Related
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
I have a Verizon Galaxy Tab 7.7 i815.
It's an amazing tablet for video playback because of the large AMOLED screen. Comparable to plasma screens.
So, the problem I have is that while it's great for this, it is also extremely picky on the charger. Basically, the only thing I can get to recharge this is with the Samsung usb charger that plugs into power.
It will not even charge from the computer.
And of course, it refuses to charge from portable power banks. This is kind of a big deal because the battery life of this tablet is pretty bad, so being able to use a power bank would be great.
Any idea why this is? How to fix? Maybe I just have a bad unit? What's going on?
taiwwa said:
I have a Verizon Galaxy Tab 7.7 i815.
It's an amazing tablet for video playback because of the large AMOLED screen. Comparable to plasma screens.
So, the problem I have is that while it's great for this, it is also extremely picky on the charger. Basically, the only thing I can get to recharge this is with the Samsung usb charger that plugs into power.
It will not even charge from the computer.
And of course, it refuses to charge from portable power banks. This is kind of a big deal because the battery life of this tablet is pretty bad, so being able to use a power bank would be great.
Any idea why this is? How to fix? Maybe I just have a bad unit? What's going on?
Click to expand...
Click to collapse
You need an adapter to charge with computer or battery or anything besides the stock charger. I was trying to find one on ebay without success. I will look again. The one I have is made by Pizen and was $2.
http://www.ebay.com/itm/FOR-Samsung...=Laptop_Adapters_Chargers&hash=item1c36f25bea
You need something like this.
Sent from my GT-P6810 using xda app-developers app
taiwwa said:
I have a Verizon Galaxy Tab 7.7 i815.
It's an amazing tablet for video playback because of the large AMOLED screen. Comparable to plasma screens.
So, the problem I have is that while it's great for this, it is also extremely picky on the charger. Basically, the only thing I can get to recharge this is with the Samsung usb charger that plugs into power.
It will not even charge from the computer.
And of course, it refuses to charge from portable power banks. This is kind of a big deal because the battery life of this tablet is pretty bad, so being able to use a power bank would be great.
Any idea why this is? How to fix? Maybe I just have a bad unit? What's going on?
Click to expand...
Click to collapse
Mine (a P6800) charges normally from USB (only with the screen off and charges VERY slowly, though; despite the battery icon showing an "X") and from my power bank. That power bank is chinese, got it from DealExtreme, and puts out 2A of current (the same as the stock charger). The battery icon also shows an "X" when charging from it, though.
Are you sure it doesn't charge? Or does it display an "X" but still charges when not in use?
Steve_max said:
Mine (a P6800) charges normally from USB (only with the screen off and charges VERY slowly, though; despite the battery icon showing an "X") and from my power bank. That power bank is chinese, got it from DealExtreme, and puts out 2A of current (the same as the stock charger). The battery icon also shows an "X" when charging from it, though.
Are you sure it doesn't charge? Or does it display an "X" but still charges when not in use?
Click to expand...
Click to collapse
Just for info.
The stock kernel will allow only USB charge at a rate of 450mA, regardless of a power bank or PC USB connection. Max AC is 1500mA.
my P6800/P6810 SkyHigh kernel will USB charge up to AC max (1500mA), using same device circuitry. The kernel is also modded to allow charging icon animation when connected to USB power source. This is because it thinks the source is AC. There are no System.UI.apk changes needed
Sent from my GT-I9500 using XDA Premium 4 mobile app
how do you install this?
taiwwa said:
how do you install this?
Click to expand...
Click to collapse
Sorry, the kernel will only work on P6800/P6810 devices (if that's what you're referring to). Was was info about charging rates...
Sent from my GT-I9500 using XDA Premium 4 mobile app
UpInTheAir said:
Just for info.
The stock kernel will allow only USB charge at a rate of 450mA, regardless of a power bank or PC USB connection. Max AC is 1500mA.
my P6800/P6810 SkyHigh kernel will USB charge up to AC max (1500mA), using same device circuitry. The kernel is also modded to allow charging icon animation when connected to USB power source. This is because it thinks the source is AC. There are no System.UI.apk changes needed
Sent from my GT-I9500 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
AC max is 1.5A? Weird... The charger is good for 2A, and we've got more than enough battery to charge at 2A safely. Any way to increase the AC limit on your kernel, maybe configurable by a file/variable/etc?
And I'm pretty sure the device charges at more than 450mA from my power bank. Just checked, and realized that the charging icon appears normally (on stock 4.1 kernel). Galaxy Charging Current reports a 2A current on my S3 (Temasek kernel, adjusted for a maximum of 2000 mA on AC, 1200 mA on USB3 and 650 mA on USB2). Some power banks appear exactly like an AC charger as far as the USB connection is concerned.
Steve_max said:
AC max is 1.5A? Weird... The charger is good for 2A, and we've got more than enough battery to charge at 2A safely. Any way to increase the AC limit on your kernel, maybe configurable by a file/variable/etc?
And I'm pretty sure the device charges at more than 450mA from my power bank. Just checked, and realized that the charging icon appears normally (on stock 4.1 kernel). Galaxy Charging Current reports a 2A current on my S3 (Temasek kernel, adjusted for a maximum of 2000 mA on AC, 1200 mA on USB3 and 650 mA on USB2). Some power banks appear exactly like an AC charger as far as the USB connection is concerned.
Click to expand...
Click to collapse
Why weird? Is all in the P6800 kernel source code.... I've not mentioned SGS3 ....
Those apps may just detect the source input, not the actual charge rate limited by kernel. Big difference afraid.
If the P6800 stock kernel detects it being charged as USB, all you will actually get is max 450mA. Same goes for AC, may show the source input greater, but charging rate is limited to max 1500mA. You can see my kernel commits on gitHub and study for yourself.
Remember, those charging current apps while useful, do have a large degree of variance as well.
Sent from my GT-I9500 using XDA Premium 4 mobile app
UpInTheAir said:
Why weird? Is all in the P6800 kernel source code.... I've not mentioned SGS3 ....
Those apps may just detect the source input, not the actual charge rate limited by kernel. Big difference afraid.
If the P6800 stock kernel detects it being charged as USB, all you will actually get is max 450mA. Same goes for AC, may show the source input greater, but charging rate is limited to max 1500mA. You can see my kernel commits on gitHub and study for yourself.
Remember, those charging current apps while useful, do have a large degree of variance as well.
Sent from my GT-I9500 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Weird because the charger that comes with the P6800 is rated 2A, and the P6800 battery is big enough to charge at 2A and stay under 0.7C. There is no reason at all to limit the charge to only 1.5A, unless the circuitry won't handle that (which would be a bad screwup by Samsung). I just asked if it is possible to change this "hard" limit on your kernel. I didn't mention the I9300 on this point, only as an example of a device where this is adjustable on custom kernels (it's also adjustable on your I9500, by the way, check Perseus kernel).
Actually, that app detect the actual charge rate as limited by the kernel (on the I9300). That app doesn't work on the P6800, because the kernel doesn't output those values. On the I9300, some kernels allow you to configure the maximum input current (@5V, from the charger) and the maximum current output (@~4.35V, to charge the battery). But that is not important; my point was just that some power banks (like mine) have the exact same USB connection as a regular wall charger, so the phone/tablet/whatever sees it as a regular wall charger even on stock kernel. The OP could search for one of those, if his device charges normally from wall chargers it will charge from a power bank like this.
And BTW, Apple chargers are crap, they won't output full current unless they detect an Apple device. So, no Android/WP/etc will charge correctly from an Apple charger.
Steve_max said:
Weird because the charger that comes with the P6800 is rated 2A, and the P6800 battery is big enough to charge at 2A and stay under 0.7C. There is no reason at all to limit the charge to only 1.5A, unless the circuitry won't handle that (which would be a bad screwup by Samsung). I just asked if it is possible to change this "hard" limit on your kernel. I didn't mention the I9300 on this point, only as an example of a device where this is adjustable on custom kernels (it's also adjustable on your I9500, by the way, check Perseus kernel).
Actually, that app detect the actual charge rate as limited by the kernel (on the I9300). That app doesn't work on the P6800, because the kernel doesn't output those values. On the I9300, some kernels allow you to configure the maximum input current (@5V, from the charger) and the maximum current output (@~4.35V, to charge the battery). But that is not important; my point was just that some power banks (like mine) have the exact same USB connection as a regular wall charger, so the phone/tablet/whatever sees it as a regular wall charger even on stock kernel. The OP could search for one of those, if his device charges normally from wall chargers it will charge from a power bank like this.
And BTW, Apple chargers are crap, they won't output full current unless they detect an Apple device. So, no Android/WP/etc will charge correctly from an Apple charger.
Click to expand...
Click to collapse
Comparing kernels from different boards and CPU etc is like comparing apples and oranges.
If I could make the charge current configurable in my kernel, don't you think I would have already? Not everything is "cut and paste" and I expended allot of time in trying to port the mod for our current hardware.
Yeah, I've used just about all the kernels (at time of owing device) including perseus, siyah etc, do have good experienceI with configurable kernel charge. After using/having SGS2 x2, SGS3 x1, SGS4 x1 and SGT P6810 x1, it's not the first time I've heard of it.....
I won't be increasing max charge rate on the SkyHigh kernel above 1500mA. This generally increases battery heat and shortens lifespan.
On stock kernel + unmodified systemUI.apk for battery charge icons, if the kernel detects ANY charge source as USB, the max rate will be 450 mA. You will not see any battery charging animation (just the red x), which is a "sure fire way" to check.
In short, on our SGT-7.7, under stock conditions, if you connect ANY charging source and you DON'T have the battery charge animation, it will be USB charge at 450mA max.
Sent from my GT-I9500 using XDA Premium 4 mobile app
UpInTheAir said:
Comparing kernels from different boards and CPU etc is like comparing apples and oranges.
If I could make the charge current configurable in my kernel, don't you think I would have already? Not everything is "cut and paste" and I expended allot of time in trying to port the mod for our current hardware.
Yeah, I've used just about all the kernels (at time of owing device) including perseus, siyah etc, do have good experienceI with configurable kernel charge. After using/having SGS2 x2, SGS3 x1, SGS4 x1 and SGT P6810 x1, it's not the first time I've heard of it.....
I won't be increasing max charge rate on the SkyHigh kernel above 1500mA. This generally increases battery heat and shortens lifespan.
On stock kernel + unmodified systemUI.apk for battery charge icons, if the kernel detects ANY charge source as USB, the max rate will be 450 mA. You will not see any battery charging animation (just the red x), which is a "sure fire way" to check.
In short, on our SGT-7.7, under stock conditions, if you connect ANY charging source and you DON'T have the battery charge animation, it will be USB charge at 450mA max.
Sent from my GT-I9500 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I didn't say it would be an easy/simple port, I just asked if it was possible. I didn't look at your github (and I have almost no experience with the P6800 kernel)... You know your sources better than anyone else, so I assumed you would understand better than I do what (and where) would need to be changed. I'm not diminishing your work or your effort in any way, shape or form; I respect the developers who stuck with this amazing device for so long, and who continue to make it usable way past what Samsung intended.
Our battery has a total capacity of 5100 mAh. From http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries:
The charge rate of a typical consumer Li-ion battery is between 0.5 and 1C
Click to expand...
Click to collapse
That gives us a "safe" maximum charging rate of between 2550 mA and 5100 mA. 0.7C is generally agreed as a good rate for this first stage charge for Li-Po batteries, which means 3570 mA; the regulators on the tablet will reduce the rate when needed. Generally, charging Li-ion/Li-po batteries at such a low rate (~0.3C) is detrimental to the battery max charge, and a major screwup by Samsung (and explains why my P6800's battery doesn't last as long now as it did on its first month); that is why I asked. But that was just a question. If you won't do it, I respect your position.
About charging from the power bank, I don't get your point. As I said, when I plug my P6800 on my power bank, I don't get the red X; I see the regular charging animation, and the device charges as fast as it does on the stock wall charger (which is just an adapter that presents an USB connection where you plug the tablet's cable). I understand that when the tablet recognizes it's on a standard USB port, it will use the lower charge rate. But "power-only" USB ports, such as the one on the Samsung wall charger and the one on some power banks, will be recognized as power-only connections (or as the same as the Samsung wall charger), and will charge the device as fast as the kernel allows.
My power bank (this model to be precise) is detected as an AC charger on both my I9300 and my P6800, and would be a good option for the OP.
Don't get my point? Please 're-read the last paragraph in my previous post carefully.... I wasn't disputing your claim, but explaining about the battery charge icon.
Obviously your power bank has some "trickery" to fool the device as AC charge. Probably a resistor combo across the lines inside the source. This being the case, makes a good option for OP (or anyone else) on stock.
UpInTheAir said:
Don't get my point? Please 're-read the last paragraph in my previous post carefully.... I wasn't disputing your claim, but explaining about the battery charge icon.
Obviously your power bank has some "trickery" to fool the device as AC charge. Probably a resistor combo across the lines inside the source. This being the case, makes a good option for OP (or anyone else) on stock.
Click to expand...
Click to collapse
yeah, one of my power banks would trick my tab on one of its ports. some resistor thing.
Its due to having resistors put across the data lines.
This is done to trigger the tablet into AC charging mode.
the wall charger has this done to it.
some batterys have a samsung charger cable or a micro usb adapter.
This adapter has resisters inside it.
i have one of these and charges on ac charging.
if i get another cable such as data or car charger etc..
it wont trigger charge even on 2 amps.
good news is a adapter can be made to go from usb to usb...look it up it has 2 resisters in it and also shorts the data lines to each other.
MRBR7 said:
Its due to having resistors put across the data lines.
This is done to trigger the tablet into AC charging mode.
the wall charger has this done to it.
some batterys have a samsung charger cable or a micro usb adapter.
This adapter has resisters inside it.
i have one of these and charges on ac charging.
if i get another cable such as data or car charger etc..
it wont trigger charge even on 2 amps.
good news is a adapter can be made to go from usb to usb...look it up it has 2 resisters in it and also shorts the data lines to each other.
Click to expand...
Click to collapse
Just as I presumed. Thanks
Sent from my GT-I9500 using XDA Premium 4 mobile app
I have a charger that has two usb ports in it. One says ipad and the other galaxy tab.
If I use the ipad one and use it on the 7.7 it thinks an usb device is connected, shows the charging icon and also the red x, but doesn't charge. I think it just has to do with the voltage it receives on certain pins, but what is the meaning of the cross?
Menster said:
I have a charger that has two usb ports in it. One says ipad and the other galaxy tab.
If I use the ipad one and use it on the 7.7 it thinks an usb device is connected, shows the charging icon and also the red x, but doesn't charge. I think it just has to do with the voltage it receives on certain pins, but what is the meaning of the cross?
Click to expand...
Click to collapse
As it will accept a max of 450mA on detected "USB charge", it still should charge, but very slowly.
If you leave the screen off for a while, you should see the battery % indicator increase. If you use the tab while on detected USB charge, the device may consume more current than 450mA, hence the battery % indicator may not increase but instead decrease.
Sent from my GT-I9500 using XDA Premium 4 mobile app
Hi Guys, ive been part of the HTC One X scene and now i am getting an s4, question is i hate Touchwiz with a passion!! so i want to use an AOSP rom, my question is what is the easiest one to use and are modded kernals a good idea with this phone? regards,
I use Danvdh's GPE ROM. It basically converts your existing S4 into a Google Play Edition S4, but with some subtle enhancements. Being a GPE ROM, it also has the advantage of using Samsung libraries for its hardware, which makes it run more smoothly than the AOSP alternatives that use reverse engineered drivers.
I had been leaning to that Rom, what about kernels any that actually make a noticeable difference? I keep seeing fast charge pop up ?
Sent from my HTC One using XDA Free mobile app
Use the Googy Max kernel that's included, or use the more up-to-date Hulk kernel variant of Googy Max. Alucard's kernel reportedly has a battery drain issue and the stock kernel introduces random reboots. As for fast charging, I've not gone through every post in that thread so if there is a fast charge option I'm not aware of it.
Is there any idiots guide to do it? Lok
Sent from my HTC One using XDA Free mobile app
An idiot's guide to install the ROM? Root, install a custom recovery (TWRP recommended here), and install the ROM through recovery. The various kernels and ROM options are all in the zip, as it uses Aroma installer.
Easiest way to root? Still on kitkat if that makes a difference
Sent from my HTC One using XDA Free mobile app
CF-Autoroot. There should be a thread for it in S4 General.
I actually find the CM12 optimzed builds to be a bit snappier than GPE. But GPE is more stable and bug free. I had several problems with the latest CM12 builds.
You can always change roms afterwards. But I keep coming back to GPE The only downside is that there is no ktoonsez kernel for GPE 5.0.
It's an awesome kernel and the only one, that I know of, to offer GPU Overclocking.
Alucard and Googy-Max kernels are great too.
Fast charge is designed for USB. The USB current is lower than the AC current. This means that the phone takes a lot longer to charge via USB.
Fast charge substitutes AC to USB. Meaning that it will charge via USB with the same current as AC.
I was thinking of the rapid charging devices like the Nexus 6 have, where you get 50% power in roughly a half hour. Glad someone around here can keep me straight.
Strephon Alkhalikoi said:
I was thinking of the rapid charging devices like the Nexus 6 have, where you get 50% power in roughly a half hour. Glad someone around here can keep me straight.
Click to expand...
Click to collapse
Well, it was mainly done to increase charging speed via USB, I think.
But you can also increase the current on AC charger. Which means it charges faster, similar to what you said.
I don't know what the default is on touchwiz stock kernel, but Googy set it at 1450 mAh for AC.
Alucard kernel comes with 1900 mAh for AC. Which means it charges relatively faster. Look at it as "Overclocking" your charger
But it may also reduce the battery's life.
Googy and Hulk allow you to set the AC and USB voltages, so I left USB alone but set AC to 1900. Its unlikely that battery life will be adversely affected by ramping up the amperage of the charging circuit, unless the battery gets exceptionally hot (it doesn't) in the process. The stock charger won't be damaged by doing this as the charger is rated for 2A in the first place. Third party chargers, as long as they're rated for 2A, won't be damaged. Smaller chargers will eventually fry.
I leave it at 1450. I'm in no hurry. Especially when I'm gaming
Hi friends
My device
there is the problem of slow charging
The current value 304-500maH
I tried all versions. V30a,V30b,v30c,v30d,v30e,v30f all the same problem
All transactions did. Wipe data factory and wipe cache :/
Thanks...
Daytona675tr said:
Hi friends
My device
there is the problem of slow charging
The current value 304-500maH
I tried all versions. V30a,V30b,v30c,v30d,v30e,v30f all the same problem
All transactions did. Wipe data factory and wipe cache :/
Thanks...
Click to expand...
Click to collapse
Hello friend, whenever you plug your device in USB port or a less powerful charger, it will show as slow charging. Use a 1.8A, 2.0A or more output charger to charge your phone.
[The Punisher] said:
Hello friend, whenever you plug your device in USB port or a less powerful charger, it will show as slow charging. Use a 1.8A, 2.0A or more output charger to charge your phone.
Click to expand...
Click to collapse
Thanks but I use the original charger 1.8a
Kitkat 4.4.2 no problem 1610 mah
Just lollipop problem
Hi,
I have the exact same problem. I recently upgraded my LG G2 (EU version - Dutch) from KitKat to Lollipop (5.0.2).
My car charger and wall charger (both 2.1A) were able to charge my G2 in a fast way under KitKat.
But now under Lollipop, these chargers have become useless (they charge very very slow).
My battery is draining while using GPS and media streaming in my car with car charger attached (whereas with KitKat everything worked fine, and my battery gained extra power...)
Only the official LG OEM charger can charge my phone fast.
How can I fix this? Somehow LG verifies if the official charger is attached, and otherwise he limits the charging?
I hope you guys can help me out?
Thx in advance!
Possibly a temperature issue
DaMackie said:
Hi,
I have the exact same problem. I recently upgraded my LG G2 (EU version - Dutch) from KitKat to Lollipop (5.0.2).
My car charger and wall charger (both 2.1A) were able to charge my G2 in a fast way under KitKat.
But now under Lollipop, these chargers have become useless (they charge very very slow).
My battery is draining while using GPS and media streaming in my car with car charger attached (whereas with KitKat everything worked fine, and my battery gained extra power...)
Only the official LG OEM charger can charge my phone fast.
How can I fix this? Somehow LG verifies if the official charger is attached, and otherwise he limits the charging?
I hope you guys can help me out?
Thx in advance!
Click to expand...
Click to collapse
Daytona675tr said:
Thanks but I use the original charger 1.8a
Kitkat 4.4.2 no problem 1610 mah
Just lollipop problem
Click to expand...
Click to collapse
Few days ago i was exactly in your shoes. I came from a custom rom (cloudy g2 2.2 with dorimanx kernel ) to the stock lollipop 5.0.2 . While being on the lollipop rom the device could not hold a charging rate above the 350-400 mah. Through some testing i found out that device needs to be below a certain temperature (for me at least, it was around 60 degrees celsius ) in order to charge at a 1600 mah rate.
I have tested some stuff during the weekend, but in my case, it isn’t temperature related. Even when the battery temp is low, the 2.1A charger still charfes very slow, while the OEM chargers goes full speed. So battery temp doesn’t affect my charging speeds.
Even during the hot summer days, my car charger was able to charge quickly while using KitKat.
Golfis said:
Few days ago i was exactly in your shoes. I came from a custom rom (cloudy g2 2.2 with dorimanx kernel ) to the stock lollipop 5.0.2 . While being on the lollipop rom the device could not hold a charging rate above the 350-400 mah. Through some testing i found out that device needs to be below a certain temperature (for me at least, it was around 60 degrees celsius ) in order to charge at a 1600 mah rate.
Click to expand...
Click to collapse
Nothing that was posted on this thread is correct, lg's lollipop kernel is horrible and only slow charges. Thats why Dorimanx when build his kernel had to add a feature that allows fast charging.
DaMackie said:
I have tested some stuff during the weekend, but in my case, it isn’t temperature related. Even when the battery temp is low, the 2.1A charger still charfes very slow, while the OEM chargers goes full speed. So battery temp doesn’t affect my charging speeds.
Even during the hot summer days, my car charger was able to charge quickly while using KitKat.
Click to expand...
Click to collapse
Eminemiero said:
Nothing that was posted on this thread is correct, lg's lollipop kernel is horrible and only slow charges. Thats why Dorimanx when build his kernel had to add a feature that allows fast charging.
Click to expand...
Click to collapse
I read somewhere that from the lollipop version of android and onwards , a certain " code " has been implemented in the stock kernel (and as result every stock based kernel out there) , that checks whether or not the original charger is being used or not. Might be false, might be true ? who knows? i only have the original charge so i cannot test it out. On the other hand, many custom kernel developers including Dorimanx as @Eminemiero says do actually have a workaround implemented on their kernels to give the possibility to achieve full charging rate even on 3rd party chargers
Golfis said:
I read somewhere that from the lollipop version of android and onwards , a certain " code " has been implemented in the stock kernel (and as result every stock based kernel out there) , that checks whether or not the original charger is being used or not. Might be false, might be true ? who knows? i only have the original charge so i cannot test it out. On the other hand, many custom kernel developers including Dorimanx as @Eminemiero says do actually have a workaround implemented on their kernels to give the possibility to achieve full charging rate even on 3rd party chargers
Click to expand...
Click to collapse
I do have the original charger but only on stock 30b i think it was i could fast charge. In any other rom i had to wait hours to get full charged.
Its strange, all i know is that lg ****ed it
Eminemiero said:
I do have the original charger but only on stock 30b i think it was i could fast charge. In any other rom i had to wait hours to get full charged.
Its strange, all i know is that lg ****ed it
Click to expand...
Click to collapse
What about the stock based roms? (Meaning not the aosp based ones)
Golfis said:
What about the stock based roms? (Meaning not the aosp based ones)
Click to expand...
Click to collapse
same issue.
try dorimanx latest kernel. If you are not a fan of custom kernels, then just install it and dont touch nothing on its settings
Try Llama sweet kernel.
Install synapse from play store.
Install UKM zip from recovery . find in main kernel thread.
Open synapse go to misc . enable fast charge . set it to 1200 Mah . you are done
Don't forget to nandroid backup before.
I'm a n00b when it comes to flashing custom roms, custom kernels etc (never did it before).
What is the easiest way for me to achieve the fast charging back on my LG G2 device with the other chargers?
Maybe some step by step instructions?
Can you use an alternative kernel on the original LG stock rom? I'm happy with the stock rom, except for the charging issue i'm facing...
many thanks!!
Anyone facing heating issue while charging with stock charger? Is it only me or anyone else facing the same ?
Temperature goes upto 45°c ..is it normal ?
hk96 said:
Anyone facing heating issue while charging with stock charger? Is it only me or anyone else facing the same ?
Temperature goes upto 45°c ..is it normal ?
Click to expand...
Click to collapse
i'm using the default charger (out of box, 5V 2A) on RN7 (chinese rom), battery doesnt heat up as the app (AccuBattery) saying temperature upto 36 or 37 C, once i seen shooted at 39 C (max)
but in any case phone was slightly heated on top from behind (adjacent to back camera), i think it may be due to processor but the battery temperature was fine
shahm64m said:
i'm using the default charger (out of box, 5V 2A) on RN7 (chinese rom), battery doesnt heat up as the app (AccuBattery) saying temperature upto 36 or 37 C, once i seen shooted at 39 C (max)
but in any case phone was slightly heated on top from behind (adjacent to back camera), i think it may be due to processor but the battery temperature was fine
Click to expand...
Click to collapse
Battery temp depends on ambient temp too. It's about 36°c ambient here. So may be that's the reason for heating.
hk96 said:
Battery temp depends on ambient temp too. It's about 36°c ambient here. So may be that's the reason for heating.
Click to expand...
Click to collapse
i think it is not normal if ambient is 36 and on charging battery temp goes upto 45, you can also check different phones with different chargers
or you can try charging your phone via laptop/PC, it will slow charge the device but you will see the temperature rise of battery be negligible
keep in mind that charger as well as charging cable both may contribute in heating up of phone
by the way which charger are you using?
just for information (not related to thread) you can visit the website regarding temperature and battery life
https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
shahm64m said:
i think it is not normal if ambient is 36 and on charging battery temp goes upto 45, you can also check different phones with different chargers
or you can try charging your phone via laptop/PC, it will slow charge the device but you will see the temperature rise of battery be negligible
keep in mind that charger as well as charging cable both may contribute in heating up of phone
by the way which charger are you using?
just for information (not related to thread) you can visit the website regarding temperature and battery life
https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Click to expand...
Click to collapse
Thanks for Ur reply.
Yeah, for high ambient it's ok to have high temp. I thought the same.
I am using charger that came with the box.
Saw many people complaining about the same. So thought of creating this thread.
hk96 said:
Thanks for Ur reply.
Yeah, for high ambient it's ok to have high temp. I thought the same.
I am using charger that came with the box.
Saw many people complaining about the same. So thought of creating this thread.
Click to expand...
Click to collapse
keep in mind that im using chinese rom (comes with the mobile), lucky me my mobile dont get heat up, same is the case with my friend we purchased the same RN7 chinese and both got lucky because mobile isnt heating while charging, although im thinking to purchase QC4 charger but don't know will it improves battery life (cycle) or degrade it at the cost of fast cahrging
shahm64m said:
keep in mind that im using chinese rom (comes with the mobile), lucky me my mobile dont get heat up, same is the case with my friend we purchased the same RN7 chinese and both got lucky because mobile isnt heating while charging, although im thinking to purchase QC4 charger but don't know will it improves battery life (cycle) or degrade it at the cost of fast cahrging
Click to expand...
Click to collapse
A custom kernel could be a solution for heating, or just charge at lower amps.
Reg. Qc4 make sure u charge in an AC room ?lol
hk96 said:
A custom kernel could be a solution for heating, or just charge at lower amps.
Reg. Qc4 make sure u charge in an AC room lol
Click to expand...
Click to collapse
I dont think QC 4 require AC room, as my friend owns vivo v15pro with fast charging (5V, 4A). no heating issues, im concerned because RN7 is a budget phone and normally budget phones dont offer QC3 or QC4/+
shahm64m said:
I dont think QC 4 require AC room, as my friend owns vivo v15pro with fast charging (5V, 4A). no heating issues, im concerned because RN7 is a budget phone and normally budget phones dont offer QC3 or QC4/+
Click to expand...
Click to collapse
Redmi note 7 is QC 4 certified by qualcomm.
See image attached.
thanks for the reply, i am still confuse because of the budget phone, i will try QC4 charger sometime later, let see what happens