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Fast charge & USB

Hi everyone, I'm looking for more info about the fast charge function of the Note 4: I can read on the charger that it either provides 5 on 9V. Does this mean that I can supply 9V on the USB port to fast charge my note 4 ? Does anyone know how the charger detects wheher it it should supply 5 or 9V?

botid said:
Hi everyone, I'm looking for more info about the fast charge function of the Note 4: I can read on the charger that it either provides 5 on 9V. Does this mean that I can supply 9V on the USB port to fast charge my note 4 ? Does anyone know how the charger detects wheher it it should supply 5 or 9V?
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Click to collapse
Yes, it means that that charger will deliver power at 9 V (at 1.67 A) to the phone.
As for how it decides which voltage/current to use, it'll be as a function of the battery's charge level, temperature, and probably some other factors, but that's getting into some very specific settings for the phone/charger system by that point.

Dan1909 said:
Yes, it means that that charger will deliver power at 9 V (at 1.67 A) to the phone.
As for how it decides which voltage/current to use, it'll be as a function of the battery's charge level, temperature, and probably some other factors, but that's getting into some very specific settings for the phone/charger system by that point.
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thanks for the quick reply! I've got a couple of Dc Converters (buck) and lipo batteries (11.1V) and was wondering how the phone signals the charger it can accept 9V and if I can use my DC step down to feed the phone with9V...
I guess I will have to try

botid said:
thanks for the quick reply! I've got a couple of Dc Converters (buck) and lipo batteries (11.1V) and was wondering how the phone signals the charger it can accept 9V and if I can use my DC step down to feed the phone with9V...
I guess I will have to try
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Click to collapse
I guess it requires original charger for that function, probably with kernel modification you can disable that only 9v OEM charger use for QC

Hello guys ! Do you think this fast charging function is alright for the battery ? as far as i know high current may damage the battery .

liberfarb said:
Hello guys ! Do you think this fast charging function is alright for the battery ? as far as i know high current may damage the battery .
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I agree that it might be damaging to the battery (but obviously not extremely damaging). Why else would there be the option to switch off fast charging? I've switched mine off anyway because I have no use for it as my phone charges overnight and makes no difference how quickly it gets to 100%.

ozaghloul said:
I agree that it might be damaging to the battery (but obviously not extremely damaging). Why else would there be the option to switch off fast charging? I've switched mine off anyway because I have no use for it as my phone charges overnight and makes no difference how quickly it gets to 100%.
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Thank you for the quick replay mate , I have switched this feature off as well for the same reason I charge my smartphone during the night

ozaghloul said:
I agree that it might be damaging to the battery (but obviously not extremely damaging). Why else would there be the option to switch off fast charging? I've switched mine off anyway because I have no use for it as my phone charges overnight and makes no difference how quickly it gets to 100%.
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I personally thought the option to disable Fast Charging was Samsungs' way of reminding us, or letting the uninformed know, that it can do it.

The generally accepted rule amongst radio control hobbyists is that provided the battery is well made, it's not the current that'll kill a battery - it's overcharging it (over 4.2V per cell on a LiPo). Provided that the charging circuit is good (and I have no doubt it is of a high quality) we shouldn't see any degradation in battery life when used with the fast charge process.
Others may chime in with more info, but that's how I understand it.

SquidgyB said:
The generally accepted rule amongst radio control hobbyists is that provided the battery is well made, it's not the current that'll kill a battery - it's overcharging it (over 4.2V per cell on a LiPo). Provided that the charging circuit is good (and I have no doubt it is of a high quality) we shouldn't see any degradation in battery life when used with the fast charge process.
Others may chime in with more info, but that's how I understand it.
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l believe the fast charge is safe for the battery as it charges it at 1C (=1hr charge) which is actually not so fast.
Here is my tip: I have an old charger to charge overnight and use the mote 4 charger only for fast charging during the day (I leave it in my bag). I'm actually lookingfor a way to make a fast charging battery bank.
So here is my question again: has anyone tried supplying 9V to the phone ?

best device in charging
its charging up the whole battery in about an hour, i really like that and the battery gives me a full day

So far right now i can talk for about an hour and play games for about an hour and leave it on overnight and all day and still have 82% left. I'm super impressed!

equlizer said:
So far right now i can talk for about an hour and play games for about an hour and leave it on overnight and all day and still have 82% left. I'm super impressed!
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YOAH!!! Thats insane!

I know that the amperage on the charger is huge in its speed.
I used many custom Roms and kernels in the past on other phones with fast charge. I used several chargers and always charged much quicker with higher amperage outputs. Some were as low as 300 MA to as high as 1.2A. This is why the amperage is so high on this phones charger. The voltage is needed to push the charge quicker. Good luck finding high A charger at 9v.
My 1.2A charger i use as backup is much faster then the 500/700ma ones I have but they are all 5v and can't compete with fast charge.
Sent from my *ROOTED* Note 4 SM-N910W8

I'm also looking for a power bank that would be able to charge at
- 5V 2A,
- 5.5V (Galaxy Tab S)
- 9V (Note 4).
- with 2x18650
- able to charge itself fast too;
- charge-through (charging a device while changing itself).
i now have this ENB model, but it does not deliver 2A to Tab S (and charges at 5V not 5.5).
And it charges itself with 1A even from 2A-capable power supply.

Hi all,
I notice something that the note 4 does not charge fast after I installed S-View cover (original one), although an indication appeared that it is using the fast charging function.
I guessed it assume that the cover is open and charge slower. However, if I removed the S-View it charge noticeably faster.
Do you think this a bug in firmware ??
Thank you,

The so-called USB fast chargers query the device to be charged. Devices capable of fast charging at 9V DC have additional circuitry in their USB ports that the charger can detect. If the charger doesn't detect the circuitry, it falls back to 5V DC mode, like any other USB charger. Assuming the fast charger is functioning correctly, it should not over-charge an older phone or tablet that doesn't support fast charging; it will simply take as long as the original "dumb" USB charger did.

Which charger to use with Nexus 6? (no quickcharge)

Which charger to use? (no quickcharge)
I bought a Samsung charger for my upcoming Nexus 6, i don't want to use the quick charger that comes with the phone. I am starting to suspect that this one is also a quick charger, can anyone look at the attached pictures and tell me? Also if it isn't a quick charger i would like to use it for the long run so my second question is would my battery be affected because of what says on the back of the box that i highlighted? In the highlight are also the specs of the charger, can someone clear this up for me?
EDIT: I cannot post pictures on the forum just yet, so here are the specs
10W Samsung travel adapter, Input 100-240VAC 50-60Hz, Output 5.0VDC 2A
Use only with compatible Samsung devices

mohijavata said:
I bought a Samsung charger for my upcoming Nexus 6, i don't want to use the quick charger that comes with the phone. I am starting to suspect that this one is also a quick charger, can anyone look at the attached pictures and tell me? Also if it isn't a quick charger i would like to use it for the long run so my second question is would my battery be affected because of what says on the back of the box that i highlighted? In the highlight are also the specs of the charger, can someone clear this up for me?
EDIT: I cannot post pictures on the forum just yet, so here are the specs
10W Samsung travel adapter, Input 100-240VAC 50-60Hz, Output 5.0VDC 2A
Use only with compatible Samsung devices
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Click to collapse
2 amp will deliver 2 amp, which is what the turbo charger will deliver, so yes it will turbo charge. Why don't you want to turbo charge?

danarama said:
2 amp will deliver 2 amp, which is what the turbo charger will deliver, so yes it will turbo charge. Why don't you want to turbo charge?
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I want to use the phone for a couple of years and don't want to shorten the battery life and also have the risk of inflating battery and everything that comes with it. What kind of charger should i buy to charge it in some "normal" time? The salesman in Samsung store told me this one charges Note 4, Galaxy S5 - which is why i bought it - the S5 doesn't have the quickcharge tech so i instantly thought it was an ordinary charger. On the other hand, my Galaxy Nexus official charger is rated for 1.0 A which surely isn't strong enough to charge the 6 properly so i am confused with what kind of a charger and with what ratings should i get? Thank you in advance.

mohijavata said:
I want to use the phone for a couple of years and don't want to shorten the battery life and also have the risk of inflating battery and everything that comes with it. What kind of charger should i buy to charge it in some "normal" time? The salesman in Samsung store told me this one charges Note 4, Galaxy S5 - which is why i bought it - the S5 doesn't have the quickcharge tech so i instantly thought it was an ordinary charger. On the other hand, my Galaxy Nexus official charger is rated for 1.0 A which surely isn't strong enough to charge the 6 properly so i am confused with what kind of a charger and with what ratings should i get? Thank you in advance.
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2amps isn't going to shorten the life below 2 years. Higher amps only shorten life if they are above battery tolerances, which 2 amps is not.
Anyway, you'll want a 1 or 1.2 amp charger for slow charging

danarama said:
2amps isn't going to shorten the life below 2 years. Higher amps only shorten life if they are above battery tolerances, which 2 amps is not.
Anyway, you'll want a 1 or 1.2 amp charger for slow charging
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Can i use this charger safely with the Nexus 6? After some researching this one is actually quickcharge 1.0 by the specs so i it should not be so "harsh" with the temperature on the phone.

mohijavata said:
Can i use this charger safely with the Nexus 6? After some researching this one is actually quickcharge 1.0 by the specs so i it should not be so "harsh" with the temperature on the phone.
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Yes.

If I were you, I would use the charger that comes with the Nexus 6. Which is tested by Motorola to work properly. I've had my Nexus 6 since December 2014 and no problems. I charge through my laptop will at work though.

logicrulez said:
If I were you, I would use the charger that comes with the Nexus 6. . .
I charge through my laptop will at work though.
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He wants slow charging. So charging through laptop / pc will be fine.
Charge cspacity of usb ports is 500 mA (900 mA for USB 3.0), that's good for slow charging.
Also 1-dollar charger from eBay will be fine.

NLBeev said:
He wants slow charging. So charging through laptop / pc will be fine.
Charge cspacity of usb ports is 500 mA (900 mA for USB 3.0), that's good for slow charging.
Also 1-dollar charger from eBay will be fine.
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He wants it but hasn't got a valid reason to want it. The motorola charger is the best charger to use and it won't shorten his battery life.

danarama said:
He wants it but hasn't got a valid reason to want it. The motorola charger is the best charger to use and it won't shorten his battery life.
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And slow charging won't lengthen it.;(

NLBeev said:
And slow charging won't lengthen it.;(
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Nope. So the only thing that will change is his phone will take longer to charge.
That said for me, turbo charge stopped working and I'm very annoyed.
Google have first sent me a new charger which still hasn't arrived. Though I think the issue is the phone. But I wanted to avoid a refurb as long as possible. Can't live without turbo charge now.

I have this charger, http://www.walmart.com/ip/Belkin-F8J031TT04-BLK-Micro-Wall-car-Chrg-Kit-2.1a-10w-W-4ft/40457559, but i got just the charger for $20. It most definitely doesnt turbo charge, it takes atleast 2 hours, so id say its a "normal" charge for this phone and i think its better than the turbo charger, because it doesnt get hot and its still decently fast

danarama said:
. . .
Google have first sent me a new charger which still hasn't arrived. Though I think the issue is the phone. But I wanted to avoid a refurb as long as possible. Can't live without turbo charge now.
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Click to collapse
The turbo output is only supplied on turbo enabled devices. So there is something wrong with switching to turbo modes 9 V and/or 12 V
I am curious what is the cause of this issue.
Did you try an 'charge app' like Ultra Fast Charger.?

NLBeev said:
The turbo output is only supplied on turbo enabled devices. So there is something wrong with switching to turbo modes 9 V and/or 12 V
I am curious what is the cause of this issue.
Did you try an 'charge app' like Ultra Fast Charger.?
Click to expand...
Click to collapse
I think its a usb port issue myself.
I don't know what a charge app is. I am monitoring my input though. I know the issue is not software as it just stopped working one day last weekend with no software changes.
Actually,.could even be the battery as.my wireless charger is very slow now too.

danarama said:
I think its a usb port issue myself.
I don't know what a charge app is. I am monitoring my input though. I know the issue is not software as it just stopped working one day last weekend with no software changes.
Actually,.could even be the battery as.my wireless charger is very slow now too.
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Click to collapse
There are some apps in the play store claiming to boost the battery charge.
When wireless charging is also slow, than it could be indeed the battery.
Maybe a complete discharging ?
BTW
Turbo mode is only active when the battery is less than 75% charged.

NLBeev said:
There are some apps in the play store claiming to boost the battery charge.
When wireless charging is also slow, than it could be indeed the battery.
Maybe a complete discharging ?
BTW
Turbo mode is only active when the battery is less than 75% charged.
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Click to collapse
I don't believe they can but I'm not.going.to try anyway.

You should use a 5 Volt 2 Amp charger, those chargers are the one's that most phones use. Most new phones are using Qualcomm's Quick Charge 2.0, which you should use but if you are not comftorable then the 5 Volt 2 Amp will work good.

Errr, QuickCharge will in fact degrade a battery faster, it's still used because most phones only have a 2 year lifespan.
A non QuickCharger will also make it run less hot while charging and also be less likely to cause cell expansion. Not sure why there's so many people denying this.
EDIT:
Including some sources:
http://www.sciencedaily.com/releases/2015/04/150414094117.htm
Please don't tell him that it won't degrade his battery when it definitely will. It's basic chemistry.
To OP:
Any regular non Quick USB charger of reputable make will do fine. I use an older HTC charger. Don't get a super cheap offbrand one as it probably has fluctuating voltage which will also damage your battery.

seshmaru said:
Errr, QuickCharge will in fact degrade a battery faster, it's still used because most phones only have a 2 year lifespan.
A non QuickCharger will also make it run less hot while charging and also be less likely to cause cell expansion. Not sure why there's so many people denying this.
EDIT:
Including some sources:
http://www.sciencedaily.com/releases/2015/04/150414094117.htm
Please don't tell him that it won't degrade his battery when it definitely will. It's basic chemistry.
To OP:
Any regular non Quick USB charger of reputable make will do fine. I use an older HTC charger. Don't get a super cheap offbrand one as it probably has fluctuating voltage which will also damage your battery.
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Actually you've misread (or not read fully). No one disputes the science. That article isn't accurate. All it says is "too quickly" and if you read what I have said, is that the turbo charger is within acceptable tolerances. I.E. It is not "too quickly"

danarama said:
Actually you've misread (or not read fully). No one disputes the science. That article isn't accurate. All it says is "too quickly" and if you read what I have said, is that the turbo charger is within acceptable tolerances. I.E. It is not "too quickly"
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I think you're not understanding the basic chemistry. More heat = more degradation of the Li-ion battery, regardless of tolerances. A lower power charge will always degrade the battery slower. This isn't about tolerances.

warp charger on x2 pro????

hello, have anyone tried warp charger feom oneplus (30w) on realme x2 pro if so pleas share the experience it's a urgent matter thx in avance.

you4s said:
hello, have anyone tried warp charger feom oneplus (30w) on realme x2 pro if so pleas share the experience it's a urgent matter thx in avance.
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Yes I have one and it works fine, it works at Vooc speed I stead of super vooc,
But I only use the 50 watt charger as don't see reason to use 30

manus31 said:
Yes I have one and it works fine, it works at Vooc speed I stead of super vooc,
But I only use the 50 watt charger as don't see reason to use 30
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Does it really charge at 30W? I believe that would not be the case.

adsubzero said:
Does it really charge at 30W? I believe that would not be the case.
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Yea ,I think so because Realme have vooc charge which is what some lesser phones charge at and at least for me a few .months ago it it displays charging at vooc speed as opposed to super vooc

manus31 said:
Yea ,I think so because Realme have vooc charge which is what some lesser phones charge at and at least for me a few .months ago it it displays charging at vooc speed as opposed to super vooc
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Click to collapse
Could you confirm this with a test of some sort?

adsubzero said:
Could you confirm this with a test of some sort?
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Click to collapse
Yes,I get vooc on the animation when charging with the OnePlus warp charge 30t charger
The screen with the 1560 is when charging with warp on Ampere app

manus31 said:
Yes,I get vooc on the animation when charging with the OnePlus warp charge 30t charger
The screen with the 1560 is when charging with warp on Ampere app
Click to expand...
Click to collapse
Do you have a result of charging speed in AccuBattery for example? Could you also do a test when your phone battery is low? At such high battery the charging speed will be slow, and it will show less Amps than the maximum (and it should definitely show higher than than with the Vooc speeds). I'm not saying I don't believe you lol, but the phone might be tricking both of us showing Vooc, when it actually doesn't utilise Vooc speed.

adsubzero said:
Do you have a result of charging speed in AccuBattery for example? Could you also do a test when your phone battery is low? At such high battery the charging speed will be slow, and it will show less Amps than the maximum (and it should definitely show higher than than with the Vooc speeds). I'm not saying I don't believe you lol, but the phone might be tricking both of us showing Vooc, when it actually doesn't utilise Vooc speed.
Click to expand...
Click to collapse
Apologies but I have a life to lead,maybe someone else cud do that

manus31 said:
Apologies but I have a life to lead,maybe someone else cud do that
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Click to collapse
Lol I respect that, but all I'm asking is when your battery is low next time and you connect it to the charger, just check the amps again in Ampere. And perhaps check for how long it charged in Accubattery, if you have it installed.

adsubzero said:
Lol I respect that, but all I'm asking is when your battery is low next time and you connect it to the charger, just check the amps again in Ampere. And perhaps check for how long it charged in Accubattery, if you have it installed.
Click to expand...
Click to collapse
Hope this helps ?

manus31 said:
Hope this helps ?
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If your battery capacity is properly set in Accubattery, then it seems that it's charging as you would expect from the Warp charge. Just that the Amps seem low, but who knows. In the "history" tab it should show the exact duration. Thanks for testing :good:

adsubzero said:
If your battery capacity is properly set in Accubattery, then it seems that it's charging as you would expect from the Warp charge. Just that the Amps seem low, but who knows. In the "history" tab it should show the exact duration. Thanks for testing :good:
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No expert myself but it seems to be charging just as fast as my old 6T though this is a warp charge 30t charger I got off OnePlus using voucher Codes,
My 50 watt charger is the EU one and I use a eu to UK adapter with no issue.
Don't think I'll use the warp charge again as it's noticeably slower than the 50 watt,
Though the warp charge is still good 27 to 85 in 33 mins
Would probably be around 12 mins on the 50 watt

Yep that seems good. Nice job :good:

adsubzero said:
Yep that seems good. Nice job :good:
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in deed thanks for him i have 18w & 27w from xiaomi and they charge the phone in about 2 hours wich is a nightmare since i dont have the supervooc nor i can find it in my country now i have 2 choice wrap charger or a regulaf oppo one this one in the pjoto beleow:

Question Can you use a different charger brick/block?

Im planning to use a 18W charger to lessen the heat from the phone and to increase the life of the battery from using the 33W brick. Is it okay to use a different charger brick?

yes, I got this phone less than a week ago and charged it two or three times, and didn't use original charger yet, so no worries, it'll work ok

seijicastell said:
Im planning to use a 18W charger to lessen the heat from the phone and to increase the life of the battery from using the 33W brick. Is it okay to use a different charger brick?
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Click to collapse
Same here. I also use other charger and did not use 33 w charger yet. It charges fine without issues but a bit slower. It is up to you to decide to use 33 w or lesser w charger.

It won't effect anything except if you want fast charging.
If you can software disable fast charging it doesn't matter which brick you use.

blackhawk said:
It won't effect anything except if you want fast charging.
If you can software disable fast charging it doesn't matter which brick you use.
Click to expand...
Click to collapse
really? how? afaik there's no such setting in miui

william tanaya said:
really? how? afaik there's no such setting in miui
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Click to collapse
Too bad. Not familiar with that brand at all.
Usually it's getting fast charging to work rather than the inverse.
I think I would rather have your dilemma.

My phone doesn't charge with 33W even with original charger,
So many users also complaining the same that it isn't charging fast enough
I use "battery charge limit" magisk module to limit charge limit
Or
You can use accubattery app to set alarm at specific battery charge limit

I use zmi charger 18w with pixel rom. Still recognized as fast charging!

crazyguyrohan said:
My phone doesn't charge with 33W even with original charger,
So many users also complaining the same that it isn't charging fast enough
I use "battery charge limit" magisk module to limit charge limit
Or
You can use accubattery app to set alarm at specific battery charge limit
Click to expand...
Click to collapse
Make sure the battery temp is at least 82°F before you start charging. I get best results with a start temperature of 85-95 F.
Keep the temperature under 100F while charging. Use cooling if needed. Fast charging will warm up the phone fast especially in high ambient temperatures... if will need cooling. A fan and/or damp microfiber cloth helps. Keep it of direct sunlight
Keep the screen off when charging as it will completely skew the charge curve.
A quick 2 second look doesn't seem to hurt though. Likewise I use bt and Poweramp to listen to music while charging with no perceivable impact on my Note 10+.
Play with it and see how it behaves...

Would a 10w charger also work?

suv1734 said:
Would a 10w charger also work?
Click to expand...
Click to collapse
As long as the screen is off it should.

Doubt about fast charge

Hello friends. I've just bought a S20 FE Snapdragon to my wife but I have a doubt about fast charge.
My 18W Quick Charge 3.0 and my 27W Quick Charge 4.0 don't work as I wished. They just do a normal charge.
I've read that Exynos Edition uses Samsung 25W charger, but what about the Snapdragon edition? Does it use this 25W charger? What about the 45W charger?
Thank you guys.

yes it supports up to 25watt charging, you have to turn it on yourself if it's not activated.
battery and device care / battery / more battery settings / enable fast charge

3mel said:
yes it supports up to 25watt charging, you have to turn it on yourself if it's not activated.
battery and device care / battery / more battery settings / enable fast charge
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Click to collapse
Thank you for the reply. I've search it and it's enabled by default. I tried an Aukey Quick Charge 3.0 18 W and worked. It says it's fast charge. It's not stellar but way better than 2+ hours.

even without fast charging I don't wait 2 hours

3mel said:
even without fast charging I don't wait 2 hours
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I didn't try the 15w charger that comes in the box. What I think that was weird was my 27W Xiaomi charger charging with the time beyond two hours until it finishes.
Do you know if the 45W charger works?

nothing above 25watts will work any faster, the maximum current draw is 25watts if it works at all. not all fast chargers do work properly, that might explain your Xiaomi 2hrs plus.
the phone and the charger need to be able to communicate with each other / be running on the same standard.

3mel said:
nothing above 25watts will work any faster, the maximum current draw is 25watts if it works at all. not all fast chargers do work properly, that might explain your Xiaomi 2hrs plus.
the phone and the charger need to be able to communicate with each other / be running on the same standard.
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Thanks for the enlightment. That's sad. Even my mother's Poco X3 comes with a 33W beast charger.

antonioli84 said:
Thanks for the enlightment. That's sad. Even my mother's Poco X3 comes with a 33W beast charger.
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that's obviously one of the areas where they saved money to make the phone cheaper I guess.

3mel said:
that's obviously one of the areas where they saved money to make the phone cheaper I guess.
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Click to collapse
Yes man. That's even sad because they put a beast like a Snapdragon 865 on it.

I am satisfied with original 15W charger: 11%~100% in 1h20m is decent speed and at the same time low stress for battery.

antonioli84 said:
I didn't try the 15w charger that comes in the box. What I think that was weird was my 27W Xiaomi charger charging with the time beyond two hours until it finishes.
Do you know if the 45W charger works?
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Click to collapse
Thank you, I was thinking of buying the Mi 27W SonicCharge, now that it doesn't support, looks like we are mostly left with the OEM charger from Samsung only.

demongokul said:
Thank you, I was thinking of buying the Mi 27W SonicCharge, now that it doesn't support, looks like we are mostly left with the OEM charger from Samsung only.
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True. I just bought a Samsung 25W super fast charge to my Snapdragon 865 and worked. I'll buy one for my father that uses an Exynos SoC too. It's sad to spend money with something like that.

I use the Samsung 20 w brick. When fast charging it get about 2%@minute.
Fast charging will not engage if the start temperature is too low or high.
If the battery has failed*.
Fast charging ramps down at around 80% to slow charging or if battery temperature goes to high. If temperature continues to climb above 102 F or so it will disengage entirely and end that charge cycle.
After 90% the charge rate crawls at as little as 1%@2 minutes.
* check for rear cover bulging. A battery can fail at any time but it's more likely to happen in an older degraded cell. Failures can happen fast, replaced asap, like that same day, if this happens. It can destroy the phone.