Develop Bugs

Charging super fast

Is it normal for the charge to charge up extremely fast. I'm using Francos kernel 11 on gummy rom.
I just bought this phone and noticing it charges 10 times faster than my nexus s? Is this normal. I wiped my battery stats already
Sent from my Galaxy Nexus using xda premium

As it seems Samsung delivered a stronger power supply with the gnex.
Sent from my Galaxy Nexus using xda premium

Thanks didn't know if it was normal or not. It charges without exaggeration at least 10 times faster. That's good to know I no longer have to wait for 5 hours for a full charge
Sent from my Galaxy Nexus using xda premium

Since I had the sgs2 beforehand I tested both power supplies from 25% battery and the gnex power supply was definitely faster. Hope that proves my point tough I dont know the timings anymore
Sent from my Galaxy Nexus using xda premium

Fastest charging android I've owned...

Yeah. I've noticed it too. For empty to full in less than one hour!
Sent from my Galaxy Nexus using xda premium

AfroCreame said:
Fastest charging android I've owned...
Click to expand...
Click to collapse
Yeah I def agree with that. Love it
Sent from my Galaxy Nexus using Tapatalk

Those with a Verizon Galaxy Nexus, can you look at your charger and see what the output is?
Some of us GSM users got some generic Samsung one, so might not be optimized for the Galaxy Nexus.
So is it 5V, 2.1Amps or what? I've been using my iPad2/Touchpad/Transformer charger with my GSM version and it charges super fast cuz of the high amps.

It charges much quicker that my Galaxy S with a bigger battery on the same charger (the one from the Galaxy S, 700mA). Seems they made charging much more efficient in the Galaxy Nexus.

nxt said:
Those with a Verizon Galaxy Nexus, can you look at your charger and see what the output is?
Some of us GSM users got some generic Samsung one, so might not be optimized for the Galaxy Nexus.
So is it 5V, 2.1Amps or what? I've been using my iPad2/Touchpad/Transformer charger with my GSM version and it charges super fast cuz of the high amps.
Click to expand...
Click to collapse
5v 1A is the one that i got with my verizon nexus.

profundus-sanus said:
5v 1A is the one that i got with my verizon nexus.
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Click to collapse
Yeah me too. This is a very fast charger. I couldn't believe it at first.
Sent from my Galaxy Nexus using xda premium

I don't think a bigger amp charger charges faster. I think the nexus is limited to 1A. I've tried a bc 1.1 compliant usb hub which allows charging of one device at 1.5a and I noticed no difference mentioning. But yeah, using a 1amp charger charges nexus ridiculously fast.
Sent from my Nexus in Texas.

Ohh.. so I am not the only one then?

5v 1a here in the UK for my GN. it's probably the fastest charging phone I've ever owned..
Sent from my Galaxy Nexus using Tapatalk

nxt said:
Those with a Verizon Galaxy Nexus, can you look at your charger and see what the output is?
Some of us GSM users got some generic Samsung one, so might not be optimized for the Galaxy Nexus.
So is it 5V, 2.1Amps or what? I've been using my iPad2/Touchpad/Transformer charger with my GSM version and it charges super fast cuz of the high amps.
Click to expand...
Click to collapse
Its definitely not samsungs. At least I don't think so because its kind of fancy looking compared to my vibrant, tab,nexus s look. Its also really tiny I mean extremely small just big enough to have prongs
Sent from my Galaxy Nexus using xda premium

I think the fast charge is better on the battery. You don't get as full but it prolongs the battery. I read that hear some where
Sent from my Galaxy Nexus using xda premium

5V 1A is the standard for US wall chargers. My HTC ones, Belkin & Kingston ones are all that way also.
[EDIT] i actually just went through my box of cables/chargers and even found a Griffin one that's 5.2V 1A. i should be using this one

I installed Battery Monitor (a few bucks on the market), among many features, it shows the actual charging and discharging rate. On average my GNex charges at 1200+ mA per hour without use and discharges on idle between 2mA-350mA per hour screen off depending on background processes. I have the 2100 mA battery and average 2hrs for 15%+- to 100%. The stock charger is definitely fast with an exceptional charge rate averaging well over 1Amp per hour when uninterrupted.
**Edit: when charging & using the device I average 650 mA charge rate. Still respectable.
Sent from:
Galaxy Nexus w/Rootzboat
using XDA Premium

My GSM one charges full in at least an hour or two. And NEVER FREAKING DIES. This is the first phone ever that i can charge fully and let it go a full day into the next day and i know it will still be alive. I remember i let it stay alive for two days straight. only reason why it only lasted only 1 day, 2hs and 35mins this time was because i flashed a different rom. Only had the phone for a full week including today. Been reading alot about this franco dev. Does every rom currently use his kernel? Just flashed gummynex and i don't know if its running his kernel or not. A little off topic i know but its still pertaining to battery

Aerocaptain said:
I installed Battery Monitor (a few bucks on the market), among many features, it shows the actual charging and discharging rate. On average my GNex charges at 1200+ mA per hour without use and discharges on idle between 2mA-350mA per hour screen off depending on background processes. I have the 2100 mA battery and average 2hrs for 15%+- to 100%. The stock charger is definitely fast with an exceptional charge rate averaging well over 1Amp per hour when uninterrupted.
**Edit: when charging & using the device I average 650 mA charge rate. Still respectable.
Sent from:
Galaxy Nexus w/Rootzboat
using XDA Premium
Click to expand...
Click to collapse
You do know that the nexus doesn't have a chip capable of reading or outputting current? So anything software tells you is a guess.
Sent from my Nexus in Texas.

[Q] Can different chargers mess with your battery?

So i recently busted my default charger and started using one i bought, its not samsung brand, but lately i've been noticing that my battery dies quicker, does this seem look like normal battery life or is it possible that having a different type of charger is screwing with my battery? All i use my phone for is texting/phone calls. Thanks in advance

What are the power output on the charger? It seems that it drops really fast even during standby. The charger that came with the nexus is rated at 5v @ 1a.

SnackAttackk said:
So i recently busted my default charger and started using one i bought, its not samsung brand, but lately i've been noticing that my battery dies quicker, does this seem look like normal battery life or is it possible that having a different type of charger is screwing with my battery? All i use my phone for is texting/phone calls. Thanks in advance
Click to expand...
Click to collapse
Have you checked BetterBatteryStats? Looks like that phone is almost always awake, except during one period where the battery had less of a downslope. Also, it looks like even during the downslopes your phone is charging. Something doesn't seem right here, and I doubt it's your charger. It looks more like some application or other software is eating your battery for breakfast.

Yeah i also forgot to say, sometimes i'd look at my phone while in out and it would randomly say its charging. When its obviously not. The brand of the charger is called "On the go", no idea what kind of charge it delivers.

SnackAttackk said:
Yeah i also forgot to say, sometimes i'd look at my phone while in out and it would randomly say its charging. When its obviously not. The brand of the charger is called "On the go", no idea what kind of charge it delivers.
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Click to collapse
Are you on stock or have you tried flashing back to stock? If the problem continues even with a clean install of the stock software, it seems like the USB charging board might be messed up and may need replacing.

biscuitownz said:
What are the power output on the charger? It seems that it drops really fast even during standby. The charger that came with the nexus is rated at 5v @ 1a.
Click to expand...
Click to collapse
I've always wondered about this too. I seem to have a range of chargers that are micro USB that are 5v but < 1a. Is it safe to use these or not?

Yes i flashed it and am on a rooted version.

JaiaV said:
If the problem continues even with a clean install of the stock software, it seems like the USB charging board might be messed up and may need replacing.
Click to expand...
Click to collapse
^^^^^^^

Alright i'll look into that, thanks guys

I'm Curious About This Too
I've been using the power block from my old Motorola OG Droid, with an output of 5.1V - 850mA, along with the usb cable that came with my old Palm Pre Plus (its nearly 52" long, almost 4 1/2ft!) andi have no idea what that's rated for. I seem to be doing fine as far as I can tell. It charges quickly on AC, nothing overheats.
But what are the consequences of using a power source with this kind of difference, if any? Consequences to using a power source with a greater difference?

neccoguy21 said:
I've been using the power block from my old Motorola OG Droid, with an output of 5.1V - 850mA, along with the usb cable that came with my old Palm Pre Plus (its nearly 52" long, almost 4 1/2ft!) andi have no idea what that's rated for. I seem to be doing fine as far as I can tell. It charges quickly on AC, nothing overheats.
But what are the consequences of using a power source with this kind of difference, if any? Consequences to using a power source with a greater difference?
Click to expand...
Click to collapse
Not saying it works but my friends phone was doing same phone kept saying it was still charging and screen wouldn't sleep , are u using a live wallpaper ? If u are try getting something non live and see if that helps . His phone since has stopped showing the charging icon and screen wake has reduced dramatically
Sent from my Galaxy Nexus using xda premium

benpfeil said:
I've always wondered about this too. I seem to have a range of chargers that are micro USB that are 5v but < 1a. Is it safe to use these or not?
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Click to collapse
Yes, the "a" (amperage) doesn't matter. It's just telling you how fast it can charge your phone, higher the amperage is, the faster it'll charge.
You can also determine how many watts the charger will consume by multiplying the Voltage by Amps. So if your charger was rated at 5v @ 1.5a, it will use about 7.5 watts. If it's less than 1a, like .6a, just put a decimal before the number.

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.™
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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?
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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.™
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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
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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

Been having bad battery life? It might be your charger and not your phone

This isn't my app, but I wanted to give fellow T989 users a heads-up on it:
http://forum.xda-developers.com/showthread.php?t=1801608
Apparently, our phones don't get along well with certain 3rd party chargers, and if you use one, it'll wakelock your phone until you reboot. For those of you who don't know what a wakelock is, the short version is it prevents your phone from deep sleeping, screwing your battery life.
I'd been using an old Blackberry charger with my phone, and using the linked app, tested it and discovered it was causing this problem. After switching to a different charger, I get much better battery life now.
I highly recommend anyone not using the original charger to test their charger and make sure it's not ruining your battery life.

manekineko said:
This isn't my app, but I wanted to give fellow T989 users a heads-up on it:
http://forum.xda-developers.com/showthread.php?t=1801608
Apparently, our phones don't get along well with certain 3rd party chargers, and if you use one, it'll wakelock your phone until you reboot. For those of you who don't know what a wakelock is, the short version is it prevents your phone from deep sleeping, screwing your battery life.
I'd been using an old Blackberry charger with my phone, and using the linked app, tested it and discovered it was causing this problem. After switching to a different charger, I get much better battery life now.
I highly recommend anyone not using the original charger to test their charger and make sure it's not ruining your battery life.
Click to expand...
Click to collapse
Thanks for the heads up. This makes perfect sense.
Sent from my SGH-T989 using xda app-developers app

manekineko said:
This isn't my app, but I wanted to give fellow T989 users a heads-up on it:
http://forum.xda-developers.com/showthread.php?t=1801608
Apparently, our phones don't get along well with certain 3rd party chargers, and if you use one, it'll wakelock your phone until you reboot. For those of you who don't know what a wakelock is, the short version is it prevents your phone from deep sleeping, screwing your battery life.
I'd been using an old Blackberry charger with my phone, and using the linked app, tested it and discovered it was causing this problem. After switching to a different charger, I get much better battery life now.
I highly recommend anyone not using the original charger to test their charger and make sure it's not ruining your battery life.
Click to expand...
Click to collapse
The phone can detect when you're using ANY charger but the original Sammy charger. There are 2 switched pins on the charger that detect this. When the phone detects an incompatible charger it only chargers at 350mah. When using the normal charger it charges at a full 700mah or whatever the charger pushes to the phone.
Sent from my SGH-T989 using xda premium

RushAOZ said:
The phone can detect when you're using ANY charger but the original Sammy charger. There are 2 switched pins on the charger that detect this. When the phone detects an incompatible charger it only chargers at 350mah. When using the normal charger it charges at a full 700mah or whatever the charger pushes to the phone.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
If i was to replace just the USB cord that came with the phone with a generic one, would this cause the charger to only charge at 350mah?

RushAOZ said:
The phone can detect when you're using ANY charger but the original Sammy charger. There are 2 switched pins on the charger that detect this. When the phone detects an incompatible charger it only chargers at 350mah. When using the normal charger it charges at a full 700mah or whatever the charger pushes to the phone.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
When I plugged it in to the Sammy charger it said fast charge, at 905mah
Sent from my SGH-T989 using xda premium

rahilkalim said:
If i was to replace just the USB cord that came with the phone with a generic one, would this cause the charger to only charge at 350mah?
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Click to collapse
Nah the cable doesn't matter. Just the charger. And loopdogg I bet! My phone goes from dead to a full charge while on in about 3 hours. Love it!
Sent from my SGH-T989 using xda premium

RushAOZ said:
Nah the cable doesn't matter. Just the charger. And loopdogg I bet! My phone goes from dead to a full charge while on in about 3 hours. Love it!
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Makes sense. Thanks for the update.

RushAOZ said:
The phone can detect when you're using ANY charger but the original Sammy charger. There are 2 switched pins on the charger that detect this. When the phone detects an incompatible charger it only chargers at 350mah. When using the normal charger it charges at a full 700mah or whatever the charger pushes to the phone.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Actually, I have a number of chargers that work to fast charge and work properly. Tested them with the app I linked and they come out without issue.
These include the charger that came with my Pantech Element tablet, charger from a Palm Pre, and charger from my old HTC Touch Pro 2.
They all charge at 900ma+ and don't cause wakelocks.

manekineko said:
Actually, I have a number of chargers that work to fast charge and work properly. Tested them with the app I linked and they come out without issue.
These include the charger that came with my Pantech Element tablet, charger from a Palm Pre, and charger from my old HTC Touch Pro 2.
They all charge at 900ma+ and don't cause wakelocks.
Click to expand...
Click to collapse
Sorry, but that's a flat out fib. This subject has already been fully established and spoken about. Look it up. Even TheDerekJay himself has spoken and elaborated on this with his development findings on this phone.
I also have numerous chargers. 2 700mah Sammy chargers, an HTC my touch 4g charger, iPhone 1000mah charger, and Evo 3d charger.. safe to say none of them charge nearly as fast as the Sammy chargers. Approximately 3 hours from 0% to a full charge. Around 5-6 hours with the others.
Sent from my SAMSUNG-SGH-T989 using xda premium

I was testing with differents chargers and cables and there is a lot of changes about both. The cable make a big job. Using the same charger and two diferent cables with one i get wakelocks 301mA and with the other one I get fast charging at 895 mA.
Sent from my SGH-T989 using xda premium

I'm using the Samsung charger that came with and the app says charger wake lock charging at 506 ma
Sent from my SGH-T989D 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?