Database Users

[Q] How to enable USB fast charge on the nexus 4?

Is the nexus 4 capable of fast charging the battery via USB? I tried different kernels/ROMs, but the toggle is not working and a search on xda didn't answer my question.

stivy73 said:
Is the nexus 4 capable of fast charging the battery via USB? I tried different kernels/ROMs, but the toggle is not working and a search on xda didn't answer my question.
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It is capable, for example franco kernel now supports enabling it from his kernel app. Some of them requires a little more work where you have to enable it by writing to a file. Just depends on what Kernel your on.

ibegary said:
It is capable, for example franco kernel now supports enabling it from his kernel app. Some of them requires a little more work where you have to enable it by writing to a file. Just depends on what Kernel your on.
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I've tried it.. I'm on Franco Kernel, tried enabling it through his app, but no luck
I also read it somewhere that people are getting problems using franko's app for enabling fast charge

u4atharva said:
I've tried it.. I'm on Franco Kernel, tried enabling it through his app, but no luck
I also read it somewhere that people are getting problems using franko's app for enabling fast charge
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Once you enable it you have unplug and plug in the cable. The fast charge only works when you're charging it on your computer and any USB port besides the wall outlet. When you do have fast charge enabled, the battery stats should read "XX% Charging (AC)" if fast charge is not enabled the parentheses should be (USB).
Sent from my Nexus 4 using Tapatalk 2

I actually have a question that may be off topic. Does the charging time matter whether you are using a USB 3.0 cable rather than a USB 2.0 cable or it doesn't matter cause the charging power depends on the adapter you use? Any chance that would help with Franco kernel?
Sent from my awesome Neo Armstrong Cyclone Jet Armstrong Nexus⁴ via Tapatalk

Kendaihou said:
I actually have a question that may be off topic. Does the charging time matter whether you are using a USB 3.0 cable rather than a USB 2.0 cable or it doesn't matter cause the charging power depends on the adapter you use? Any chance that would help with Franco kernel?
Sent from my awesome Neo Armstrong Cyclone Jet Armstrong Nexus⁴ via Tapatalk
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It doesn't matter. The Nexus 4's charging port will draw the amount of power it needs and that's it. USB 2.0 and 3.0 are just data transfer speeds. No relation in charging devices.

scream4cheese said:
It doesn't matter. The Nexus 4's charging port will draw the amount of power it needs and that's it. USB 2.0 and 3.0 are just data transfer speeds. No relation in charging devices.
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And usually it'll draw lower and lower as it gets closer to full charge (ie: if you're at 20% you're more likely to pull 800mA off a 2.1A charger than at 75% and up [which tends to be around 500-600]), also factoring in the actual drain of the phone being on. The phone is pretty smart about not risking to overcharge itself.

Works perfectly with Franco kernel

scream4cheese said:
Once you enable it you have unplug and plug in the cable. The fast charge only works when you're charging it on your computer and any USB port besides the wall outlet. When you do have fast charge enabled, the battery stats should read "XX% Charging (AC)" if fast charge is not enabled the parentheses should be (USB).
Sent from my Nexus 4 using Tapatalk 2
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Thanks man, that actually solved my problem

[Q] fast charge kernel

I must be doing something wrong, but can't figure out what
I wanted to enable fast charge, cause my device drains more battery than it charges, I installed the "fast charge" app from the play store, but it always says my kernel is unsupported.
I've already tried these kernels:
-franco (franco kernel updater)
-fugumod (fugumod updater)
-trinity (trinity kernel toolkit)
-faux (fauxClock)
-timur
and I've searched in each app for a place to switch it on but couldn't find it anywhere.
I'm running cyanogenmod 10.1
the tablet is rooted and unlocked.
anyone any idea what could be the problem?
thanks for your time!

Give NCX Kernel a go, I'm nearly 100% sure (99.9999%) that has fastcharge enabled.

Wilks3y said:
Give NCX Kernel a go, I'm nearly 100% sure (99.9999%) that has fastcharge enabled.
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so far, I've been unable to find a zip with that NCX kernel, so I could flash it, can you provide me with a link or something?
I only find .img files, and I'm unsure what I have to do with them :s

Don't waste your time. If you tread the reviews, your problem is common with that app. Download Trickster Mod and use that asp.
Also, fast charge isn't going to have any effect if you're plugged into an ac outlet.
Sent from my Nexus 7 using Tapatalk HD

Like najaboy said, fast charge has no effect using an ac charger. Only speeds up charging if your charging via USB.
Sent from my Nexus 7 using xda premium

Does fast charge via USB even exist for the nexus 7, because so far this seems like some sort of vapourware joke that doesn't exist.
My device is shot, the headphone jack has gone bad, and now regardless of what I do I will always get charging from USB. It won't connect to the PC, and won't power devices from an otg cable, I even made a fast charge usb cable that tricks the device into thinking its an ac power source..... It works with everything but this, so its safe to assume that if indeed there is no fast charge I will take great pleasure in smashing this to bits.
Has to be up there with the first generation Xbox 360 as one of the worst build quality devices ever made.

95Z28 said:
Like najaboy said, fast charge has no effect using an ac charger. Only speeds up charging if your charging via USB.
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And even then only if the active USB device (e.g. powered hub) is also designed to not current clamp or fault-open at currents above 500 mA. It takes two to tango.
Even when it does work, it's nowhere near as fast as a 2A AC adapter, btw.

USB 3 can output 900mA
Sent from my Nexus 7 using xda app-developers app

Any change to resolve this issue?
I have a 2A usb car charger, but is I use GPS programs (like waze) , battery drain in too high , and charging current is not enough.
Any Fast Charge supporting kernel could be the solution.
It worked very well in my previous Galaxy Nexus phone.
Any idea?

spidertop said:
Any change to resolve this issue?
I have a 2A usb car charger, but is I use GPS programs (like waze) , battery drain in too high , and charging current is not enough.
Any Fast Charge supporting kernel could be the solution.
It worked very well in my previous Galaxy Nexus phone.
Any idea?
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A kernel with fast charge is inapplicable to your situation. You simply need ausb cable that had the d+ and d- pins shorted.
Sent from my Nexus 7 using Tapatalk HD

[Q] any way to enable fast charge?

as in title...there is any way to let the charge go faster when plugged in a pc usb? i remember that for my old hd2 there was something but really dont know what was that

Had on a second a pc/laptop usb port will only supply between 500-1000ma , when the S4 charger can supply over 2000ma, so you are not going to get fast charging from a pc/laptop
John.

That is a feature that is in the kernel. Ktoonsez kernel is awesome and has that feature amongst mammy others. It all depends on your device though, which s4 are you using?

I have gt 9505 with foxhound rom with adam kernel
I know usb pc has lower Power but i think it cam be faster than now...mostly game i play drain much more power than pc can recharge. ..had same problem with hd2 and solved with fast charge who disable data usb connection...probably i dont remember everything but was working great
Sent from my GT-I9505 using xda app-developers app

USB fast charge, how to enable?

Im not sure if anyone would be familiar with this, but on my samsung galaxy nexus there was an option that was universal on all kernels called "USB fast charge"
which basically all it did was cancel out the support of file transfer while connected through USB, but in return gave much higher charging speeds through USB. With it enabled my galaxy nexus would charge almost 4x faster.
Is there an option for this on the note 3? I have not rooted yet, but will in the next few days. I understand its up to the kernel dev's and whatnot to implement it in, but is this feature available on the note 3?

We can't flash kernels
Sent from my SM-N900V using xda app-developers app

lol, welp........after a few minutes googling...
bootloader locked....
oh well, i guess it will be nice not flashing stuff everyday compared to my nexus.

Kancerstick said:
Im not sure if anyone would be familiar with this, but on my samsung galaxy nexus there was an option that was universal on all kernels called "USB fast charge"
which basically all it did was cancel out the support of file transfer while connected through USB, but in return gave much higher charging speeds through USB. With it enabled my galaxy nexus would charge almost 4x faster.
Is there an option for this on the note 3? I have not rooted yet, but will in the next few days. I understand its up to the kernel dev's and whatnot to implement it in, but is this feature available on the note 3?
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How to enable posting in the right forums Jk. But seriously, try to post in the right forums next time

Kancerstick said:
lol, welp........after a few minutes googling...
bootloader locked.....thats fuggin gay.
oh well, i guess it will be nice not flashing stuff everyday compared to my nexus.
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Bootloader Locked, can't flash Kernels, but the Note3 charges pretty damn fast using the Stock Cable plugged into an A/C outlet.
Total Segue here, but as a Brother to two gay siblings and an Uncle to a gay nephew, can we refrain from using the therm "that's so gay" when it comes to something derogatory?

tdetroit said:
Bootloader Locked, can't flash Kernels, but the Note3 charges pretty damn fast using the Stock Cable plugged into an A/C outlet.
Total Segue here, but as a Brother to two gay siblings and an Uncle to a gay nephew, can we refrain from using the therm "that's so gay" when it comes to something derogatory?
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sorry bout that, im pretty sensitive to that in real life considering i have tons of gay friends. Message boards should be no different, my fault. I edited my post.

Kancerstick said:
sorry bout that, im pretty sensitive to that in real life considering i have tons of gay friends. Message boards should be no different, my fault. I edited my post.
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Cool. and Thanks.
Back to the original post....how fast/slow does your phone (re)charge? Mine goes from 40% to full in an hour or less.

tdetroit said:
Cool. and Thanks.
Back to the original post....how fast/slow does your phone (re)charge? Mine goes from 40% to full in an hour or less.
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with the wall charger the note 3 came with, reallly fast. Just as fast as you stated. But through USB, slow as molasses, probably 1% every 5 minutes. which is why i was wondering if the USB fast charge option was available. On my galaxy nexus charging through USB, it was just as slow. With USB fast charge turned on, it charged as fast as a wall charger through USB.

Kancerstick said:
with the wall charger the note 3 came with, reallly fast. Just as fast as you stated. But through USB, slow as molasses, probably 1% every 5 minutes. which is why i was wondering if the USB fast charge option was available. On my galaxy nexus charging through USB, it was just as slow. With USB fast charge turned on, it charged as fast as a wall charger through USB.
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Hmmmmm, odd. Does your machine have USB3 ports? I know that's supposed to be good for only speedy file transfers, but I wonder if it also speeds up Charging? I've just never noticed slow trickle charging from my computer. The only time it's slow is when I use a regular USB2 cable in the car....then it's slower than molasses in January.

tdetroit said:
Hmmmmm, odd. Does your machine have USB3 ports? I know that's supposed to be good for only speedy file transfers, but I wonder if it also speeds up Charging? I've just never noticed slow trickle charging from my computer. The only time it's slow is when I use a regular USB2 cable in the car....then it's slower than molasses in January.
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I do have USB3 available on my computer, but havnt tried it for charging yet. So far my USB charging has been done through my car which is some random usb 2 cable. Which now that i think about it i believe its only a 1 amp charger in my car, if that. It was enough for my galaxy nexus but probably not so for the note 3. The note 3 wall charger is i believe 2.0 amps?
Im wondering if charge rates matter through usb2 / 3.
If i get a 2.0 amp car charger and use it with a usb 2 cable, will i still achieve 2 amp charging speed? Or for the note 3, i have to use a usb 3 cable?

Kancerstick said:
I do have USB3 available on my computer, but havnt tried it for charging yet. So far my USB charging has been done through my car which is some random usb 2 cable. Which now that i think about it i believe its only a 1 amp charger in my car, if that. It was enough for my galaxy nexus but probably not so for the note 3. The note 3 wall charger is i believe 2.0 amps?
Im wondering if charge rates matter through usb2 / 3.
If i get a 2.0 amp car charger and use it with a usb 2 cable, will i still achieve 2 amp charging speed? Or for the note 3, i have to use a usb 3 cable?
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Not sure. My Laptop has a USB port that charges devices even when the Laptop is turned off, but I do know that my Nexus required less juice to charge up, where the N3 doesn't keep up when I charge it in the car, so I think it's the 1 / 2amp question

[Q] Nex4 shows [USB] charging on all chargers

PROBLEM SOLVED
for some reason my new nexus 4 charges on USB mode no matter what charger i use, now here is the weird part...
i have 2 motherboards, one from a previous nexus 4 and when i drop the motherboard into the phone without changing usb port or anything, it will show it is charging on AC for the proper chargers (Wall chargers).
can the motherboard really control the charging rate? i thought it would be a usb port problem, but nope, works fine on my older motherboard which has Carbon 4.3.1 , my newer one is running Carbon 4.4 , ill try to make a nandroid and flash another rom to check if its just rom (which wouldnt make much sense but whatevs).
any input, tips, or advice would be awesome
btw, im using the default battery option in the settings app to check if it is USB or AC , so if anyone knows any apps to confirm rate that would be cool too
UPDATE: tried CM 11, yep it was my rom (carbon 4.4) and or kernel (Faux U31), i wonder why though

SneakyGuyDavid said:
for some reason my new nexus 4 charges on USB mode no matter what charger i use, now here is the weird part...
i have 2 motherboards, one from a previous nexus 4 and when i drop the motherboard into the phone without changing usb port or anything, it will show it is charging on AC for the proper chargers (Wall chargers).
can the motherboard really control the charging rate? i thought it would be a usb port problem, but nope, works fine on my older motherboard which has Carbon 4.3.1 , my newer one is running Carbon 4.4 , ill try to make a nandroid and flash another rom to check if its just rom (which wouldnt make much sense but whatevs).
any input, tips, or advice would be awesome
btw, im using the default battery option in the settings app to check if it is USB or AC , so if anyone knows any apps to confirm rate that would be cool too
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+1 I get that all the time and I use the default nexus 4 charger they came with it. I have to enable force fast charge a lot of times
Sent from my Nexus 4 using Tapatalk

Zehlek said:
+1 I get that all the time and I use the default nexus 4 charger they came with it. I have to enable force fast charge a lot of times
Sent from my Nexus 4 using Tapatalk
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yeah i've tried enabling fastcharge on faux but it doesnt seem to do anything really, something's probably up with carbon 4.4 its still new and the carbon team's server is down right now so there wont be new builds till atleast this weekend, i guess i can suck it up intill i figure out my problem its only charging which normally i only do while i sleep, if i switch to any other rom it has to be feature filled like carbon, carbon basically has a little bit of everything (before 4.4 update which broke compatibilty) thats why i like it.
EDIT: Redownloaded Carbon 4.4 (latest nightlty is 2/5/14 as of now) and i Didn't flash faux and AC works perfect... im slowly but surely solving my own problem, im gonna redownload faux and see if that is what is causing the USB speed chatting
Update: found the solution to my problem, it was faux kernel, but in the sense that if you leave fast charging on FORCE AC it won't do ****, it will actually then make everything charge at USB speed, so put it on disabled like I needed to do.

Mh but i had the same problem, but on stock!
It turned out that my ac to usb adapter was like too weak for the phone or whatever, amyways if i use the adapter of my panasonic digicam, it works just fine
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Phone : My new Nexus 4!
OS:
Pure KitKat 4.4.2 stock, no root, no mods (but only for the first time ;D)
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