Database Users

Why does this charge so SLOW?

I am completely satisfied with my nexus 7 but it seems to be charging ridiculously slow. So slowly that even browsing with my screen on low, my battery still goes down while its plugged in. And a 1 hour charge with my nexus off only charges it like 20 percent or less while my samsung galaxy player charges 65 percent. I have tried 2 different USB cables and chargers.
Sent from my Nexus 7 using xda app-developers app

Oops I should have put this in q&a! My bad!
Sent from my Nexus 7 using xda app-developers app

Only use genuine charger which came with .
Other phone chargers will not work.
Sent from my Optimus 2X using Tapatalk 2

considering theres much less voltage going through when using the usb(not wall charger) to charge, its normal for it to charge slow. and normal for it to lose battery % while charging it via usb and using the device.

simms22 said:
considering theres much less voltage going through when using the usb(not wall charger) to charge, its normal for it to charge slow. and normal for it to lose battery % while charging it via usb and using the device.
Click to expand...
Click to collapse
Yep.
USB 5v @ 500ma
Phone charger 5v @750-1000ma
Nexus charger [email protected]
Ipad charger [email protected]
Im sure you can see why a phone charger won't do the job
Sent from my Optimus 2X using Tapatalk 2

Even using the charger that came with it, it still takes a good three or four hours to fully charge it.

brando56894 said:
Even using the charger that came with it, it still takes a good three or four hours to fully charge it.
Click to expand...
Click to collapse
A suburban fills up much slower than a Harley.
Sent from my paranoid Nexus 7.

Its a 4000mah battery. Its gonna take a little time to fully charge.
Sent from my Nexus 7 using xda premium

I live in Singapore, can't find a proper 3 pin wall charger for the nexus7..
Sent from my Nexus 7 using Tapatalk 2

Get a HP touchpad international charge kit from Amazon one of the members recommended it to me, it charges in about 2hr 45 minutes full charge faster than the official Charger. Make sure u turn off or nexus to charge the battery faster

nexusboy01 said:
Get a HP touchpad international charge kit from Amazon one of the members recommended it to me, it charges in about 2hr 45 minutes full charge faster than the official Charger. Make sure u turn off or nexus to charge the battery faster
Click to expand...
Click to collapse
I vouch for this. I use my Touchpad charger and it charges to full from almost 10 percent to full in less than 3 hours.
Sent from my Nexus 7 using Tapatalk 2
---------- Post added at 08:07 PM ---------- Previous post was at 08:06 PM ----------
SPreston2001 said:
Its a 4000mah battery. Its gonna take a little time to fully charge.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Correct, the bigger the battery the longer the charging time.
Sent from my Nexus 7 using Tapatalk 2

nexusboy01 said:
Get a HP touchpad international charge kit from Amazon one of the members recommended it to me, it charges in about 2hr 45 minutes full charge faster than the official Charger. Make sure u turn off or nexus to charge the battery faster
Click to expand...
Click to collapse
Be careful as the faster a battery charges the hotter it gets and the hotter it gets the faster it's performance and life decrease (all batteries life and charge levels will slowly decrease over time and after soo many charge cycles as parts of it very slowly kinda burn out and are unusable). Also why even fast chargers SHOULD slow down when you hit roughly 90 - 95% as it is not good to cram power that fast in to lithium ion when close to full as this causes the loss of parts of the battery more quickly. Usually it can be apps that can slow things down as well. like my boss kept complaining his phone are 3 batteries a day until a week later I convinced him to get rid of unneeded apps and low and behold it came right back. This is due to apps requesting what's called a wake lock basically telling the device to not go to sleep. This is needed to do syncs, scans and the like, but poorly written apps can juggle wake lock poorly causing bad battery usage when they don't need to.
My tablet charges in roughly 2.5 hours from dead to full using stock charger which is GREAT for a 4000 maH battery.
I also highly recommend turning the OS off and charging via charge only screen (where you see only battery graphic filling up) that would not involve any apps messing with the device while charging.
Also not good to leave device on charger longer than roughly 30 min past full as this could then have charger throttle between fast and slow charge over time (usually due to imperceptible power fluctuations tricking the circuits in the charger to reset and it takes it a sec to realize the battery charge level and adjust back) while battery is full which is very bad to have it in fast charge when it's full as stated (the charger not talking of what some folks call a fast charge mode on some devices (usually used in some way to speed up charging when using a computer USB port)) and is why even manufacturers will warn you if this sort of thing (that is if you read caution statements or manuals)
Sent from my Nexus 7 using Xparent Green Tapatalk 2
---------- Post added at 08:35 PM ---------- Previous post was at 08:16 PM ----------
simms22 said:
considering theres much less voltage going through when using the usb(not wall charger) to charge, its normal for it to charge slow. and normal for it to lose battery % while charging it via usb and using the device.
Click to expand...
Click to collapse
Very true depends on how hard you are running the device. Streaming movies in this mode most likely you will see a loss while simply checking news feeds or light internet browsing it still gains percentage.
Sent from my Nexus 7 using Xparent Green Tapatalk 2
---------- Post added at 08:49 PM ---------- Previous post was at 08:35 PM ----------
ahmadmfz said:
I live in Singapore, can't find a proper 3 pin wall charger for the nexus7..
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
You mean like this one? I know it's not from Google but is specific to nexus 7 and Kensington usually makes good chargers:
http://www.daydeal.com/product.php?productid=19029
Search for nexus 7 international charger
Sent from my Nexus 7 using Xparent Green Tapatalk 2

Some computer motherboards also offer a high-power mode for USB ports, specifically for charging handheld devices. For instance, here's ASRock's solution.

happyjack96 said:
I am completely satisfied with my nexus 7 but it seems to be charging ridiculously slow. So slowly that even browsing with my screen on low, my battery still goes down while its plugged in. And a 1 hour charge with my nexus off only charges it like 20 percent or less while my samsung galaxy player charges 65 percent. I have tried 2 different USB cables and chargers.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
I think it charges normally. I come from an iPad 3, which take 6.5hours hours to charge from 0 to 100%. I'm satisfied with 3.5 hours with the N7.
Sent from my Nexus 7 using Tapatalk 2

My Nexus 7 charges from dead to 100% in about 3 hours. That's not slow at all.

Galaxy Charging Current: Check if your device is charging correctly

Galaxy Charging Current:
* Please do not re-upload the apk. Link to this thread instead. *
I've made a simple app that displays the three values related to the charging current that are provided by Samsung:
current_now: I think this *always* shows 999 on AC and 466 on USB.
current_avg: Not sure about this one... Usually is the same as current_max (at least after some seconds)
current_max: This is the most important one, since it defines the maximum charging current. In other others, the phone will not get more current to charge the battery than the value displayed here. For example, on an S3, if this shows anything much less 1000, the device is charging slower than it should/could.
The app also comes with a simple (and ugly :cyclops widget that shows the current_max, so that we can easily check weather the device is charging at the optimal current (1000mA on the S3) or not.
If you find the application useful and want to contribute please buy the Pro version from Google Play.
The Pro version also has some extra features like auto-refresh and an optional dark theme.
Pro version on Google Play: Galaxy Charging Current Pro
Lite version on Google Play: Galaxy Charging Current Lite
The application is compatible with non-US versions of the Samsung Galaxy S3 and Galaxy Note 2.
It was not tested on the Galaxy S4 yet. If you have a Galaxy S4 please report if the application works.
Background (why I made this app and why you should check it):
I've started to notice that when I use a USB extension to charge the SGS3 it charges *really* slowly.
This only happens sometimes and the problem does not happen in other smartphones I've used. Also, it's not a cable fault, since I've tested more than one cable.
After some "research" I've found that the file /sys/class/power_supply/battery/current_max does not show 1000 (1A) when using the extension. Instead it shows much lower values like 200, 300 and, sometimes, 600. Even when using only the stock cable *sometimes* it shows 900 or much lower values like 600 (when it should show 1000), thus charging slower. Disconnecting the cable and reconnecting usually updates the value to 1000.
It seems that the current_max file shows the current limit at which the phone is charging, and if it is charging at less than 1000mA, it is charging slower that it should/can, since the stock charger has an output of 1000mA.
Does anyone know why this happens? I *think* that the battery/charging driver does some checks when the cable is connect to find the maximum safe current and, due to signal noise that occurs when the cable is being connected, it sets a lower maximum value. If this is the case, the driver should periodically repeat the test to update the max charging current.
By the way, I've seen this behavior on rooted stock 4.1.1 and also 4.1.2.
If you think this post is useful or helped you in any way, please press the "THANKS" button. Thanks.
XDA:DevDB Information
Galaxy Charging Current, App for the Android General
Contributors
abmantis, abmantis
Version Information
Status: Stable
Created 2015-03-10
Last Updated 2015-03-10

+1
But it happens to me when using the wall charger. No problems with USB charging. Haven't checked the file mentioned in the first post for the charging values, but the slow charging problem exists exactly as mentioned in the OP. Again, disconnecting and re-connecting the cable solves the issue.
Happens with all ROMs and kernels.
Using the original Samsung cable and charger. Don't have any other cable.
Sent from my GT-I9300 using xda app-developers app

Oomahey said:
+1
But it happens to me when using the wall charger. No problems with USB charging. Haven't checked the file mentioned in the first post for the charging values, but the slow charging problem exists exactly as mentioned in the OP. Again, disconnecting and re-connecting the cable solves the issue.
Happens with all ROMs and kernels.
Using the original Samsung cable and charger. Don't have any other cable.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
EDIT: Removed to prevent confusion.

DeadVirus said:
If you are rooted, please check that file when the phone is charging slowly. Using Terminal Emulator, type:
Code:
cat /sys/class/power_supply/battery/current_max
Click to expand...
Click to collapse
Yes, I am rooted. I don't have the issue right now but checked the file nonetheless. The file shows 900mA. Will check again when I have the issue and report here.
Sent from my GT-I9300 using xda app-developers app

Oomahey said:
Yes, I am rooted. I don't have the issue right now but checked the file nonetheless. The file shows 900mA. Will check again when I have the issue and report here.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Try to remove and replug the cable, it should then show 1000.

WARNING!!!!!
Please stay away from the stock sgs3 wall power adapter as it is known to wreck usb cables that are being used with it.
Check this thread for proof.
http://forum.xda-developers.com/showthread.php?t=2073429
have a nice day! :fingers-crossed:

Plug in the charger, view the current_max = 1000
Current now 999
Average 1000
Sent from my GT-I9300 using Tapatalk 2

It would be nice if more people checked this behavior so that we could find why it happens.
To make things easier, I've attached a simple app (with widget) in the first post that displays the charging current values, so that everyone can check if the device is charging at full current.

The faster your battery charges, the faster it wears.
I set the current to the minimum using STweaks and Siyah Kernel.
Also I don't know what is your problem and why you are in a hurry to charge your batteries with the maximum current supported by the charger? That's nonsense.

celeronix said:
The faster your battery charges, the faster it wears.
I set the current to the minimum using STweaks and Siyah Kernel.
Also I don't know what is your problem and why you are in a hurry to charge your batteries with the maximum current supported by the charger? That's nonsense.
Click to expand...
Click to collapse
Well, first because when I use a USB extension the current is so low that it charges like 10% in 8 hours (once again, this does not happen in another HTC smartphone, with the same charger+extensions).
Second, because even when using the stock cable I don't like to wait 4 hours to be able pick the phone and go out (usually it takes only 2 and a half hours, but sometimes....).
Understand that each person has different habits and needs. Maybe for you it is nonsense that a person wants the phone charged fast, but for me it is nonsense that you want your phone to charge slowly. Right, if I'm spending a whole day at the desk I don't mind the phone taking the whole day to charge, but that is not always the case.

I've updated the first post with a new version of the current check app that fixes the widget not updating bug (for those who like to use the widget).

I've got an old Samsung wall charger (think from my Omnia HD days) with an output of 0.7A. That charges mine in about 2.5hrs from dead. Only use that coz I've noticed that charging from USB is majorly slow

Re: Check if your device is charging at the maximum current
Interesting thread.. Thanks for this. I've checked it out and my current_max is 1000.
<sent from my Nexus 4>

Coreym said:
Interesting thread.. Thanks for this. I've checked it out and my current_max is 1000.
<sent from my Nexus 4>
Click to expand...
Click to collapse
Your welcome. I just hope we could find the reason for this problem.
If you don't mind, please keep checking the current_max periodically to see if your device always charges at 1000.

DeadVirus said:
Your welcome. I just hope we could find the reason for this problem.
If you don't mind, please keep checking the current_max periodically to see if your device always charges at 1000.
Click to expand...
Click to collapse
I always check your app as soon as I connect my phone to the charger. I ensure that the current_max is at 1000 before leaving the phone alone to charge in peace.
I usually wake up with just enough time to fully charge the phone before leaving for work. So, your app is a God-send. :good:

Does this apply for USB charging too??
The optimal USB charging value in my phone was 450..
I changed it to 700..
I see a little difference in the rate of charging..
has it something to do with it??
sorry.. noob here.. and i need info..

DeadVirus said:
Your welcome. I just hope we could find the reason for this problem.
If you don't mind, please keep checking the current_max periodically to see if your device always charges at 1000.
Click to expand...
Click to collapse
For me using the stock plug and cable I was jumping around between 460 and 900, using the stock charger and alternate cable I was contantly at 460 using the stock cable and alternate plug I was at 900, using alternate cable and plug I was at 1000.
If you aren't charging at 1000mA try changing the plug and cable that's where my problem was.

Oomahey said:
I always check your app as soon as I connect my phone to the charger. I ensure that the current_max is at 1000 before leaving the phone alone to charge in peace.
I usually wake up with just enough time to fully charge the phone before leaving for work. So, your app is a God-send. :good:
Click to expand...
Click to collapse
Does it always shows 1000? Or does it sometimes shows less than 1000?
By the way, sometimes it shows 1000 when I connect the charger but after some time, like 5 minutes, the value decreases.
supreethms said:
Does this apply for USB charging too??
The optimal USB charging value in my phone was 450..
I changed it to 700..
I see a little difference in the rate of charging..
has it something to do with it??
sorry.. noob here.. and i need info..
Click to expand...
Click to collapse
Yes, you can check the charge current both in AC and USB. Connect the cable and check the current_max value (or use the widget), and see if it is set to something near 700.
How did you set it to 700 on USB? Using a custom ROM?
delsus said:
For me using the stock plug and cable I was jumping around between 460 and 900, using the stock charger and alternate cable I was contantly at 460 using the stock cable and alternate plug I was at 900, using alternate cable and plug I was at 1000.
If you aren't charging at 1000mA try changing the plug and cable that's where my problem was.
Click to expand...
Click to collapse
Interesting! So, the problem is the default charger?
I will try that when I get my hands on another charger

DeadVirus said:
Interesting! So, the problem is the default charger?
I will try that when I get my hands on another charger
Click to expand...
Click to collapse
From what I have seen it is, this was also on stock unrooted ELLA, so it's nothing with custom roms.

cool little app

[SOLUTION] Slow Charging!

★★★This topic is for them who are having problems with stock charger and cable. If you don't have any problems, ignore this ★★★
Well, since I purchased my Note 2, I kept facing this slow charging problem. Now what is slow charging some of you will ask? Well, it's simple. The device is taking more than normal time for charging. Now how do you know the default/should be rate for charging? Simple again. The AC adapter clearly says output rate as 2000 mA or 2.0 A. So with that calculation Note 2's monstrous 3100 mAh should be fully charged with 2 hours. But as we've seen steady 2.0A is not the output case in some/many scenario, so add another 30 mins to it. So whatever it is, from 0-100%, the device shouldn't take more than 2 hours 30 minutes.
And for me, it was taking around 5 hours! Sometimes 4 hours 30 minutes, and if it's very fast then 4 hours. Well I was never gonna wait 4 damn hours before going to my office and irritate myself, and I don't have the habit of charging overnight, unless I absolutely need it.
So I kept calling my retailer, asked for replacement, and they did, well, you won't believe, they replaced three times actually, so I had three different Note 2, with three different charger. Well, each of them acted absolutely fine at first 3-4 charge, then the problem was back again and again. I in fact turned off the device and put it into trash once.
Then I thought let's try some different USB cables, I tried my friend's Galaxy Ace cable. Charging current kept fluctuating between 1000-1200 mA. Which was better than those faulty stock cables, which provided steady 900 mA. Sometimes it even was detecting the AC current as USB, which would provide a mere 460 mA and would take God knows how long! Then I found my piece. I went to my retailer, frustrated and angry, asked them to give me the thickest and shortest possible cable, and they provide me one from a Samsung phone's box, but I can't recall which device was that! And then I sat there for half an hour, kept plugging and unplugging, and the current rate was rock steady at 1800 mA. I took it, paid just 10$ and came back.
Since then I have charged my phone almost 10 times and the current rate never went below 1800 mA / 1.8 A.
This is the cable I am using, do notice that it has 5 pin set up against stock cable's 4 pi, if that matters in any way, and it's about 10% thicker than the stock cable and also about 9" shorter.
And how will you monitor the charging current, three ways are there,
1- Battery Monitor (yet I don't know how to exactly use it)
2- If you are rooted (which is a must anyway), then just go to, /sys/class/power_supply/battery/current_avg
3- Use the app from the link below. It basically reads the current value just exactly as above but it saves the time to go into that file every time. A big thanks to Deadvirus.
Galaxy Charging Current application's apk can be found here:
http://forum.xda-developers.com/showpost.php?p=36124435)?
Play Store link: (Paid)
https://play.google.com/store/apps/...S5hYm1hbnRpcy5nYWxheHljaGFyZ2luZ2N1cnJlbnQiXQ..
Thanks to this post and it's poster for informing us about the current output reading path,
http://forum.xda-developers.com/showpost.php?p=33585646&postcount=31

The included cable charger that mine came with charges fast like that, I let it charge slow with standard USB port overnight, but the included charger nd included cable should achieve this. The cable is important.

kebabs said:
The included cable charger that mine came with charges fast like that, I let it charge slow with standard USB port overnight, but the included charger nd included cable should achieve this. The cable is important.
Click to expand...
Click to collapse
Same here, it's done within about 2 hours every time, from ~1%. Something definitely must have gone wrong with yours :s

R: [SOLUTION] Slow Charging!
You are amazingly right. Every charger/cable combo I test seems to deliver different currents, according to the app you posted, ranging from 600 to 1300 (mA?).
Didn't know that could happen. Now I am looking for the Holy Grail of chargers, too.
After some tests: original chargers of Note 2 and Tab provide 1800 mA; no-brand Chinese labeled 1500 gives 1400; one Nokia labeled 1200 gives 1300, another, labeled 1200, gives 1200. Puro brand, labeled 2100, gives 1100. Another Chinese, no-brand, labeled 2000, double usb, gives 1100 per socket. Other no-brand samples give 600 or 300 mA.
Enormous variability.
Think I'll use the 1800 mA Samsung for when I'm out, and the good Nokia's for overnight charging when home.
Sent from my GT-N7100 using xda premium

And I ve been wondering why the heck original cable is too short. I thought samsung were just tight gits. Cable is mot even long enough to reach feom the wall to bed side table
Sent from my GT-N7100 using xda app-developers app

no problem whatsoever with mine , charging from 1 to 100 % in about 2 - 2:10 hours

Thank you for nice explanation! Now it's much clearer.
For me...
Stock charger + stock short cable (0,9 m) = ~2+ hours
Stock charger + some other cable (1,8 m) = ~4+ hours
,don't know about thicknes. Mb stock cable is thicker, or at least harder to bend.
Sent from my GT-N7100

Thanks for the APK, I found a huge variance in charging rates based on a combination of chargers and cables. Goes to show that the cable makes a huge difference. Here's my findings:
** Stock Charger (2A):
w/Stock Cable (4-pin) - 1698
w/Cable from another phone (5-pin) - 1698
w/Cable from battery pack (5-pin)- 1698
w/generic eBay cable (4-pin)- 100! - It didn't charge at all, even with screen off.
** iPhone Charger (1A):
w/Stock Cable (4-pin) - 1300
w/Cable from another phone (5-pin) - 1100
w/Cable from battery pack (5-pin) - 1300
w/generic eBay cable (4-pin) - 100!
** Car Charger (1A):
w/another generic eBay cable - 490
(Was running Redpill kernel, not sure if that has fast charging built in which might affect results).

The app is really helpful. Been wondering what the charging current was on different chargers.
I measured it using the app based on current AVG and not current NOW. This is because I used a 800ma blackberry charger and yet current now shows 1698 which is impossible.
The app will tell you which cables and chargers are good. I was shocked that out of my 8 cables only 3 gave an average of more than 1000, the rest give around 800 or less.
Sent from my GT-N7100 using Tapatalk 2

Hi!
So, the AC adaptater mentionne 2A but it doesn't mean that your devuce consume 2A... It means that the AC adaptater can provide 2A under 5V.
If a load need to consume 500mA the adaptater can provide enough power. But if it needs more than 2A, the ouput current will be at the 2A max but your voltage will decrease (it means that you have a device problem!).
The only thing to do is to refer to the user manual of device.
One thing more, the USB protocole fix the maximun current to 1A!
An other thing, if you want to have a better battery life it recommended to charge your battery slowly. Just have the habit to charge it during the night.
See ya.
Sent from my GT-N7105 using xda app-developers app

I also got an lg very thick cable..which is also 5 pin and let me tell it charges REEEEAAAALLLLYYYY FAST..when seen in application posted in op(thanx) it shows 1800..but the problem is if I detach charging before battery full notification then the battery is consumed at very high rate..I.e battery life decreased or maybe shows fake battery percentage. .and if I go for full charge it takes half hour more after 100% to show battery full in notification. .
Sent from my GT-N7100 using Tapatalk 2

lucier said:
Hi!
So, the AC adaptater mentionne 2A but it doesn't mean that your devuce consume 2A... It means that the AC adaptater can provide 2A under 5V.
If a load need to consume 500mA the adaptater can provide enough power. But if it needs more than 2A, the ouput current will be at the 2A max but your voltage will decrease (it means that you have a device problem!).
The only thing to do is to refer to the user manual of device.
One thing more, the USB protocole fix the maximun current to 1A!
An other thing, if you want to have a better battery life it recommended to charge your battery slowly. Just have the habit to charge it during the night.
See ya.
Sent from my GT-N7105 using xda app-developers app
Click to expand...
Click to collapse
Yes, the stock charger doesn't provide full 2A current.
And is it true that if the device is charged slowly the battery backup will be better? I mean that would be good then. I'll try that, thanks for informing.
sumeshd said:
I also got an lg very thick cable..which is also 5 pin and let me tell it charges REEEEAAAALLLLYYYY FAST..when seen in application posted in op(thanx) it shows 1800..but the problem is if I detach charging before battery full notification then the battery is consumed at very high rate..I.e battery life decreased or maybe shows fake battery percentage. .and if I go for full charge it takes half hour more after 100% to show battery full in notification. .
Sent from my GT-N7100 using Tapatalk 2
Click to expand...
Click to collapse
On my old cable, the damaged stock one, it'd take half an hour to reach 100% from 99. With this one it takes 5-6 mins.
This whole charging process is complicated that much I can say.
'Swyped' from my GT-N7100

Unfortunately I got a grey import so my stock charger was for a different country.
I'm having to use a 1.0A charger instead.
It still only takes a few hours to charge though. I sleep for 4-5 hours and it's always fully charged when I wake up.
Sent from my GT-N7100 using xda app-developers app

Hmm is this a accurate way of measuring amp?
I was using same cord and the apk provided above, using the default 2amp charger says 1697 and using a bellkin in charger rated at 1amp,says the same thing?
Hmm

I am a bit confused, which of the following is my actual charging rate? The charge is really slow, around 15% per hour or so.
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.

As I stated in the screenshot, you shouldn't look at current_now, it'll always be same, 1698, you should look at current_avg.
'Swyped' from my GT-N7100

Damn. That means it's time for me to get a new charger, isn't it?
Just switched to a very old 0.7 A output charger my father uses on his primitive samsung device. It gives better results than my stock charger/USB cable, provided by samsung. 800 mA on a 700 mA charger. How is that even possible?
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.

SacGuru said:
I am a bit confused, which of the following is my actual charging rate? The charge is really slow, around 15% per hour or so.
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.
Click to expand...
Click to collapse
are using stock cable ?

yahyoh said:
are using stock cable ?
Click to expand...
Click to collapse
Yeah I am. The stock charger says 2A, 5V. When used with the stock cable it charges at a mere 200-400 mA. I used the wall charger of an old samsung phone (doesn't have a usb cable, just a wall charger) and current rises to 800mA. Where can I buy a good USB cable at in the UK?
Sent from my GT-N7100.
Those who help noobs go to heaven. True story.

I have buy a new stock charger because I was thinking my stock one was dead (slow charging / usb mode)...
But in fact it's not my stock charger who is defected but it's just the cable!!!
Just try with another cable and it's OK (AC mode).
Thanks for the apk!

[Q] Why does the S4 i9505 charge so slow ?

So is it me or does the s4 charge really really slow ?
is this the same for everyone ?
any fixes ?

gremlininthesystem said:
So is it me or does the s4 charge really really slow ?
is this the same for everyone ?
any fixes ?
Click to expand...
Click to collapse
How long does your phone charge from low to full? Mine is around 2 and 1/2 hours maybe? Im using my Nokia 808s USB charger though. havent tried charging it with the included white charger, cable is too short for me.

gremlininthesystem said:
So is it me or does the s4 charge really really slow ?
is this the same for everyone ?
any fixes ?
Click to expand...
Click to collapse
Hi,
What is your charge time?
Mine is 2 to 2 and a half hours.

Which battery and/or charger are you using? After coming from the S2 I have noticed a large decrease in charging time with my S4, so this is very surprising to me.

Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app

gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
Click to expand...
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Well, laptop's USB port is not a charger - it's too weak for such a large battery.

gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
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...*facepalm*. You're not using original charger and you're complain that the one you use doens't works so well? Do you know that original charger is pulling 2000mA out, while your usb-port is pulling between 300mA and 500mA (depends if it front or back usb-port and the quality of usb port). Do the math, 2600mAh battery and 300mA / h. Full charge should take: 2600:300 = more than 8.5 hours.
With original charger S4 recharges from 0 to 100 in 1h 49minutes. If you take a solar charger it will charge even slower (like 48 hours for 0-100%).
Next time try to use your brain before complaining.

oliver005 said:
...
Next time try to use your brain before complaining.
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no need to be rude. Not everyone knows that USB voltage varies.

Zymesh said:
...Im using my Nokia 808s USB charger though. havent tried charging it with the included white charger, cable is too short for me.
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Your Samsung power brick has the cable physically attached to it? If not, you can just use a longer cable with the Samsung power supply.
The included power supply is 2 Amps, whoever is getting long charging times, make sure you use either the original Samsung power supply, or comparable in amperage supply.
Mine charges in 2 and a half hours.

Mine takes 2 to 2.5 h to charge from 0 to 100 percent. You should only use the new white charger, it's more powerful than the black one from s3, it's output is 2.0A ,old one is only 1.0A. Newer use other chargers as they may mess up your battery or phone.
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kreoXDA said:
Your Samsung power brick has the cable physically attached to it? If not, you can just use a longer cable with the Samsung power supply.
The included power supply is 2 Amps, whoever is getting long charging times, make sure you use either the original Samsung power supply, or comparable in amperage supply.
Mine charges in 2 and a half hours.
Click to expand...
Click to collapse
I have to check the amps but based on google the Nokia Charger is at 1.3 Amps. I need to remind myself to switch the short Samsung to longer Nokia cables.
Is it safe to get a higher Amp charger, the one that the iPad uses to charge my S4? No drawback execpt for a faster charging time right?

Zymesh said:
I have to check the amps but based on google the Nokia Charger is at 1.3 Amps. I need to remind myself to switch the short Samsung to longer Nokia cables.
Is it safe to get a higher Amp charger, the one that the iPad uses to charge my S4? No drawback execpt for a faster charging time right?
Click to expand...
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Take it this way, grilling meat takes for example 45minutes to cook completely. You take it to some powerful furnace like 2000degrees for 5minutes then what do you expect from it to give you back? Well cooked meat or some burned meat outside and maybe raw inside?
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put it this way... the s3 comes with a 700ma charger. it charges a bit slow. and has a 2100mah battery.
the s4 comes with a 2 amp charger. thats 2000ma. it doesnt charge slowly if you use this charger. i personally am going to pop it on this charger when i get home from work and then keep it on my 700ma charger overnight... no reason to waste that powerful output, it will simply waste electricity.
make sure:
1. you use the charger that came with it
2. you use a cable thats as long as (or shorter than) the stock charging cable. longer usb cables tend to charge the phone slower.
also keep in mind usb ports charge any phone slowly. the s4 will charge even slower on them because the battery is oversized compared to most.

I'm using note 2 charger and if I surf Web while charging, literally it is not charging at all.. battery is not going up or down.. Note 2 was not like this.. i could charge battery even if I play 3d game..
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u r right. but may and im pretty sure its just a software issue.
---------- Post added at 09:02 PM ---------- Previous post was at 08:59 PM ----------
fade2green514 said:
put it this way... the s3 comes with a 700ma charger. it charges a bit slow. and has a 2100mah battery.
the s4 comes with a 2 amp charger. thats 2000ma. it doesnt charge slowly if you use this charger. i personally am going to pop it on this charger when i get home from work and then keep it on my 700ma charger overnight... no reason to waste that powerful output, it will simply waste electricity.
make sure:
1. you use the charger that came with it
2. you use a cable thats as long as (or shorter than) the stock charging cable. longer usb cables tend to charge the phone slower.
also keep in mind usb ports charge any phone slowly. the s4 will charge even slower on them because the battery is oversized compared to most.
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wow... what a science expert... first time i heard that longer cables charge slower... LOL
u funny dude.. there is no such thing like that buddy!
its just a software issue. S4 is just released and the chipset is very new. u people should wait for sometime...its a matter of few firmware releases from samsung for S4 and all the issues will be resolved. just like the latest issue resolved the over heating issues.

gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
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:laugh: u made my day bro :good:

gremlininthesystem said:
Well I tried charging from my computers use port at work today only rise 20% in 2 hours
Sent from my GT-I9505 using xda app-developers app
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USB is too low a voltage to charge a modern smartphone all that quickly, my S4 take 2.5 hours roughly to full charge on the stock charger.

androidizen said:
USB is too low a voltage to charge a modern smartphone all that quickly, my S4 take 2.5 hours roughly to full charge on the stock charger.
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Voltage is exactly the same. It's amperage that you're thinking of.
Sent from my Nexus 7 using Tapatalk HD

Anyone tried using phone while charging? Mine charges 1% per hour while surfing web
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reservin said:
Anyone tried using phone while charging? Mine charges 1% per hour while surfing web
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Im using the white 2amp charger. It doesnt go down even when watching movies. Are you using the charger that came with your s4? There might ba a problem with your s4?
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Charging at only 800-1000 instead of 1800

Hi,
My Note 2 charging has become drastically slow in the recent times. Initially, when i checked the charging current using the GCC app (galaxy charging current), it showed me 1800 and now it never goes beyond 1000 and most of the times, it's between 800-900.
I have tried doing a factory reset and the problem still occurs.
Any clue on how to increase the charging capacity?
The reason I want the phone to charge at its max capacity is because I travel a lot and I do not get a lot of time to charge my phone and with its current state, I barely get 10 percent charge in 15-20 mins...
Please advice...
Thanks,
Dinesh

I experience the same thing but mine drop until 300mA, the battery is draining while charging if im using it. I changed to different cable and the reading change to 1200 or 1400. Try use different cable.
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darkteb said:
I experience the same thing but mine drop until 300mA, the battery is draining while charging if im using it. I changed to different cable and the reading change to 1200 or 1400. Try use different cable.
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Tried various cables. Same issue. It never goes beyond 1000 mAh and most of the times, its at 800 mAh.
EDIT: It worked with a new SGS 4 cable. So looks like the cable is faulty.
Thanks for the heads up.

I use an old cable from a sony ericsson play and the charge rate never drops below 1698 the original lead doesn't seem to be that good
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Correct guys, the included cable in the package will only give you around 800-1000MA. I have read a thread about this here so what I did I swap my white cable to a different one (original cable of Note 1) and the charging capacity of my note 2 is now 1800MA.

lifehijack said:
Hi,
My Note 2 charging has become drastically slow in the recent times. Initially, when i checked the charging current using the GCC app (galaxy charging current), it showed me 1800 and now it never goes beyond 1000 and most of the times, it's between 800-900.
I have tried doing a factory reset and the problem still occurs.
Any clue on how to increase the charging capacity?
The reason I want the phone to charge at its max capacity is because I travel a lot and I do not get a lot of time to charge my phone and with its current state, I barely get 10 percent charge in 15-20 mins...
Please advice...
Thanks,
Dinesh
Click to expand...
Click to collapse
The cable does seem to degrade over time .Mine would even seem to get loose much easier than before. It happened to me. I ended up buying a heavy duty cable from Amazon that makes a secure and tight connection to the phone and charging has become so much faster now.

use perseus kernel and go to power then ignore unstable power, try, it may work

Change your cable . Note 2 cable not so good
Sent from Oppo Find [email protected]

Use the cable that came with your phone. I used my s2 cable with note ii n got only 800
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Mine is fine, with original cable
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Yup it looks like the cable is faulty.
Tried using an S4 cable and it gives me 1800mAh charge properly.
Then I tried an HTC One X cable and it's steady at 1500 ( not too bad).
I'm going to the service center to ask for a replacement cable.

with perseus (with the same hardware) it works perfectly.

lifehijack said:
Hi,
My Note 2 charging has become drastically slow in the recent times. Initially, when i checked the charging current using the GCC app (galaxy charging current), it showed me 1800 and now it never goes beyond 1000 and most of the times, it's between 800-900.
I have tried doing a factory reset and the problem still occurs.
Any clue on how to increase the charging capacity?
The reason I want the phone to charge at its max capacity is because I travel a lot and I do not get a lot of time to charge my phone and with its current state, I barely get 10 percent charge in 15-20 mins...
Please advice...
Thanks,
Dinesh
Click to expand...
Click to collapse
Get THIS, man. And forget about 'charging problems'.
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