Develop Bugs

[KERNEL PATCH - Devs only] Force AC (fast) charging

This is for kernel devs only. The patch is useless to those who do not/can not compile their own kernel.
I put together this patch for you guys at the request of a few different members here in the nexus forum. This allows one to force AC charging for any charger that is detected as USB (i.e. car chargers, inductive chargers through the pogo pins). This also works for MHL, HOWEVER you will most likely still be limited by the MHL adapter itself. With modification to the MHL adapter (splice in an additional charger) plus this mod, bunklung was able to charge at ~600-700 mA while mirroring and streaming.
To toggle the fast charge you must download IncrediControl v1.5 beta3 (http://www.incredikernel.com under Latest Downloads). Under the general tab, click on force fast charge, then apply. After you have done that, place your phone on the charger. You will see it is now detected as AC and if and only if the charger can put out more current than it was previously being limited to (more than 500mA) you will be able to use the additional current.
Good luck have fun.
http://www.incredikernel.com/wp-con...nitor/download.php?id=force_fast_charge.patch
NOTE: You may get a freeze/FC in IncrediControl once in while when toggling the charge. This is being worked on. I figured everyone could deal with a FC here or there to get this out earlier.
Fast charge toggle widget. No more need to open the app to toggle!
https://play.google.com/store/apps/details?id=com.incredicontrol.fastchargewidget

Cool! I look forward to seeing how well it works in practice. My car only sends usb power.
Sent from my Galaxy Nexus using xda premium

chad0989 said:
This is for kernel devs only. The patch is useless to those who do not/can not compile their own kernel.
I put together this patch for you guys at the request of a few different members here in the nexus forum. This allows one to force AC charging for any charger that is detected as USB (i.e. car chargers, inductive chargers through the pogo pins). This also works for MHL, HOWEVER you will most likely still be limited by the MHL adapter itself. With modification to the MHL adapter (splice in an additional charger) plus this mod, bunklung was able to charge at ~600-700 mA while mirroring and streaming.
To toggle the fast charge you must download IncrediControl v1.5 beta3 (http://www.incredikernel.com under Latest Downloads). Under the general tab, click on force fast charge, then apply. After you have done that, place your phone on the charger. You will see it is now detected as AC and if and only if the charger can put out more current than it was previously being limited to (more than 500mA) you will be able to use the additional current.
Good luck have fun.
http://www.incredikernel.com/wp-con...nitor/download.php?id=force_fast_charge.patch
NOTE: You may get a freeze/FC in IncrediControl once in while when toggling the charge. This is being worked on. I figured everyone could deal with a FC here or there to get this out earlier.
Click to expand...
Click to collapse
Looking forward to a dev adding this to their kernel. While we wait, any chance we could get whatever reference kernel you compiled for the people who tested the kernel? I'm dying to try this with pogo pin charging and touchstone mod.

Thanks for your work, added this to latest Trinity test kernel.
IT'll probably make its way into the Trinity thread tomorrow or so, unless the F5ers out it before then.

@chad0989
Wow thanks, cool mod, cant wait to try this!
G

Pushed the fastcharge toggle widget to the market for those who were interested. No more need to open an app to toggle when you can just do it from your homescreen!
https://play.google.com/store/apps/details?id=com.incredicontrol.fastchargewidget

Issue with the market should be straightened out now for anyone who was getting a not compatible message.

The widget should be fixed for you gnex guys, hopefully no more FCs. Sorry about that!

Fast Charge Toggle Widget appears to be working fine with LeanKernel 2.6.0 and CyanogenMod 9 Nightly 20120319 on my Galaxy Nexus.
Thanks!

if i understood correctly, this doesn't produce any plus effect if the output usb port is limited to 500 mv right?
and the output of every standard laptop usb port is only 500mv or i'm wrong?
thanks in advance

Aww, fast charge widget costs :/
Sent from my Galaxy Nexus using xda premium

andQlimax said:
if i understood correctly, this doesn't produce any plus effect if the output usb port is limited to 500 mv right?
and the output of every standard laptop usb port is only 500mv or i'm wrong?
thanks in advance
Click to expand...
Click to collapse
That's correct. Although some will definitely put out more, my laptop puts out ~800. I'm not willing to say I personally recommend charging from a USB port because there is a risk of damaging the port/motherboard, although nobody has ever reported actually damaging it (I do it all the time).

[KERNEL PATCH] Force AC (fast) Charging

This was a pretty big hit with the gnex and nexus s guys so I figure that I would extend it to the aries series phones:
This is for kernel devs only. The patch itself is useless to those who do not/can not compile their own kernel.
This patch allows one to force AC charging for any charger that is detected as USB (e.g. many car chargers) and pull the full current the charger can support. It also provides additional security when connecting to public charging stations because by forcing AC charging, USB/adb data transfers are disabled, protecting your data.
Fast charge can be toggled by issuing:
echo 1 > /sys/kernel/fast_charge/force_fast_charge
and off:
echo 0 > /sys/kernel/fast_charge/force_fast_charge
Some roms (AOKP) have also implemented toggles.
In addition I have created a toggle fast charge widget that may be used to toggle fast charge on and off right from your home screen:
https://play.google.com/store/apps/details?id=com.incredicontrol.fastchargewidget
You may also use IncrediControl (free) to toggle, however it does not fully support the aries series phones so features like voltage control do not work at this time.
https://play.google.com/store/apps/details?id=com.incredicontrol
For the widget (or any fast charge toggle) to work, you MUST be running a kernel that has this patch implemented.
As a good gesture to support a fellow dev, I ask that if you implement the patch into your kernel, please link to my widget as one means to toggle it. You are of course free to provide other ways to toggle it as well if you so desire.
Kernel devs, if you would like to test the widget yourself to confirm its working, and for convenience of testing, please contact me and I will provide you with a copy. You must show that you are a kernel dev though (i.e. link me to your kernel post so I can match your username).
Here you go. Good luck have fun:
http://www.incredikernel.com/wp-con...download.php?id=aries_force_fast_charge.patch

Thank you very much. I already have included it in my latest kernel
Sent from my I9000 running Android 4.03

Can you measure the current value with this feature and without?

Yes thanks derteufel. Already tried it with devil2 kernel. Great work

-ReaL- said:
Can you measure the current value with this feature and without?
Click to expand...
Click to collapse
When it is enabled, the phone detects all chargers as AC and your current draw is dependent on the source you're charging from. For example, if you're charging from a 1A usb source (such as a powered hub, car charger) you should get currents close to that from a wall charger. With it disabled it reverts to the factory detection of charge sources and anything detected as USB is limited to 500mA.

I use the original Vehicle Dock from Samsung (ECS V968) for holding my Phone on the Windshield in Car!
Plugging in my phone normally switches over to Sound redirection (by xcaliburinhand) and charges via 12v Car plug!
The charging isn´t working anymore !!!
Phone directly on 12v car plug: CHARGING !
Phone on USB port: CHARGING !
Phone on Vehicle Dock which is connected to either 12v Car plug or USB port : NOT CHARGING !
Ive tested with other phones (stock firmware) and it works ...so the car dock is not the problem!
Im using WeUI 0.9.8 with Semaphore Kernel 1.0.0
I dont know whether fast charge may be the source of that problem.
any idea ???

sebsch1991 said:
I use the original Vehicle Dock from Samsung (ECS V968) for holding my Phone on the Windshield in Car!
Plugging in my phone normally switches over to Sound redirection (by xcaliburinhand) and charges via 12v Car plug!
The charging isn´t working anymore !!!
Phone directly on 12v car plug: CHARGING !
Phone on USB port: CHARGING !
Phone on Vehicle Dock which is connected to either 12v Car plug or USB port : NOT CHARGING !
Ive tested with other phones (stock firmware) and it works ...so the car dock is not the problem!
Im using WeUI 0.9.8 with Semaphore Kernel 1.0.0
I dont know whether fast charge may be the source of that problem.
any idea ???
Click to expand...
Click to collapse
Semaphore doesn't have fast charge implemented.

Just curious, but is this bad for the battery?

shadehh said:
Just curious, but is this bad for the battery?
Click to expand...
Click to collapse
And second question: how fast does this fast charge charges standard 1500 mah i9000 battery (from around 0% to around 100%) ?

HI!
I'm trying to add the patch to my kernel (Sony Xperia Arc - MSM 7x30 device) but I'm kinda lost when looking at the msm72k_udc.c file.
Can you please help to out? I cant seem to find some of the lines you're deleting in the patch, hence the functions break.
this is the file i'm trying to modify...
This is my first project and i'm not that skilled yet, but i'm learning...
Thanks for the help in advance...

bipbop said:
And second question: how fast does this fast charge charges standard 1500 mah i9000 battery (from around 0% to around 100%) ?
Click to expand...
Click to collapse
shadehh said:
Just curious, but is this bad for the battery?
Click to expand...
Click to collapse
Not bad at all. The phone will not charge any faster than it would on AC charging, therefore its no worse for your battery than charging from an AC charger. I do not believe in increasing the charge current to the phone beyond what the factory specs are.
jimbo77 said:
HI!
I'm trying to add the patch to my kernel (Sony Xperia Arc - MSM 7x30 device) but I'm kinda lost when looking at the msm72k_udc.c file.
Can you please help to out? I cant seem to find some of the lines you're deleting in the patch, hence the functions break.
this is the file i'm trying to modify...
This is my first project and i'm not that skilled yet, but i'm learning...
Thanks for the help in advance...
Click to expand...
Click to collapse
I'm working on a patch for the play / arc. Its taking a bit more work than the aries series phones, PM me and you can test.
I apologize for the delayed responses.

[Q] Galaxy Note 2 - Charge Amperage

Hello - I was wondering if anyone has ever fiddled with the charge amperage of the Note 2. These are all kernel-configurable parameters, and therefore I decided to manipulate them to fit my charging needs. I am running the latest iteration of the Perseus Kernel with Stweaks which gives a multitude of options. Heres what I changed;
Since we all have a stock 2.0A charger:
1. AC CURRENT CHARGE from 1700mAh to 1900mAh (3100mAh * 0.7(coulombs) = 2170mAh limitation)
2. SDP CHARGE CURRENT from 475mAh to 1000mAh (works fine at 1700mAh, but thats only tested on my work computer)
So far so good, USB charging is actually quite fast now, even though it is only at 1000mAh. I will be testing these changes for the rest of the week to see if they have any effect on the discharge rate of the battery. I usually get about 12hrs of heavy use on a complete charge (albeit arbitrary for comparison with someone else's performance) - but I would also be interested in gathering information from others to obtain optimal charging frequencies so that future versions of our favorite kernel's can have these optimal frequencies implemented.
Also, I have confirmed that these new current's are applied and working with "Current Widget"
https://play.google.com/store/apps/details?id=com.manor.currentwidget&hl=en
Happy hunting!

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Hey, good info here.
Any issues so far? Like overheating when charging via ac charger at increased rate?

Please note that if you're using the stock oem cable that came with the phone. That's actually restricting the current flow too your device!!! Only giving you around 1300 mAh output!
I actually switched to a lil shorter and thicker cable and I'm getting 1600-1700 mAh out the stock charger for charging current!!!
And around 1400-1500mAh on my car charger.
And I'm running stock kernel..
But when I was running the kernel you have, I was actually getting a steady 1800 mAh to the phone!!
You can check your current flow with this app here:
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
Just my 2¢®
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4 Beta

the previous posts are correct. I assumed that the kernel would govern the charge amperage. However it is indeed the charger and cabling itself. The stock charger gives me 1100mAh while charging. I am using an HP Touchpad charger which actually gives 1800mAh while charging! So if anyone has that charger lying around, use it! Click on the screenshot for proof.
So A/C charging is 1800mAh
USB Charging is 800mAh - but this vary's with the computer's preference. Ill usually find it charging in between 300 - 500mAh

This is what im getting I used stweaks to make it charge faster
Sent from my SAMSUNG-SGH-I317 using xda premium

Sent from my SAMSUNG-SGH-I317 using xda premium

Stock charger on stock kernel XXDMG1 JB 4.1.2 gives me 1698 mA on my N7100. Confirmed with a friend who has the same model.
I wonder if this is kernel specific or charger cable. I know for a fact that charger cable does play a role. A thicker good quality wire should deliver more amperage.

Bajanman said:
Please note that if you're using the stock oem cable that came with the phone. That's actually restricting the current flow too your device!!! Only giving you around 1300 mAh output!
Click to expand...
Click to collapse
I believe you, but why would Samsung make that mistake?

[APP][ROOT][KT] Fast Charge Toggle widget

I love @ktoonsez kernel I also LOVE his fast charging option. Was using schools computer to charge and was charging at 900 mA love it.
Got tired of going through the app to toggle this. So i made a widget that can be placed on the home screen or the lock screen. Im sorry, the image is hideous. xD wasnt too sure of what to use as an image so bear with me xD
Just install the APK then either on your home screen or your lock screen add a widget and select Fast Charge Toggle. Done. Will prolly work on other kernels with fast charging option but only tested on @ktoonsez kernel

From almost totally dead, it takes me about two hours for a full charge with normal charging.
I've never bothered with tweaking charging settings. How much faster would fast charging accomplish the same thing?

Like the idea, but what does fast charging do ultimately to you're overall battery life and health long-term?
Sent from my SGH-M919 using XDA Premium 4 mobile app

HampTheToker said:
From almost totally dead, it takes me about two hours for a full charge with normal charging.
I've never bothered with tweaking charging settings. How much faster would fast charging accomplish the same thing?
Click to expand...
Click to collapse
The fast charging kernel tweaks are only for USB devices. Like from a computer, stereo unit, cigarette lighter. Not from the wall outlet.
SinCityAtNight said:
Like the idea, but what does fast charging do ultimately to you're overall battery life and health long-term?
Sent from my SGH-M919 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
It has no side effect on the battery. The stock charger has I think like 2a charging power, most computers have only 500mA. Fast charging simply tricks the kernel into thinking it's plugged into a wall outlet and charges at the full power available. The only side affect is that it could ruin the USB port. However after two years of using it I have never seen any issues myself nor have I read any.
Sent from my SGH-M919 using Tapatalk 2

Not my experience. I have to desagree. I always use fast charge and using a wall outlet works better that any other mentioned before. Im not a developer, just a happy user. But works different for me. I can tell what are you saying is not always true for all users.
Sent from my SGH-M919 using xda premium

ToledoG28 said:
Not my experience. I have to desagree. I always use fast charge and using a wall outlet works better that any other mentioned before. Im not a developer, just a happy user. But works different for me. I can tell what are you saying is not always true for all users.
Sent from my SGH-M919 using xda premium
Click to expand...
Click to collapse
According to what I personally saw in the source code and what @ktoonsez said, the fast charging gets ignored when it's an ac charger. Just going off of source code and what the code actually does. Might just be a placebo effect on your end all in all tho fast charging sure is the best thing since sliced bread xD
Sent from my SGH-M919 using Tapatalk 2

elesbb said:
According to what I personally saw in the source code and what @ktoonsez said, the fast charging gets ignored when it's an ac charger. Just going off of source code and what the code actually does. Might just be a placebo effect on your end all in all tho fast charging sure is the best thing since sliced bread xD
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
Why is it that when I charge and use off the charger, my phone gets hot quick. I revoke SU permissions and reboot then my phone is cool so am I doing something wrong. I'm on virginrom2.3
Sent from my GE4.3 M919 using xda premium

MrPapito429 said:
Why is it that when I charge and use off the charger, my phone gets hot quick. I revoke SU permissions and reboot then my phone is cool so am I doing something wrong. I'm on virginrom2.3
Sent from my GE4.3 M919 using xda premium
Click to expand...
Click to collapse
What do you mean? I do not understand at all what you are trying to say..

elesbb said:
What do you mean? I do not understand at all what you are trying to say..
Click to expand...
Click to collapse
When superuser asks permission and I grant it, the phone charges fast, but whether its charging or not, it gets hot very quickly
Sent from my GE4.3 M919 using xda premium

MrPapito429 said:
When superuser asks permission and I grant it, the phone charges fast, but whether its charging or not, it gets hot very quickly
Sent from my GE4.3 M919 using xda premium
Click to expand...
Click to collapse
I have no idea. Nothing is happening until you click on the widget then it executes the code and dies right away. Get a task manager (preferably SystemTuner) and see whats eating your CPU.

Thanks a lot.
I use fast charge a lot and this makes it much easier!
Sent from my SGH-M919 using XDA Premium 4 mobile app

Thank you!! Been looking for something like this...my wall plug for my charger is far in my office so with this I can charge from my computer monitor!!
Sent from my SGH-M919 using XDA Premium HD app

I have a car charger that has a spare USB plug on it. If I use the actual car charger it charges as normal, but when I plug in the white USB cord that came with the phone into the same car charger it definitely charges almost twice as fast. Living proof. I was on a road trip using GPS and LTE while streaming music. While on the car charger it would almost not charge at all, just supplement enough to not drop in percentage. Then, when I switch to the other USB it charges up no problem.. Really works.

Elesbb,
First off, Thank you for making this and sharing it to the community. I have been looking for something just like this. Comes in very handy.
I don't know if you update this anymore, but I was wondering if you could make a choice for different icons for the widget. If not, no big deal, the icon is just a little too cartoon-y for me.
Thank you!

re: charging mod
elesbb said:
The fast charging kernel tweaks are only for USB devices. Like from a computer, stereo unit, cigarette lighter. Not from the wall outlet.
It has no side effect on the battery. The stock charger has I think like 2a charging power, most computers have only 500mA. Fast charging simply tricks the kernel into thinking it's plugged into a wall outlet and charges at the full power available. The only side affect is that it could ruin the USB port. However after two years of using it I have never seen any issues myself nor have I read any.
Sent from my SGH-M919 using Tapatalk 2
Click to expand...
Click to collapse
I just googled "maximum usb milliamp output from a standard computer usb port" and to my
surprise I must have found at least 25 links which I read that deals with this subject.
And all of them specifically point out that a normal laptop or desktop computer's usb port puts
out a maximum of 500 milliamps unless someone has some special usb pci/pcie card installed
inside their home computers, I never seen any that do but it is possible that such a card exists.
So this mod would really not do anything at all, it would not charge faster and it could not hurt
the usb ports of any computer since it cannot change the max. milliamp output of the usb port.
Now if we had some kind of special program which we install in our computers to allow the usb
ports to put out 2amps (2000 milliamps) then it would charge just as fast as our wall AC chargers do.
But modifying anything inside our phones cannot change the fact that it's the computer and it's usb
ports which determines what the maximum amount of milliamps that it can output.
Look at it this way, if you have a 5 gallon gas can you cannot pour 10 gallons of gasoline out of it.

Misterjunky said:
I just googled "maximum usb milliamp output from a standard computer usb port" and to my
surprise I must have found at least 25 links which I read that deals with this subject.
And all of them specifically point out that a normal laptop or desktop computer's usb port puts
out a maximum of 500 milliamps unless someone has some special usb pci/pcie card installed
inside their home computers, I never seen any that do but it is possible that such a card exists.
So this mod would really not do anything at all, it would not charge faster and it could not hurt
the usb ports of any computer since it cannot change the max. milliamp output of the usb port.
Now if we had some kind of special program which we install in our computers to allow the usb
ports to put out 2amps (2000 milliamps) then it would charge just as fast as our wall AC chargers do.
But modifying anything inside our phones cannot change the fact that it's the computer and it's usb
ports which determines what the maximum amount of milliamps that it can output.
Look at it this way, if you have a 5 gallon gas can you cannot pour 10 gallons of gasoline out of it.
Click to expand...
Click to collapse
The maker of this (ktoonsez) stated this in his thread. However, a lot of computers (newer ones) do have higher power outputs to power things like external hard drives, cooling fans... etc. For instance, mine, when paired with the fast charging mod, outputs 700ma but without, stays at 500ma. So while you are correct, there are a lot of computers (especially newer) that do have huger output ratings. This is clearly seen when my external hard drive won't work on my grandfather's dinosaur computer (even his new printer has issues). But plugged into my laptop, it's has no problem.
Also, I believe USB 3.0 has a 1amp output.
Sent from my SGH-M919 using Tapatalk

re: charging mods
elesbb said:
The maker of this (ktoonsez) stated this in his thread. However, a lot of computers (newer ones) do have higher power outputs to power things like external hard drives, cooling fans... etc. For instance, mine, when paired with the fast charging mod, outputs 700ma but without, stays at 500ma. So while you are correct, there are a lot of computers (especially newer) that do have huger output ratings. This is clearly seen when my external hard drive won't work on my grandfather's dinosaur computer (even his new printer has issues). But plugged into my laptop, it's has no problem.
Also, I believe USB 3.0 has a 1amp output.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
You know what, you are just about right, I just did some more googling and found
that the usb 3.0 ports on newer computers do have a greater output than 500milliamps.
They have a maximum of 900milliamps, still no where near the 2000milliamp which
the home charger puts out, but it's close to double of the standard usb 2.0 ports.
I read that many newer computers including mine has a dedicated 3.0 port which stays awake
even if we turn the computer off & it continues charging whatever is plugged into the 3.0 port.
So 900milliamps is a lot better than 500milliamps when comparing usb 2.0 to 3.0 however
current is current, the phone itself cannot distinguish between a 500milliamp or 900milliamp
charging rate, if it gets 900ma it will charge a lot faster than if it only gets 500 milliamps.
All cell phones have a safety feature built into their circuitry which prevents us from charging
the phone at a higher rate than what Samsung specifies by plugging it into a charger which puts
out more than 2amps, if the phone did not have that circuitry it would dramatically shorten the life
of the battery.
That's why Samsung ships 2amp home chargers with their phones and not a 2.5 or a 3amp one.
If this mod which is being discussed here defeats the safety feature in the phone's circuitry which
prevents it from being charged too fast then I would highly advise against installing or using it.
The only time a higher rated battery charger should be used is if we have an extended battery
which was rated at let's say 4200milliamps in which case a 3-4 amp charger would be best.

Misterjunky said:
You know what, you are just about right, I just did some more googling and found
that the usb 3.0 ports on newer computers do have a greater output than 500milliamps.
They have a maximum of 900milliamps, still no where near the 2000milliamp which
the home charger puts out, but it's close to double of the standard usb 2.0 ports.
I read that many newer computers including mine has a dedicated 3.0 port which stays awake
even if we turn the computer off & it continues charging whatever is plugged into the 3.0 port.
So 900milliamps is a lot better than 500milliamps when comparing usb 2.0 to 3.0 however
current is current, the phone itself cannot distinguish between a 500milliamp or 900milliamp
charging rate, if it gets 900ma it will charge a lot faster than if it only gets 500 milliamps.
All cell phones have a safety feature built into their circuitry which prevents us from charging
the phone at a higher rate than what Samsung specifies by plugging it into a charger which puts
out more than 2amps, if the phone did not have that circuitry it would dramatically shorten the life
of the battery.
That's why Samsung ships 2amp home chargers with their phones and not a 2.5 or a 3amp one.
If this mod which is being discussed here defeats the safety feature in the phone's circuitry which
prevents it from being charged too fast then I would highly advise against installing or using it.
The only time a higher rated battery charger should be used is if we have an extended battery
which was rated at let's say 4200milliamps in which case a 3-4 amp charger would be best.
Click to expand...
Click to collapse
It doesn't defeat the security of built in kernel protection. Androids own API has a way to detect if the plug is wall charger or USB. The mod simply tells android OS that the USB charger is an AC charger and to not limit charging to USB levels. That's why USB doesn't work when the mod is enabled. It's no way harmful to the device. Been using it since I've gotten my phone and even back on my s3.
Sent from my SGH-M919 using Tapatalk

elesbb said:
I love @ktoonsez kernel I also LOVE his fast charging option. Was using schools computer to charge and was charging at 900 mA love it.
Got tired of going through the app to toggle this. So i made a widget that can be placed on the home screen or the lock screen. Im sorry, the image is hideous. xD wasnt too sure of what to use as an image so bear with me xD
Just install the APK then either on your home screen or your lock screen add a widget and select Fast Charge Toggle. Done. Will prolly work on other kernels with fast charging option but only tested on @ktoonsez kernel
Click to expand...
Click to collapse
You're right!! The widget is the ugliest thing I've ever seen but it works perfect! Thank you much!!
Sent from my SGH-M919 using xda app-developers app

re: charging milliamps
elesbb said:
It doesn't defeat the security of built in kernel protection. Androids own API has a way to detect if the plug is wall charger or USB. The mod simply tells android OS that the USB charger is an AC charger and to not limit charging to USB levels. That's why USB doesn't work when the mod is enabled. It's no way harmful to the device. Been using it since I've gotten my phone and even back on my s3.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Okay, see what you mean.
Did you know that there are 3 or 4 free apps at the playstore which display the amount of mA
the phone is being charged with at any given time, it also displays the maximum mA that the
charger or usb port can charge. Here are a couple links in case you or anyone is interested:
https://play.google.com/store/apps/details?id=com.abmantis.galaxychargingcurrent.free
https://play.google.com/store/apps/details?id=ccc71.bmw

HTC M9 force AC fastcharge? (with stock kernel, or a kernel recommendation)

Hello, so in theory this should be a sort of straightforward question, but I'm not sure there is a good solution yet. I've found that the M9 is veeeeeery conservative with charge speeds and rating chargers it deems worthy to give it fast charge speeds. With that comes many reputable third-party chargers giving the phone little to no juice, and I would like to override this.
So what I'm looking for is a way to tweak the charge speed allowed manually. On my Google Play Edition S4, this was called fastcharge (not quickcharge, not interested in buying one of those, as every charger I have has more than one usb port and I'd like to keep it that way). It was something that I found on a custom kernel and allowed you to set a max charge speed for both AC and USB charging (with AC being able to be tweaked all the way to 1900mAh).
With all that being said, does anyone know how to allow something like this with the stock kernel? I've seen a couple kernels that advertise this as a feature, but they also all seem to be in beta, and have bugs that aren't squashed yet. I'm on Viper 1.6 if that helps at all, and any help with this would be appreciated!

LeeDroid Kernel v2

and the LeeDroid kernel will work on Viper rom? Have you experienced any problems with it so far (if you're using it)

guyverzero said:
and the LeeDroid kernel will work on Viper rom? Have you experienced any problems with it so far (if you're using it)
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None here and have been using it for some time now. Very snappy, superb battery and very fast boot. Using with insert coin currently and controlling with "adiutor" kernel app. Working flawlessly here

brittoking said:
None here and have been using it for some time now. Very snappy, superb battery and very fast boot. Using with insert coin currently and controlling with "adiutor" kernel app. Working flawlessly here
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Okay then. I'll do a nandroid and give it a try, thanks!

ElementalX is great

It's a shame that you find the HTC One M9 charge rate to be too slow but don't wish to do the only thing that will give impressively fast charging with stock software: obtain a Qualcomm certified fast charge 2.0
The fast charge capability comes from using chargers that use higher voltage than the standard 5 volt.
Higher voltage leads to higher charge current which shortens charge time.
Sent from my HTC One M9 using XDA Free mobile app

guyverzero said:
Hello, so in theory this should be a sort of straightforward question, but I'm not sure there is a good solution yet. I've found that the M9 is veeeeeery conservative with charge speeds and rating chargers it deems worthy to give it fast charge speeds. With that comes many reputable third-party chargers giving the phone little to no juice, and I would like to override this.
So what I'm looking for is a way to tweak the charge speed allowed manually. On my Google Play Edition S4, this was called fastcharge (not quickcharge, not interested in buying one of those, as every charger I have has more than one usb port and I'd like to keep it that way). It was something that I found on a custom kernel and allowed you to set a max charge speed for both AC and USB charging (with AC being able to be tweaked all the way to 1900mAh).
With all that being said, does anyone know how to allow something like this with the stock kernel? I've seen a couple kernels that advertise this as a feature, but they also all seem to be in beta, and have bugs that aren't squashed yet. I'm on Viper 1.6 if that helps at all, and any help with this would be appreciated!
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I think you just need a 2A charger. I get very quick charge time with the Nexus 6 charger.
Why HTC didn't include this is beyond stupid. This thing is capable of charging to full in an hour or less
The thing kernels have is USB fastcharge, which increases the current when connected to a computer USB port.

flar2 said:
I think you just need a 2A charger. I get very quick charge time with the Nexus 6 charger.
Why HTC didn't include this is beyond stupid. This thing is capable of charging to full in an hour or less
The thing kernels have is USB fastcharge, which increases the current when connected to a computer USB port.
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Thing is, I have a ton of chargers that should be able to pull more than 2 amps, and have on other phones. I have an Anker one (with charge detection up to 2.4 a port I believe) and an Aukey one that's the same. Also have the stock HTC and Samsung S4 one, those do seem to pull about 1-1.5 out of it but the third party ones aren't doing anywhere near what they should be (normally getting betweeen 3-800 out of them, topping out at about 1 amp).
And yeah I've found that out about the kernels so far, USB only. I was thinking that based on the reading but I figured I would try. I wonder when/if an AC fast charge will be implemented, or if it even can (not sure how it works with quick charge 2.0 interfaces). My S4 did have the setting for both USB and AC so I was hoping to find the same for this. It's not a huge huge deal, but I would like it if possible. Or if a company could come out with a slightly affordable 4 or 5 port charger with at least one or two QC 2.0 slots that'd be lovely as well.

guyverzero said:
Thing is, I have a ton of chargers that should be able to pull more than 2 amps, and have on other phones. I have an Anker one (with charge detection up to 2.4 a port I believe) and an Aukey one that's the same. Also have the stock HTC and Samsung S4 one, those do seem to pull about 1-1.5 out of it but the third party ones aren't doing anywhere near what they should be (normally getting betweeen 3-800 out of them, topping out at about 1 amp).
And yeah I've found that out about the kernels so far, USB only. I was thinking that based on the reading but I figured I would try. I wonder when/if an AC fast charge will be implemented, or if it even can (not sure how it works with quick charge 2.0 interfaces). My S4 did have the setting for both USB and AC so I was hoping to find the same for this. It's not a huge huge deal, but I would like it if possible. Or if a company could come out with a slightly affordable 4 or 5 port charger with at least one or two QC 2.0 slots that'd be lovely as well.
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There's one on Amazon
It's from a manufacturer called CHOE or CHLOE
It's a 5 port charger with 2 ports capable of quick charge 2.0 and rest of the 3 ports upto 1.5 or 2 amps
It remains for 30ish
Sent from my HTC One M9 using XDA Free mobile app

Yeah they were the first ones to get it and now a few others are too, but 35 is still just a liiiiiiiittle steep for me to pay. Thanks for looking out though, appreciate it.

What app are you guys using to check your charging speed? I used galaxy charging current on my S4, but it obviously doesn't work on this device. I've tried a few from the play store but nothing seems reliable.

lordcheeto03 said:
What app are you guys using to check your charging speed? I used galaxy charging current on my S4, but it obviously doesn't work on this device. I've tried a few from the play store but nothing seems reliable.
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Ampere is good. It had a hard time reading an octacore on a fast charger (one of those two was giving it issues) at first but recent updates seem to have sorted it out.