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
Related
My device charges very slowly if the display is off. If the display is on it does not charge at all.
I've installed the Samsung drivers from the website. Is anyone else able to charge their device via USB? I need to know if I should exchange mine.
Sent from my SGH-T989 using XDA App
I was able to charge my sgs2 yesterday at work through the usb port. It might be the phone, or maybe the usb port you are trying to use doesn't have enough juice to charge the phone? have you tried another usb port on the computer?
usb will always charge really slow compared to an wall outlet
Yes I have tried multiple ports, computers, and cables. Oh well, I guess I'll live with it.
Sent from my SGH-T989 using XDA App
+1
dimitrie said:
usb will always charge really slow compared to an wall outlet
Click to expand...
Click to collapse
what he said
if you want fast charging, do it from a wall outlet
jasontx said:
My device charges very slowly if the display is off. If the display is on it does not charge at all.
I've installed the Samsung drivers from the website. Is anyone else able to charge their device via USB? I need to know if I should exchange mine.
Sent from my SGH-T989 using XDA App
Click to expand...
Click to collapse
USB supplies max 500mA. Is probably half what the wall charger is giving you. Nexus S is only 750. My guess gsII is 1000 (1A). iPad charger is 2A.
Edit: no a higher power one than the stock charger won't charge the phone faster in a noticeable way. Charging circuits in remotely modern phones limit current to that safe max. If they don't you're probably risking damaging your phone.
Sent from my Nexus S using Tapatalk
I understand that the USB on the computer is weaker. I was surprised to see that when the phone was connected to the computer, screen on, and streaming music that my battery was actually reducing slowly. I would expect the opposite and this behavior seems abnormal.
Sent from my SGH-T989 using XDA App
that's exactly the reason why in car i use the 2A charger (2000 mAh), and in house i use 1000 mAh wall charger
if i leave it at the computer USB charging, i've to keep it iddle for it to charge after like... 4+ hours
that's usually what i do at the work place, so i keep the battery topped up, for when i need to jump back in the road
as long as you have WiFi on, or 3G/4G on, or if the CPU is in high activity, you'll never see the charge ever reaching the battery.
i always keep a spare wall charger at the office as well for times when i need a quick charge
Thanks for the input everyone! I'm glad it's not defective cause I love this phone!
Sent from my SGH-T989 using XDA App
My issue is a little different but decided against another thread. My phone will not charge with any other cable. Has to be pluged in to oem cable. I left it all night on my old phones charger and woke up with it almost dead. Plugged into oem it just charges super slow. Should i take it back?
Sent from my SGH-T989 using Tapatalk
Does the other micro USB cable work with other devices? If not, might be a defective cable.
On a side note, who prefers to charge via 500mah vs 1A? I have been charging my phone since day one using my printer, as well as my old Iphone. My battery performance is great! +24 hours on a single charge with moderate browsing 50/50 wifi and 4g. I typically enable the "power save" feature with minimal brightness and 15 sec screen timeout.
I worked on other devices
Sent from my SGH-T989 using Tapatalk
[Q] Charging problem
I have an issue that has popped up today. When charging through PC, the phone (not battery) is getting pretty hot and losing charge. I'm not sure what could be causing it. I stopped all extra processes and turned off the screen. This is not occurring when the phone is off.
Hello I was wondering if there is a mod to have usb fast charge when plugged into the comp. I just came from a Inc and there was a mod flashable through cwm. it was very nice. it charged the phone just as fast as an outlet, if not faster. is there a mod?
thanks
Interesting... I'd be interested in this as well.
Sent from my Galaxy Nexus using Tapatalk
+1 this would be great!
Agreed, awesomeness would ensue.
Sent from my Galaxy Nexus using Tapatalk
the developer behind it for the htc Inc was chad0989
. he made the incredikernels and the incredicontrol app. tried to use incredicontrol app just for fast charging but didnt work since the kernel doesnt support HAVS or SVS. Im on Francos btw
Imoseyon said once any speed charges were done by taking code out that slows it. Nexus doesn't have it in kernel now according to him so not likely.
Sent from my Galaxy Nexus using xda premium
cricketsmoke said:
Imoseyon said once any speed charges were done by taking code out that slows it. Nexus doesn't have it in kernel now according to him so not likely.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Would there be a way to selectively trigger AC mode as opposed to USB mode?
just asked this in the IRC chan and few devs said doing this could mess up your computer system. point of the hack would be to trick the cheap car chargers into giving u the full charge, not the computer.
droidkevlar said:
just asked this in the IRC chan and few devs said doing this could mess up your computer system. point of the hack would be to trick the cheap car chargers into giving u the full charge, not the computer.
Click to expand...
Click to collapse
hmm well i know chad did it and no one that has ever used it had a problem. my computer is fine and so was my phone. il send him a pm and see if he responds
sent him a pm
is it possible to take apart his incredicontrol apk and see how it works that way? its in the market
droidkevlar said:
just asked this in the IRC chan and few devs said doing this could mess up your computer system. point of the hack would be to trick the cheap car chargers into giving u the full charge, not the computer.
Click to expand...
Click to collapse
Not many motherboards have USB ports capable of supplying current in excess of the spec 500mA.
Research modding your (car?) Charger to be detected as AC charger instead of USB.
Sent from my Nexus Prime.
What about a mod that allows the 3 pogo pins to receive more than 500mA(recognized as USB)? That seems ridiculously low and is far more relevant/needed. If you want to charge through the pogo pins you are just SOL.
Moved to General.
morfic said:
Not many motherboards have USB ports capable of supplying current in excess of the spec 500mA.
Research modding your (car?) Charger to be detected as AC charger instead of USB.
Sent from my Nexus Prime.
Click to expand...
Click to collapse
I haven't seen a device that can't do 1A over USB in like a decade.
Hell, even non-PCs have no problems with it. I've done it off a Wii before just for fun.
A lot of newer motherboards can even do 2A over USB (to charge iPads). Most ASUS boards in the past 2-3 years have this as an advertised feature (asus ai charger).
Very interested in this actually. Not so much for USB/AC charging on a computer, but for MHL AC charging.
With the current MHL adapters (even when plugged into an AC outlet), the Gnex reports USB charging. To make maters worse, the screen does not shut off on the Gnex. After an hour or two your battery will die. 500ma is just not enough.
The MHL spec says that 500ma is the charging spec. However, I tweeted with Tim Wong:
http://twitter.com/WongTim
He is the president of the MHL association and he said 500MA is the minimum, not the maximum. My quess is that the Gnex won't try to draw more than 500MA since the data pins can't be shorted on the MHL connector.
I think the MHL adapter will provide for more current, just like most laptops and desktops.
With this mod, it would be nice to tell the Gnex to AC charge. Tim suggest that the phone should not draw more than safely required so long as the voltage doesn't drop on the MHL adapter/MHL tv.
I think the Gnex, by design looks for the shorted data pins and doesn't try to push the envelope as far as monitoring the voltage drop on a USB detected power source.
I recall reading about some smoking/dead phones from fast charging mods. Thanks but no thanks.
sruel3216 said:
Hello I was wondering if there is a mod to have usb fast charge when plugged into the comp. I just came from a Inc and there was a mod flashable through cwm. it was very nice. it charged the phone just as fast as an outlet, if not faster. is there a mod?
thanks
Click to expand...
Click to collapse
I came at this problem from a different angle and accidentally found a solution for you. I have an iPad and it wouldnt charge from my PC so did some research and came up with this:
http://event.asus.com/mb/2010/ai_charger/
Its a free driver from asus that increases the max amp on USB bus. Supports most mobos and works awesome on my PC and dell laptop, I can now charge the iPad on there.
It also has the benefit of fast charging of my Nexus. Double win.
EDIT: Ignore the ****ty site design, it looks terrible but does as it says
TheBishopOfSoho said:
I came at this problem from a different angle and accidentally found a solution for you. I have an iPad and it wouldnt charge from my PC so did some research and came up with this:
http://event.asus.com/mb/2010/ai_charger/
Its a free driver from asus that increases the max amp on USB bus. Supports most mobos and works awesome on my PC and dell laptop, I can now charge the iPad on there.
It also has the benefit of fast charging of my Nexus. Double win.
EDIT: Ignore the ****ty site design, it looks terrible but does as it says
Click to expand...
Click to collapse
Just installed and will give it a go. Wish me luck people.
Edit: Didn't work for me. Same charging speed with and without it.
Here is a pm back from chad:
I'll look into it and see if I can come up with something for the gnex also. I do not plan to release a kernel, but possibly I could provide a patch.
Can you get me a kmsg (/proc/kmsg) while you plug your phone into an AC source, and then a USB source?
adb shell "cat /proc/kmsg"
Also a log of the power draw while connected to USB and to AC
Thanks
I have a few questions about fast charging. You can explain using chemistry/physics jargon if you wish as I do understand some parts. So to my understanding, fast charging is basically allowing from electrons to be pushed into the battery (or onto the lithium to convert them to ions so they hold a negative charge). Through programming (using AOKP rom), the device will allow more current or electrons to run through the device and onto the battery (electrodes to be more exact)? If that is the case, wouldn't this cause the battery to be damaged as the chemical reaction is sped up (ie other chemical reactions with the lithium causing them to be neutral or damaging the electrodes)? I've read around that fast charging on the galaxy nexus (hence the post here) is actually safe. Is that because the programmers increased the current above the original but to a point where there is insignificant damage? This is what I understood from some googling.
Another question is that this requires special kernels (or custom kernels) or reprogramming to work. However, AOKP is a ROM where it allows you to have the fast charge option with the original kernel. Does it mean the programming in AOKP is sufficient or do I need to switch a ROM? In either case, does franco's kernel support this option? Or is it the ROM that can control the fast charging without the kernel? Either way I'm currently using franco.
It doesn't change anything. This phone has 2 charge modes, AC charging at 1 amp and usb charging at 0.5 amps. That just enables AC 1 amp charging on a usb plug that can handle it, nothing more. Its not changing any characteristic with charging.
RogerPodacter said:
It doesn't change anything. This phone has 2 charge modes, AC charging at 1 amp and usb charging at 0.5 amps. That just enables AC 1 amp charging on a usb plug that can handle it, nothing more. Its not changing any characteristic with charging.
Click to expand...
Click to collapse
And to reiterate...
All it does is trick your phone into thinking it's plugged into the stock AC charger.
Nothing more. So it's still only pulling how much (from usb) as it normally would from an AC charger.
Guys, I have another question. Is it possible to disable USB charging?
I plug my phone to my laptop. When I'm not plugged-in, it drains my laptop battery. This damages my laptop battery. I've replaced two already.
dh33r4j said:
Guys, I have another question. Is it possible to disable USB charging?
I plug my phone to my laptop. When I'm not plugged-in, it drains my laptop battery. This damages my laptop battery. I've replaced two already.
Click to expand...
Click to collapse
Drain your laptop battery: yes
Damage your laptop battery: no
Its a normal usb function of your pc. anything you plug into your usb port will draw current from your laptop battery. batteries are designed to source current. that is their job.
---------- Post added at 09:28 AM ---------- Previous post was at 09:26 AM ----------
Can someone explain how this works on the PC side? I have my phone plugged into my PC and battery monitor widget reports that I'm drawing 1050mA. Great, but I thought USB ports were limited to 500mA by the PC itself?
marsy00 said:
Drain your laptop battery: yes
Damage your laptop battery: no
Its a normal usb function of your pc. anything you plug into your usb port will draw current from your laptop battery. batteries are designed to source current. that is their job.
---------- Post added at 09:28 AM ---------- Previous post was at 09:26 AM ----------
Can someone explain how this works on the PC side? I have my phone plugged into my PC and battery monitor widget reports that I'm drawing 1050mA. Great, but I thought USB ports were limited to 500mA by the PC itself?
Click to expand...
Click to collapse
That means your PC has double the amps on its USB ports/ your plugged into one of the double power USB ports
Sent from my Nexus S using xda app-developers app
thanks for the explanation
What happens if you plug the phone into a 2 amp charger, say the note 2's charger? Will it wreck the phone or just not accept the extra amperage??
I've read the same explanation, but I still dunno why the CM team wouldn't make it possible to use fast charge with their kernels
mattyhank said:
What happens if you plug the phone into a 2 amp charger, say the note 2's charger? Will it wreck the phone or just not accept the extra amperage??
Click to expand...
Click to collapse
If you plug the phone into a 2 amp charger, it will still charge at 1 amp.
Sent from my Nexus 7 using Tapatalk HD
pguizeline said:
I've read the same explanation, but I still dunno why the CM team wouldn't make it possible to use fast charge with their kernels
Click to expand...
Click to collapse
Because they chose so? I never used it. Always treasured my USB port... Still do.
Sent from my Nexus
Depends on the kernel
Sent from my Galaxy Nexus using Tapatalk 2
Pc wont recognize my G.Nex after I disabled fast charge
I turned fast charge OFF. And rebooted. But pc wont recognize my phone :/
ming3r said:
So...how does fast charge work then? The kernel then tells the device to pull down at 1A instead of 500mA, right?
Click to expand...
Click to collapse
RogerPodacter said:
It doesn't change anything. This phone has 2 charge modes, AC charging at 1 amp and usb charging at 0.5 amps. That just enables AC 1 amp charging on a usb plug that can handle it, nothing more. Its not changing any characteristic with charging.
Click to expand...
Click to collapse
Sent from my SGS3 using Xparent blue Tapatalk
Just got my Galaxy Nexus and everything is rosey and wonderful (simply using stock jelly bean for now), until suddenly i see that I can't even use 3g internet for long periods - *even with it being charged by my macbook air*!!.......
Do some kind fellow XDAers have any suggestions for how I can improve the situation?
Are there some cables that are better than others for charging - maybe a shorter one rather than longer, one with extra pins in it or something, specific brand? Is it that the macbook air isn't high wattage enough of a computer to reliably supply a battery-sucking HSPA chip in the nexus???
My MBA itself was ALSO plugged in at the power and it was in full power mode afaik. also it's windows bootcamp on the mba, don't know if that makes a difference.
Anyway Is there a specific USB charger that would be recommended? some high grade one to guarantee best charging power?
But I can't always be at a wall charger when doing a bit hspa session on my phone. it might be the train. and the laptop is the only power source with which to keep the juice up. (well try anyway :/)
I'll be upgrading to the retina macbook pro anyway soon, maybe that will improve things?
is there some windows app that allows you to regulate usb port power and keep it at a constant high level? (if this is even scientifically correct the way I'm describing things).....
Thanks
USB charging is fairly weak and slow. Some custom Roms have a fast charge option, not sure how much it would help though. You'll have to let someone else chime in who has more knowledge on the fast charge option.
Sent from my Galaxy Nexus using xda premium
I don't think there is enough power from the air to power your phone enough. You could try installing a kernel with fast USB charging like trinity.
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Get a 1amp AC charger
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Its likely that the ports on you air aren't able to put out enough power to actually charge the phone. I have an air as well and my phone charges VERY slowly when connected to it.
I would recommend buying a longer usb to micro usb cable.
I got a 6ft one from www.monoprice.com. Good price and solid quality.
AlexWekell said:
Get a 1amp AC charger
Sent from my Galaxy Nexus using xda app-developers app
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Won't do any good if he needs the air to charge in certain situations. I agree that the MacBook just isn't able to push enough to keep up.
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fast charge option with kernel is best idea as mentioned above
Try to use AC Charger instead of USB. That's the root cause. The maximum power of USB is only 500mA, but the minimum of AC Charger is 1000mA.
BTW, that's not the HSPA's fault. When I play games on GNex which means the screen keep on, the USB charging can't catch up with it. You can see the lossing of power, 5%, 4%, 3%, 2%, 1% and .....
I have this problem also. USB charging takes a hell lot of time and hence I use the wall charger to charge it
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USB 2.0 puts out a maximum of 500mA, with line loss etc it'll be more like 400. That's barely enough to charge the phone if you're using it. Charge it off the wall with a 1A or 2A charger.
That being said, my late 2008 MacBook Pro 13" charges my GNex just fine off of USB.
The latest model MacBook Airs and Pros will help a little because they have USB 3.0, which charges at 750mA (or thereabouts). Still, if you want a fast charge just use the included 1A charger or buy a 2A charger online.
This is normal, USB only charges at 500 mA, ac charges at 1000 mA. so its possible to pull more than it can charge. Use a kernel and enable USB fast charge and it will use ac mode on USB, but only if your USB connection can output higher than 500. So be careful.
tried a couple different kernels. same result. do I need to use a different charger? maybe fast/quick charge? don't know how to enable it.
currently on pa 2.53 and air kernel r5
thanks
ramos247 said:
tried a couple different kernels. same result. do I need to use a different charger? maybe fast/quick charge? don't know how to enable it.
currently on pa 2.53 and air kernel r5
thanks
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I bet your charger is only putting out 500ma
instead of using a usb plug charger use a stand alone charger (also called a wall wart) they do charge faster.
ramos247 said:
tried a couple different kernels. same result. do I need to use a different charger? maybe fast/quick charge? don't know how to enable it.
currently on pa 2.53 and air kernel r5
thanks
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That's normal, sometimes when I play 3d online games while overclocking CPU and gpu , the power consumption will even be larger than 1000mv(household charging voltage), and the phone will provide an alert about "your phone is not charging, please close the applications "
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it's not a usb charger. this is in my vehicle and after a 30 minute ride I lose 5-8 percent in battery.
if it is using to much then is there a work around with a room or kernel or charger?
ramos247 said:
it's not a usb charger. this is in my vehicle and after a 30 minute ride I lose 5-8 percent in battery.
if it is using to much then is there a work around with a room or kernel or charger?
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Most care chargers are 750 mA, the Galaxy nexus requires a 1A charger. I would double check the amp output on your charger and if it's not up to snuff, get a new one.. I highly recommend the iPad2 chargers (2.1 amp), just use your own cable.
now that is done information I can do something. thanks for the input. wonder if they have them in car chargers?
ramos247 said:
now that is done information I can do something. thanks for the input. wonder if they have them in car chargers?
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this is what i use:
http://www.belkin.com/us/p/P-F8Z689
Edit:
Also check your phone when charging, it should say "AC charging" if it's "USB Charging" then the phone itself is limiting the charging to .5 amps.
I'll keep that in mind. I'm too much of a rush. I'm going off roading on Saturday and don't have enough time to get it delivered. I'll be passing by best buy after work today
I'm guessing this I'd while in the car. I would look for a better car charger. I got a rocket fish one from best buy. Seems to be 1000mA
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Are you leaving the screen on too? That will definitely have an impact. Also I notice on longer car rides when I'm pushing my phone (i.e. streaming plus nav, etc.) it will overheat and stop charging at some point. I tend to leave the screen off while driving unless I absolutely need it.
so I got that Belkin 2.1 charger and it worked. didn't have to find a charger cord, just used the stock cord. I'm happy
ramos247 said:
so I got that Belkin 2.1 charger and it worked. didn't have to find a charger cord, just used the stock cord. I'm happy
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Glad it worked out.
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definitely sounds like you need a bigger charger greater than 500mA. my 1000mA gps charger with micro usb adapter does a good job with streaming and gps on.