not even that old. What a way for LG to cut corners with low quality charger. This never happened with me before.

Is the phone being used at all during charging?
And was the measured output consistently that low?
Sent from my Nexus 5 using Tapatalk

Native89 said:
Is the phone being used at all during charging?
And was the measured output consistently that low?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I used it briefly while charging with only Battery Monitor Widget open to monitor the situation. Then I put it to sleep and let it charge. The current was consistently within the low range. I've checked battery health, capacity and voltage and its in good working capacity.
Either way there's not much I can do with a charger other than to replace it. Any suggestions?