[Q] Fast Charge do really work? - Samsung Galaxy Nexus

Hi guys,
just wondering if fast charging do really work. I turn on the FastChrg but I think charging time is almost the same when FastChrg is ON or OFF. Any idea?
I am running AOKP M5 + Faux kernel. Thanks in advance!

jesongaudan said:
Hi guys,
just wondering if fast charging do really work. I turn on the FastChrg but I think charging time is almost the same when FastChrg is ON or OFF. Any idea?
I am running AOKP M5 + Faux kernel. Thanks in advance!
Click to expand...
Click to collapse
Fast charge only makes a difference when you are charging via USB, it has no effect on AC charging.
It makes the phone think it is plugged into AC when it is plugged into USB.

nodstuff said:
Fast charge only makes a difference when you are charging via USB, it has no effect on AC charging.
It makes the phone think it is plugged into AC when it is plugged into USB.
Click to expand...
Click to collapse
Thank you!

basically if you have a usb car charger, it'll make that actually charge your phone.

Related

charging question

hey guys, i have a question. i'm using a stock charger for my t-mobile touch pro 2 but everytime i connect the charger it asks if im going to use activesync or disk drive.
right now i'm using the stock rom with win 6.5
any help would be great.
thnx
goodtilltomorrow said:
hey guys, i have a question. i'm using a stock charger for my t-mobile touch pro 2 but everytime i connect the charger it asks if im going to use activesync or disk drive.
right now i'm using the stock rom with win 6.5
any help would be great.
thnx
Click to expand...
Click to collapse
Hi Goodtilltomorrow,
Would like to help, but what is the question?
If you are charging via the USB connection then it will ask you what type of connection you want (whilst also charging).
My solution for charging only, is to select Disk Drive and then to 'safely remove device' using the icon in the system tray.
That way the device is not using any additional power (above normal standby) but is charging from the USB port.
If it's asking about activesync or Disk Drive via a mains power source then I am as confused as you.
Hope this helps.
oh sorry.
i meant to ask, why is it asking where im charging from everytime i connect it to charge from the wall?
im using the stock charger and it never use to ask me where i wanted to use (Activesync or Disk Drive) when i just charged my phone from the wall.
how can i get rid of it doing that?
Does it charge at all? Mine does the same, but doesn't charge at all when the phone is on.
I can only charge it with the ac charger when it is turned of, or turned on using the usb on my laptop...
Isard said:
Does it charge at all? Mine does the same, but doesn't charge at all when the phone is on.
I can only charge it with the ac charger when it is turned of, or turned on using the usb on my laptop...
Click to expand...
Click to collapse
yeah my charges. its charges even with the phone on.
i wonder why it does that!
every so often my charger does the same.. some pins must be pressed somewhere in the usb input. I haven't seen it negatively effect the phone in any way though.
Aaron McCarthy said:
every so often my charger does the same.. some pins must be pressed somewhere in the usb input. I haven't seen it negatively effect the phone in any way though.
Click to expand...
Click to collapse
this happens all the time though now.
no, it charges it which is fine but i hate it opening having to turn the screen off again and closing internet sharing everytime i want to charge it

[Q] How does fast charging work?

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

[Q] N7100 slow charging on PC

Hi everyone
Ok my phone charges on samsung charger with my nokia n8 usb cable is fine and faster then default cabe.
But when i connect to my pc with usb cable it charges but very slow. i pluged it for full night but it charges only 45% with my usb cable i used in charger in usb 3.0 port.
any idea whats happening
and im charging it on USB port of pc, Coz one of my friend borrowed my charger without cable for a week.
and now i found out the prob.
Please suggest something.
Hey buddy. ..This isnt an issue at all....The standard note 2 charger is set at 2Amps...which suggests considerably fast charging....100% in about 4 hours. ..but if you are charging just from the usb using the pc port....It will definitely charge slower...because the phone is built so that the kernel will prevent excess power from a pc....After all. ...We plug the phone to transfer data....After all nd not to really charge....so it will be very slow...This is normal....It takes about 9 hours to reach 100% if I'm not mistaken....hope this helps
sadeshmagic said:
Hey buddy. ..This isnt an issue at all....The standard note 2 charger is set at 2Amps...which suggests considerably fast charging....100% in about 4 hours. ..but if you are charging just from the usb using the pc port....It will definitely charge slower...because the phone is built so that the kernel will prevent excess power from a pc....After all. ...We plug the phone to transfer data....After all nd not to really charge....so it will be very slow...This is normal....It takes about 9 hours to reach 100% if I'm not mistaken....hope this helps
Click to expand...
Click to collapse
Thumbs up... just wanna hear that. for the sattisfaction ...
THANKS
and think it will take longer then 9Hrs :good:

auto power on when charging?

is there a way to have the tablet automatically power on if the battery dies? or to force a reset without getting to the power button?
i use my nexus 7 as a in dash h/u and atm have the fiberglass mold with a small hole for a needle or stick to go threw to hit the power buttong when/if it freezes or dies. but i would like to just skip that.
darkmage1991 said:
is there a way to have the tablet automatically power on if the battery dies? or to force a reset without getting to the power button?
i use my nexus 7 as a in dash h/u and atm have the fiberglass mold with a small hole for a needle or stick to go threw to hit the power buttong when/if it freezes or dies. but i would like to just skip that.
Click to expand...
Click to collapse
there is a fastboot command for auto power on:
http://forum.xda-developers.com/showthread.php?t=2496079
don't know for the reset.
i also have my nexus mounted in my car, and the fastboot trick works for me.
what I'm wondering now is if it works but when using a Qi charger.
JebyDroid said:
there is a fastboot command for auto power on:
http://forum.xda-developers.com/showthread.php?t=2496079
don't know for the reset.
Click to expand...
Click to collapse
thanks will try it out.
schlager said:
i also have my nexus mounted in my car, and the fastboot trick works for me.
what I'm wondering now is if it works but when using a Qi charger.
Click to expand...
Click to collapse
thats a very good question. i have a qi charger here. i will try it out. after i do this patch.
cool let us know. i already put an order for it earlier today, so i'll cancel it if its not any better than my otg+charge cable.
also do you have any temperature issues with the qi charger? just saw some posts on that on the forums
schlager said:
cool let us know. i already put an order for it earlier today, so i'll cancel it if its not any better than my otg+charge cable.
also do you have any temperature issues with the qi charger? just saw some posts on that on the forums
Click to expand...
Click to collapse
just tested the patch, works great in the car. the qi charger does indeed turn the tablet on as well and no heat issues for me. i do have my tab underclocked to 1ghz and undervolted. not sure if that makes a difference in bat temp though
darkmage1991 said:
just tested the patch, works great in the car. the qi charger does indeed turn the tablet on as well and no heat issues for me. i do have my tab underclocked to 1ghz and undervolted. not sure if that makes a difference in bat temp though
Click to expand...
Click to collapse
when it auto powers on with the qi and otg cable plugged in, does the tablet also show the "charging" symbol?
schlager said:
when it auto powers on with the qi and otg cable plugged in, does the tablet also show the "charging" symbol?
Click to expand...
Click to collapse
yes. says its charging just like normal.
i wanted to go ahead and throw this out there but it seems that when charging with wireless charger and it hits the full marker and the tablet stops accepting a charge, the wireless charger will not start charging again unless its unplugged and plugged back in. idk whats up with that. im assuming the tablet just rejects a charge after reaching full and it cant tell the wireless charger to start again? or maybe the charger never actually quits but the tablet doesnt know the wireless charger is still there to continue taking a charge? not sure but either way its pretty annoying seeing as how i have it glued to the back on the tablet and the power is in behind my dash so i cant just unplug it very easy.
for me it seems really tricky to find the sweet spot where it starts charging.
also, i couldn't get it to charge with any charger/adapter without the official wall plug
is yours working with a car charger?
schlager said:
for me it seems really tricky to find the sweet spot where it starts charging.
also, i couldn't get it to charge with any charger/adapter without the official wall plug
is yours working with a car charger?
Click to expand...
Click to collapse
yea. using a dual usb car charger, with 1 output being 1A output and the other being 2.1A. i have the wireless charger connected to the 2.1 and a bluetooth hands free connected to the other. charger works fine until its done charging. i have mine directly in the middle of the tablet. idk if it really differs charger to charger but i use http://www.amazon.com/UPGRADED-Wireless-Charger-Charging-Qi-Enabled/dp/B00C40OG22 maybe the charger your using in the car doesnt have enough juice? try maybe a 1A or higher charger.

Slow battery charge

Does anyone know why it takes so long to charge?Im using stock charger but from the battery log says 304 and I was rold my phone thinks its using usb to charge any ideas?
raw2000j said:
Does anyone know why it takes so long to charge?Im using stock charger but from the battery log says 304 and I was rold my phone thinks its using usb to charge any ideas?
Click to expand...
Click to collapse
not sure if you have tried this, but make sure the usb charger is plugged into the mains charger all the way in...mine was the same, saying usb charging and it was the cable itself
labpedro said:
not sure if you have tried this, but make sure the usb charger is plugged into the mains charger all the way in...mine was the same, saying usb charging and it was the cable itself
Click to expand...
Click to collapse
Yep. For some reason LG decided to go with a USB charger for the phone rather than straight to the mains...
Mine takes about 3 hours to charge fully, when plugged in, locked and connected to WiFi. You have to remember, the G3 has a big battery, bigger than some other phones, so you have to expect it to take longer. I plug it into my USB 3.0 port on my PC when I'm on it and it seems to charge faster (Although my motherboard has the option to turbo a port for charging so it may just be me).
labpedro said:
not sure if you have tried this, but make sure the usb charger is plugged into the mains charger all the way in...mine was the same, saying usb charging and it was the cable itself
Click to expand...
Click to collapse
Mine doesnt say usb charging just charges slow and i tried different chargers
raw2000j said:
Mine doesnt say usb charging just charges slow and i tried different chargers
Click to expand...
Click to collapse
Could just be that LG has set the phone up to detect all chargers as USB considering it comes with a USB charger...
Not sure if that's the reason why but it very well could be.

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