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Where's the high current POGO charger?

For cryin' out loud, I'm tired of watching my battery drain while plugged into the supplied USB charger. It's ridiculous. I've never owned a portable device that discharged under normal use when plugged into its supplied AC adapter. If I want to spend 15 hours a day playing Angry Birds, it should be possible when I have a power source which is virtually unlimited. Twice, I've started the day with a full battery, had the device plugged in to the supplied 2 amp charger all day, and had <10% left on the battery when I went to bed. (No, I don't actually play Angry Birds for more than a few minutes at a time but I do use the device a lot.)

jtown said:
For cryin' out loud, I'm tired of watching my battery drain while plugged into the supplied USB charger. It's ridiculous. I've never owned a portable device that discharged under normal use when plugged into its supplied AC adapter. If I want to spend 15 hours a day playing Angry Birds, it should be possible when I have a power source which is virtually unlimited. Twice, I've started the day with a full battery, had the device plugged in to the supplied 2 amp charger all day, and had <10% left on the battery when I went to bed. (No, I don't actually play Angry Birds for more than a few minutes at a time but I do use the device a lot.)
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I don't have that problem. You do know that your device will wait till it drops some percentage before it starts charging again. It won't keep it at 100% the whole time... Is meant to conserve your battery life

smartadmin said:
I don't have that problem. You do know that your device will wait till it drops some percentage before it starts charging again. It won't keep it at 100% the whole time... Is meant to conserve your battery life
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Let's pretend I've got just a little experience with portable devices. The standard is to float between 95 and 100% charge and just call it "charged" once it's bounced off 100% the first time.
Here's a test you can do that requires no time on your part. Set it up to play a long movie while it's plugged in. Look at the charge level after it's been going for a couple of hours. And you don't have to take my word for it. I'm hardly the only person complaining that the supplied charger is not capable of keeping up with the device's power requirements.

If you are seeing power drop during normal use while plugged in I'd talk to Google. You may have a defective unit. Mine doesn't do that and I regularly see 20+ hour days with normal use unplugged and usually with some video, browsing, games etc.
Take note off when you see the drop, how much you lose over a given amount off time and call Google and see if this is expected. I'm sure they will help. They have been very responsive when I've called.
Sent from my Nexus 10 using Tapatalk 2

groaner said:
If you are seeing power drop during normal use while plugged in I'd talk to Google. You may have a defective unit. Mine doesn't do that and I regularly see 20+ hour days with normal use unplugged and usually with some video, browsing, games etc.
Take note off when you see the drop, how much you lose over a given amount off time and call Google and see if this is expected. I'm sure they will help. They have been very responsive when I've called.
Sent from my Nexus 10 using Tapatalk 2
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I will watch like 1 hour of Streaming Vid's and loose like 4-5% while plugged in.

100% brightness causes my device to use more power then what's being supplied from the wall charger, and a few other people have confirmed similar incidents as well.
Max your brightness, and then go play a 3D game, while being plugged into the wall charger, and watch the percentage drop still

My tablet lasts a few days at least before needing a charge. I plug it in over night and it charges to full. I couldn't be more happier with it considering it is not self-sufficient.

Mine drops a few % per hour in use with the stock charger connected. Brightness at 50%, WiFi on, BT off. I'm not going to whine about it, but its the only thing that's not great with this tab.
Sent from my Nexus 10 using XDA Premium HD app

Why do everyone seems to think that the POGO-charger would be able to charge the Nexus faster?
I've read on an Ipad forum that about 10-15 hours charging are normal (the Ipad 4 has a 42,5Wh battery), and their chargers give as much Watt as our Nexus chargers.
One thing is clear, you can't increase the voltage. That would kill your Nexus right away.
My Samsung charger I recieved with my Nexus 10 says 5V out and 2A.
5*2= 10W.
Isn't that the same rates that other tabs have, even if they got special chargers?
So, the only thing the POGO-charger could raise, is the amount of current.
Even if you had a 10A charger, if the Nexus cant use more than 2A, it wouldn't get anymore amps than 2.
If the kernel on the Nexus doesn't support any higher charger rates, then you cant change anything.
There is a reason why the manufacturers have set 5V as standard - to make it work together with USB.
Battery Specs: Samsung Li-Ion 3.75V 22.75Wh 9000 mah.
So, it's easy. If you had a 1W charger, it would take 22,75 hours to get a fully charged battery.
In theory, it should take 2,75 hours to fully charge the Nexus 10 battery, but we don't turn it off, we use it while charging, it uses background sync and I dont know what the efficiency rating is on the charger or the Nexus.
You know you could feel some heat on the back of the Nexus 10 after some usage?
That's some of the battery's energy that spoils into heat, meaning that there are power losses.
It's normal though, we don't have anything yet on earth that could convert 100% energy from one form to another.
You could compare it to a car, you need a cooler-system to remove the excessive heat from the engine.
Even if your Nexus is far more efficient.

Olaeli said:
Why do everyone seems to think that the POGO-charger would be able to charge the Nexus faster?
I've read on an Ipad forum that about 10-15 hours charging are normal (the Ipad 4 has a 42,5Wh battery), and their chargers give as much Watt as our Nexus chargers.
One thing is clear, you can't increase the voltage. That would kill your Nexus right away.
My Samsung charger I recieved with my Nexus 10 says 5V out and 2A.
So, the only thing the POGO-charger could raise, is the amount of current.
Even if you had a 10A charger, if the Nexus cant use more than 2A, it wouldn't get anymore amps than 2.
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Please do not speculate about how much current can go through the pogo connection. Speculation is worthless and helps nobody. The fact that the included charger only puts out 2 amps probably has to do with limitations of the USB connection. But I'm speculating. See how pointless that is? The fact that one connection is limited to 2 amps doesn't mean all power connections are limited to 2 amps.
And where did I say anything about increasing the voltage? I'm not an idiot and didn't suggest such a stupid thing.
As for temperature, that can easily be monitored during charging and the current can be reduced if it gets too high. You are aware that there is a temperature sensor for the battery, right?
None of which has a darn thing to do with my opinion that it's unacceptable to produce a device that uses more power than it can get from its AC adapter. If there really is no way to run the Nexus 10 at full tilt without supplementing the AC adapter with battery power, Samsung should have addressed that problem before going into production with this unit. This isn't a $150 entry level device. It's the Android flagship.

Olaeli said:
Why do everyone seems to think that the POGO-charger would be able to charge the Nexus faster?
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Click to collapse
A person that supposedly has said charger mentioned that it seemed to charge faster.

jtown said:
Please do not speculate about how much current can go through the pogo connection. Speculation is worthless and helps nobody. The fact that the included charger only puts out 2 amps probably has to do with limitations of the USB connection. But I'm speculating. See how pointless that is? The fact that one connection is limited to 2 amps doesn't mean all power connections are limited to 2 amps.
And where did I say anything about increasing the voltage? I'm not an idiot and didn't suggest such a stupid thing.
As for temperature, that can easily be monitored during charging and the current can be reduced if it gets too high. You are aware that there is a temperature sensor for the battery, right?
None of which has a darn thing to do with my opinion that it's unacceptable to produce a device that uses more power than it can get from its AC adapter. If there really is no way to run the Nexus 10 at full tilt without supplementing the AC adapter with battery power, Samsung should have addressed that problem before going into production with this unit. This isn't a $150 entry level device. It's the Android flagship.
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Please, you started speculating about a high-current POGO-charger that doesn't exist.
Sure, you didn't mention the voltage, but I ve seen comments about it before, so I just wanted to make it clear.
And I didn't say the temperature was a problem either, just that it lowers the efficiency of the charger and the device.
Samsung maybe didn't know there was a charging problem.
We've seen examples before that manufacturers don't test their products enough.
(ASUS Transformer with encased aluminum body, anyone?)
And I know, this is supposed to be a flagship, but what everyone forgets is that it's much cheaper than other brands.
I was looking forward to buy a ASUS TF700 with keyboard at almost twice the price as the Nexus 10 before I read about the Nexus.
Even if it doesn't justify the charging problem, you could try to adapt to the circumstances until there's a solution.
When I'm low on battery, I let the device charge and do something else for a change.
Sent from my Nexus 10 using xda app-developers app
Edit: If you look at the pictures of the POGO-charger that's across the internet, the charger is still only 5V, 2A.

Olaeli said:
Please, you started speculating about a high-current POGO-charger that doesn't exist.
Sure, you didn't mention the voltage, but I ve seen comments about it before, so I just wanted to make it clear.
And I didn't say the temperature was a problem either, just that it lowers the efficiency of the charger and the device.
Samsung maybe didn't know there was a charging problem.
We've seen examples before that manufacturers don't test their products enough.
(ASUS Transformer with encased aluminum body, anyone?)
And I know, this is supposed to be a flagship, but what everyone forgets is that it's much cheaper than other brands.
I was looking forward to buy a ASUS TF700 with keyboard at almost twice the price as the Nexus 10 before I read about the Nexus.
Even if it doesn't justify the charging problem, you could try to adapt to the circumstances until there's a solution.
When I'm low on battery, I let the device charge and do something else for a change.
Sent from my Nexus 10 using xda app-developers app
Edit: If you look at the pictures of the POGO-charger that's across the internet, the charger is still only 5V, 2A.
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I have a nexus 10, nexus7, and a Tf700. I am noticing slightly faster charging on the n10 using the Tf700 ac adapter. The same is true when trying to charge my tf700. The stock samsung n10 ac adapter charges it slower than the asus transformer adapter. The same is true with my nexus 7 adapter. Ive used the n7 adapter to charge my tf700 and it was not as quick a charge. Meanwhile all 3 units are rated for 5v 2amp.

Olaeli said:
We've seen examples before that manufacturers don't test their products enough.
(ASUS Transformer with encased aluminum body, anyone?)
Click to expand...
Click to collapse
I wonder what all they did test if they somehow managed to miss that...
joe1l said:
I have a nexus 10, nexus7, and a Tf700. I am noticing slightly faster charging on the n10 using the Tf700 ac adapter. The same is true when trying to charge my tf700. The stock samsung n10 ac adapter charges it slower than the asus transformer adapter. The same is true with my nexus 7 adapter. Ive used the n7 adapter to charge my tf700 and it was not as quick a charge. Meanwhile all 3 units are rated for 5v 2amp.
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Could be possible the N10 charger isn't actually putting out 2A? Might need a multimeter or something to verify for sure though...

I am currently out of town so keep in mind I didn't have a chance to dig too deep but I've given the kernel a quick look through.
There is no such thing as the "high current pogo charger." The pogo pins accept 2A max and appears to be ~5V. The USB connector has the same limits.
I also took a look at the current at the battery to make sure the charger was being detected correctly. My 1A Samsung non-Nexus 10 charger seems to supply ~900ma to the battery which is as much as you should expect out of a 1A charger. My Nexus 10 charger supplies ~1600ma to the battery. This number seems slightly low but at least indicates the charger is detected correctly.
*If* the pogo charger does indeed charge faster, it will likely be because the pogo charger is able to supply some current that is asymptotically closer to 2A. In other words, it will not charger much faster than the USB charger.
On the other hand, the pogo charger will still be nice to have as it will allow simultaneous usage of USB OTG and charging.
Like I said before, I was unable to dig very deep because I'm out of town and browsing sysfs and kernel source on a tablet isn't the best experience. So, the info I found might not be 100% correct.

dalingrin said:
There is no such thing as the "high current pogo charger." The pogo pins accept 2A max and appears to be ~5V.
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Please show some proof/references for this statement.

Valynor said:
Please show some proof/references for this statement.
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There are many indicators throughout the kernel but for brevity I'll post what I think is the most concise.
https://github.com/CyanogenMod/andr...ng/arch/arm/mach-exynos/board-manta-battery.c
Line 773-776
Sets the current to 500ma if USB is detected on the pogo or 2A if AC is detected.

Well if you're reading 1600ma using the standard ac adapter that comes with the N10 and possibly closer to 2000ma (say 1900ma) using the pogo, then that is 1/5 faster charging. In terms of time that is quite a saving.
Of course, that is all speculation

USB current limits
I thought I'd post this as information I found while doing a spot of light reading
The current specification of a USB 2.0 port can be a maximum of 1.8A. Within Constraints.
"Battery Charging Specification 1.1: Released in March 2007.
A usb charging port places a termination resistance between D+ and D- to allow the maximum 1.8A", meaning that at this current, there can be no data transmission.
This appears to be increased for USB 3.0 standard.
"Battery Charging Specification 1.2: Released in December 2010.
Several changes and increasing limits including allowing 1.5A on charging ports for unconfigured devices, allowing High Speed communication while having a current up to 1.5A and allowing a maximum current of 5A."
citations come from documents here:
http://www.usb.org/developers/devclass_docs
As POGO pins do not have to follow any specification the only limit is the current the board & charging circuit can handle.

Look at the specs on the wall plug in unit. It's not a charger it's a 5V power supply and the charger is inside the N10. However the charger is setup determines the charging rate. Like mentioned above, it may not matter if you "could" use a 10A at 5V power supply.

4.2A Car Charger on ebay...need help...

Hello, Long time follower, first time poster.
I cannot post the link, but if you search "Juiced Systems 4.2 AMP" in ebay it's the first item under "Best match" and it's $19.99
Has anyone tried these chargers that claim 2.1A per USB port? Or does anyone know of any similar car chargers that charge 2 devices @ 2.1A?
I just want to buy the best charger that isn't going to blow up my phone, and a dual charger would be excellent if possible.
Thanks in advance.

giz_mang said:
Hello, Long time follower, first time poster.
I cannot post the link, but if you search "Juiced Systems 4.2 AMP" in ebay it's the first item under "Best match" and it's $19.99
Has anyone tried these chargers that claim 2.1A per USB port? Or does anyone know of any similar car chargers that charge 2 devices @ 2.1A?
I just want to buy the best charger that isn't going to blow up my phone, and a dual charger would be excellent if possible.
Thanks in advance.
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Click to collapse
If it's the same one here from amazon http://www.amazon.com/Juiced-System...dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1 it appears to be apple only.

The one Android customer from that Amazon link said:
I bought this assuming it would charge my Droid DNA at an AC rate. Unfortunately, it charged at a USB rate and could not keep up with usage while driving.
It sounds like with that particular device, in order to get an Android phone to charge at an AC rate is to either modify the charger (through soldering) to short out the data pins or use a USB charge-only cable (DIY modification of an existing cable or purchased one). The Android phone should then see the charger as AC instead of USB for, hopefully, full and faster rate of charge.

I know you are looking for dual port, each with 2.1A - but I wouldn't hold my breath this one will output dual 2.1A without throttling down one of the ports. Its impossible to fit quality circuit in a small cigarette lighter package where due to excess heat the efficiency of your converter will decrease. And even if they manage to produce 4.2A you will either blow your fuse or melt your charger. Just think about it, you won't have any air circulation to even cool it down.
I only trust dual port chargers with 2.1A/1A rating. I reviewed one before - HERE from iSmooth which does work! Also, to my surprise, iSmooth charger was actually made for iPad/iPhone but it WORKS perfectly with Note 2. I can't voucher for other Apple converters, and as a matter of fact I have another one with a separate Apple and Android ports and Note 2 doesn't charge from Apple port. But the one from iSmooth I'm using right now works perfectly for Note 2 and also looks awesome in the car with a blue glow light

Criteria for charging amps

Hi,
Does anyone know why it is such a god damn crapshoot for charging speeds on the galaxy note 2 (or any samsung device for that matter).'
You buy a charger rated for 2amps and you never know what it will give you.
You buy a USB micro cable and get anywhere between 0.4amps and 1.6amps.
What is the criteria that the phone is using to determine how many amps to pull from the charger? How does it even know what gauge of wire it is? Is there some sort of resistance check?
I have a Galaxy Note 10.1 and that is even more particular than the GN2. With most aftermarket chargers, it absolutely refuses to charge. I've had so much trouble finding a charger for it I've just stopped using the tablet since I only have one working charger for it.
It really sucks spending anywhere between $2-$30 dollars on a charger and not knowing if it will work. My success rate has been less than 10%.
I try to do forum and google searches, but all I seem to find are comments like "I bought this charger. Seems to work." With no detailed information on what performance they are getting out of it.
This is really turning me off samsung products. I don't have this problem with my HTC or LG android devices.

I don't know why you have problems, I have 2 samsung devices (phones) and I chare them with their original chargers, charger from Nexus 7 and my old charger from Desire HD and all work just fine... ofcourse, the original one is the fastest, since it is 2A, HTC one is 750mA and Ativ S one is 500mA, N7 one is 1A....

dalanik said:
I don't know why you have problems,
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Click to collapse
You kind of answer this for yourself, as follows:
dalanik said:
I have 2 samsung devices (phones) and I chare them with their original chargers, charger from Nexus 7 and my old charger from Desire HD and all work just fine... ofcourse, the original one is the fastest, since it is 2A, HTC one is 750mA and Ativ S one is 500mA, N7 one is 1A....
Click to expand...
Click to collapse
Your stock charger is 2A. (about 1.5-2 hours to charge)
Your HTC charger is 750mA (about 4-5 hours to charge)
Your ATV charger is 500mA (no better than a computer port. 6-8 hours to charge)
This was my point. This IS my problem. Obviously the stock charger works at 2A, but with any other charger it is anyones guess as to what speeds you're going to get out of it. Even when they are specified to work at 2A, you are likely not going to get 2A out of it. The phone is so bloody fickle.
If there was some benchmark or specific set of criteria I could use when I purchase a new charger to know for certain if it will charge at 2A, then that would mitigate some of the problem at least. But right now, there is none as far as I can tell. When I purchase a charger, I literally have no idea if it will run at 2A with this phone.
I'm glad that you're not bothered by the slow charging speeds and are happy with <1A. I'm sure this works well for most people. It doesn't for me. I push my phone to the max (as I have every right to) and need a charger that can keep up.

Well, charging slowly is different to what you say i.e. "refusing to charge at all" etc. And of course I don't use Ativ's charger to charge N2 often, it would take ages But I use HTC's charger that is 750mA and it charges within 2 hours which is OK.
Anyways, the only solution for you is to buy BRANDED charger from a company you can trust not some cheap chinese, t should work just fine whether it gives 2A or 1.9A is really no big difference.

dalanik said:
Well, charging slowly is different to what you say i.e. "refusing to charge at all" etc. And of course I don't use Ativ's charger to charge N2 often, it would take ages But I use HTC's charger that is 750mA and it charges within 2 hours which is OK.
Anyways, the only solution for you is to buy BRANDED charger from a company you can trust not some cheap chinese, t should work just fine whether it gives 2A or 1.9A is really no big difference.
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Click to collapse
Well, there are chargers that refuse to work. Especially with the Galaxy Note 10.1.
Cheap ebay chargers are a crapshoot, that much goes without saying. But there are many brand-name chargers that don't work at full speed, despite being rated for 2A.
Its not so much a charger thing as a samsung thing. While I'm not able to find specific criteria as to how/why the phone decides to charge at the speed it does (which is really the only question I had with this thread), I can tell you that there are many brand name products (monoprice, anker, ngear, etc) that are rated for 2A, but will not run at 2A with the samsung. They will usually run at 2A with other products though.
The more research I do, the more I highly suspect that this is a case of Samsung propriety. It looks like that they are deliberately throttling aftermarket chargers to force you to buy their overpriced samsung chargers. As I understand it, it has something to do with creating a voltage divider between two of the contacts, but every diagram I find shows a different wiring scheme. This would indicate that no one really knows for sure.
The one and ONLY question I have with this thread is to find out what criteria the N7100 uses to determine how much amperage to draw. I remain confident that no one will answer this question because it seems no one knows.

For the Note 2: there is a way to get a simple measurement of how much current is being pulled. Refer to this thread for the apk and more info.

alpha-niner64 said:
For the Note 2: there is a way to get a simple measurement of how much current is being pulled. Refer to this thread for the apk and more info.
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Thanks for posting this. I suppose I should have mentioned that I have this app already and it is incredibly useful. I also have this, which with only a few bizarre exceptions, reports the same as the app.
The more people who are aware of this app, the better. People who think that their aftermarket charger "works fine for me" are probably unaware of how much those chargers are under-performing.

I don't have the education to explain your situation your situation well. But it boils down the electrical engineering the the physics of electricity.
There are quite a few variables that all effect the charging of devices. First thing is what does the device require for charge input, which is both amps and voltage. For whatever reason, quite a few tablets require 15 volts versus 5, which is what most mobile phones need. I have this same issue with my ASUS Transformer Infinity pad. It requires 2.0amps with 15 volts. I have a Galaxy Note II with needs 2.0amps with 5 volts. Unfortunately, when I use my phone charger with the tablet, it puts out enough to trigger a charger is plugged in (turns on tablet if it is off), but not enough to trigger there is actual charging. It does charge it, but it's a trickle charge; basically if it using while plugged in, it only slows the battery depletion rate.
As for the charge output, now you're getting into build quality, resistance of the components of the charger itself and the USB cable being used.
And then depending the device, the pins used on the USB cable can have an effect too. This mostly occurs with tablets or proprietary cables because the pins may tell the hardware what kind of charger is being used, which may have built in limits for charging.
Hopefully that helps some.

lovekeiiy said:
I don't have the education to explain your situation your situation well. But it boils down the electrical engineering the the physics of electricity.
There are quite a few variables that all effect the charging of devices. First thing is what does the device require for charge input, which is both amps and voltage. For whatever reason, quite a few tablets require 15 volts versus 5, which is what most mobile phones need. I have this same issue with my ASUS Transformer Infinity pad. It requires 2.0amps with 15 volts. I have a Galaxy Note II with needs 2.0amps with 5 volts. Unfortunately, when I use my phone charger with the tablet, it puts out enough to trigger a charger is plugged in (turns on tablet if it is off), but not enough to trigger there is actual charging. It does charge it, but it's a trickle charge; basically if it using while plugged in, it only slows the battery depletion rate.
As for the charge output, now you're getting into build quality, resistance of the components of the charger itself and the USB cable being used.
And then depending the device, the pins used on the USB cable can have an effect too. This mostly occurs with tablets or proprietary cables because the pins may tell the hardware what kind of charger is being used, which may have built in limits for charging.
Hopefully that helps some.
Click to expand...
Click to collapse
That last part is correct. I actually know enough about electrical circuits to be pretty sure it is the phone deciding how much power to pull.
Ohms law states that the amperage of a circuit is the voltage of the circuit devided by the resistance (in ohms).
USB circuits are almost universally 5 volts. I remember reading somewhere that a phone has a potentiometer that protects it from circuits of incorrect voltage, up to a certain amount. This is probably why you can get away with sticking a 15V charger onto your phone and not blowing it up. You cannot depend on this however. Generally, you do not want to stick a charger into your device that is a different voltage rating than what the charger is rated for.
The charger decides the voltage, using an internal device that changes AC voltage (120VAC if youre american) to 5VDC (USB) or whatever your device needs. This device is called a rectifier.
As stated above, the charger decides the voltage. The battery determines the resistance*, therefore the amperage is the natural result of deviding the voltage by the resistance.
*Resistance is added to the circuit by the wire and the charger itself, but is usually inconsequential.
When a charger says that it is rated for a certain amperage, that means that it is the maximum amount of current that thr internal components can handle safely, without running the risk of earth-shattering kabooms (fire). If the circuit you have connected to your charger contains too little resistance, you will increase the amperage (ohms law, as stated above), and you may end up with a piece of charcoal where your charger used to be.
Thr fact that the samaung phones can change the amperage of a charging circuit so fickly must mean the phone is capable of changing its resistance. So the question becomes, what criteria is it using to determine when to change the resistancr and to what?
-PW
This may be the longest thing ive ever typed on my phone.

I'm not disagreeing since, as you said, the mobile device manufactures have build in some safe guards so we don't fry them from incorrect chargers or over charging.
But there are charges that are 15v. I've have one that came with my ASUS Transformer Infinity Pad. I think many Samsung tablets are in the same boat. I don't recall using that charger on any of my smartphones; if I have, it's only been once or twice, but good possibility I may never have. But as stated earlier, I have used my phone chargers on the tablet, but only does a trickle charge. That tablet has some wide input plug at the end of the USB cord. I'm thinking one of the pins must not get enough power to trigger the full charge. Yet, if I use my Anker external battery, set it to 15v, and a few adapters, it triggers the normal charge cycle.
Don't forget,phones such as Galaxy Note 2, Galaxy S3, use 11pin microUSB ports versus the standard 5. I have no idea what all pins do or trigger, My assumption, part of your answer why the charge output varies lies with how they're use the other pins. I know quite a few tablets have more than 5 pins since the USB port is some wide thing; the ASUS does because it carries data and power for the separate keyboard that can be attached to be a suedo-laptop that has USB ports, battery and full 104 key keyboard; I don't recall what other ports the attachment may have.
I still hold that part of charge difference is also the USB cord itself since difference materials have difference resistance. It may not be as significant as the charger itself, but I've seen significant differences in charging times or depletion rates (around 10% battery per hour) using MHL adapters purely on the USB cables.
Yes, typing out long replies on the phone's virtual keyboard blows monkey chunks. Thus, I use a blue tooth keyboard instead for those situations. I also have a blue tooth mouse, LOL.

[Q] Quick Charge 2.0 confusion

Hi guys!
I recently switched from a Samsung galaxy s5 to a nexus 6. It's been more than great, really. Why did I ever buy galaxy phones?!
I'm confused over quick charge 2.0 and compatibility with other chargers and couldn't find any proper information on the subject.
At the moment I own:
- Aukey 5-port 35W Charger
- Tecknet 6-port 50W Charger
- Anker Astro E5 15000mAh battery bank with 2A + 1A ports
- Large assortment of other single port chargers @ 2-2.4A from Samsung, ASUS, and several aftermarket brands.
All of these chargers, and the battery, delivered (tested with the Ampere app and tons of different cables) ~2A to the galaxy but only deliver ~1A to the nexus 6. The Motorola turbo charger obviously works as intended. Now my questions:
- Does quick charge 2.0 limit any non compatible chargers to 1 amp?
- Is there a way to mod chargers to at least get back 2A charging?
- Worst case, does anyone have experience with a recommendable battery bank and multi port chargers that support quick charge 2.0?
Thanks!

Deleted

@cam30era
I'm using the franco kernel at the moment and as far as I can tell it doesn't have any options related to charge speeds. I'll look into other kernels.
Thanks for the info!

Jonathan030 said:
@cam30era
I'm using the franco kernel at the moment and as far as I can tell it doesn't have any options related to charge speeds. I'll look into other kernels.
Thanks for the info!
Click to expand...
Click to collapse
Welcome.
BTW, there's a button for that...

Jonathan030 said:
@cam30era
I'm using the franco kernel at the moment and as far as I can tell it doesn't have any options related to charge speeds. I'll look into other kernels.
Thanks for the info!
Click to expand...
Click to collapse
Why would you need options relating to change charge speeds? Qualcomm quick charger works on any kernel, if you're talking about USB fast charging, it's already enabled in Franco kernel.
There isn't a need to switch to other kernels.
Sent from my Nexus 6 using Tapatalk

@zephiK You misunderstood my question. The problem I'm looking to solve is the slow charge rate from the chargers in the original post.
To add to that. My macbook also charged my old galaxy phone @ 2amps but with my n6 only does 500mA.
Nothing wrong with the turbo charger

Jonathan030 said:
@zephiK You misunderstood my question. The problem I'm looking to solve is the slow charge rate from the chargers in the original post.
To add to that. My macbook also charged my old galaxy phone @ 2amps but with my n6 only does 500mA.
Nothing wrong with the turbo charger
Click to expand...
Click to collapse
Laptop USB ports at limited to 500mah output unless its a dedicated charging port with USB 3.0 then It can push 1.6A so I don't see how that's possible to charge at 2A from a laptop.

@Pilz this is irrelevant. My 2014 macbook pro charges my old phone much faster than the nexus 6.
Refer to the original post for the topic at hand

Quickcharge 2.0 devices uses the data pin on usb to determine if the charger connected is a quickcharge 2.0 charger. The devices you are using do not have this capability so they charge slower. I do not think this can be changed kernel or phone side.

Thanks! I guess I'll have to replace the chargers/battery

Jonathan030 said:
- Worst case, does anyone have experience with a recommendable battery bank and multi port chargers that support quick charge 2.0?
Click to expand...
Click to collapse
Here are a few on Amazon.com:
CHOE 6 port home charger with 2 Quick Charge 2.0 ports: $34.99 - http://www.amazon.com/dp/B00UBK9M08
CHOE 4 port car charger with 1 Quick Charge 2.0 port: $21.99 - http://www.amazon.com/gp/product/B00R18XTCA
Aukey Quick Charge 2.0 10000 mAh battery pack: $29.99 - http://www.amazon.com/dp/B00UBDI7EC
I haven't tried any of them yet; the car charger arrives tomorrow

Jonathan030 said:
@zephiK You misunderstood my question. The problem I'm looking to solve is the slow charge rate from the chargers in the original post.
To add to that. My macbook also charged my old galaxy phone @ 2amps but with my n6 only does 500mA.
Nothing wrong with the turbo charger
Click to expand...
Click to collapse
I could be wrong S5 I looked up uses usb3.0 right? Does your macbook have usb3.0? If so then the usb 3.0 port can supply more current when detected being a usb3.0 device by your computer and ever more so it is possible for the mac to output a little more current. Can you plug in the S5 then open system profiler to look at USB device tree to see current being delivered? The nexus 6 only using usb2.0 would not get the same treatment by the comp and only receive the max standard of .5 A.
There are many details about the actual max current that can be supplied by the computer's ubs port that I don't know when they are applicable I've just stated reading so I'm not sure why you can get 2.0 A on your S5 and not less, since there are standards that set the max current. Even more complicated is that under certain conditions macs have their own heirarchy of supplying more current to some devices if they "say they need" more current and even then there are limitations. So again I'm not sure what is at play exactly, that determines why the S5 gets more than usual. The .5A is normal for current output on USB 2.0 in the nexus6.

I actually got this in the mail yesterday, and the wall chargers works great...Havent have a chance to test out the car one though!
http://www.amazon.com/gp/product/B00Q6LK81I/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Plus its officially certified by Qualcomm for support 2.0

Jonathan030 said:
@Pilz this is irrelevant. My 2014 macbook pro charges my old phone much faster than the nexus 6.
Refer to the original post for the topic at hand
Click to expand...
Click to collapse
That doesn't make sense which is why I went into some detail about laptop or any computers USB ports. I unfortunately had a MB Pro and hated it, and it never charged any of my phone a at 2A including my wife's old S5. I don't have it anymore so I can't test it again to verify. The person I quoted below explained it a little better than I did.
MunkinDrunky said:
I could be wrong S5 I looked up uses usb3.0 right? Does your macbook have usb3.0? If so then the usb 3.0 port can supply more current when detected being a usb3.0 device by your computer and ever more so it is possible for the mac to output a little more current. Can you plug in the S5 then open system profiler to look at USB device tree to see current being delivered? The nexus 6 only using usb2.0 would not get the same treatment by the comp and only receive the max standard of .5 A.
There are many details about the actual max current that can be supplied by the computer's ubs port that I don't know when they are applicable I've just stated reading so I'm not sure why you can get 2.0 A on your S5 and not less, since there are standards that set the max current. Even more complicated is that under certain conditions macs have their own heirarchy of supplying more current to some devices if they "say they need" more current and even then there are limitations. So again I'm not sure what is at play exactly, that determines why the S5 gets more than usual. The .5A is normal for current output on USB 2.0 in the nexus6.
Click to expand...
Click to collapse

Tower1972 said:
I actually got this in the mail yesterday, and the wall chargers works great...Havent have a chance to test out the car one though!
http://www.amazon.com/gp/product/B00Q6LK81I/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Plus its officially certified by Qualcomm for support 2.0
Click to expand...
Click to collapse
Getwow is officially certified? Why, because they're Amazon page says so?
Scroll down close to the bottom to see Qualcomm certified accessories:
https://www.qualcomm.com/products/snapdragon/quick-charge

PaisanNYC said:
Getwow is officially certified? Why, because they're Amazon page says so?
Scroll down close to the bottom to see Qualcomm certified accessories:
https://www.qualcomm.com/products/snapdragon/quick-charge
Click to expand...
Click to collapse
Those lying bastids! They even stamped Qualcomm 2.0 right on the side lol . Regardless..Wall chargers works as does the car charger, same as the Motorola one

Tower1972 said:
Those lying bastids! They even stamped Qualcomm 2.0 right on the side lol . Regardless..Wall chargers works as does the car charger, same as the Motorola one
Click to expand...
Click to collapse
Qualcomm doesn't post every certified charger on their website. In would email the manufacturer and ask for their certification or a picture of it which most will show you assuming on they're legit.

Jonathan030 said:
Hi guys!
I recently switched from a Samsung galaxy s5 to a nexus 6. It's been more than great, really. Why did I ever buy galaxy phones?!
I'm confused over quick charge 2.0 and compatibility with other chargers and couldn't find any proper information on the subject.
At the moment I own:
- Aukey 5-port 35W Charger
- Tecknet 6-port 50W Charger
- Anker Astro E5 15000mAh battery bank with 2A + 1A ports
- Large assortment of other single port chargers @ 2-2.4A from Samsung, ASUS, and several aftermarket brands.
All of these chargers, and the battery, delivered (tested with the Ampere app and tons of different cables) ~2A to the galaxy but only deliver ~1A to the nexus 6. The Motorola turbo charger obviously works as intended. Now my questions:
- Does quick charge 2.0 limit any non compatible chargers to 1 amp?
- Is there a way to mod chargers to at least get back 2A charging?
- Worst case, does anyone have experience with a recommendable battery bank and multi port chargers that support quick charge 2.0?
Thanks!
Click to expand...
Click to collapse
It is technically incorrect for the phone to accept more than 1 amp on a 5v charger. The quick charge *protocol* negotiates a non-standard charge voltage (up to 12 volts!!!). Quick charge is actually BAD FOR YOUR BATTERY! The higher the current, the greater the temperature. The greater the temperature, the lower the battery life.
Unless you *need* it to charge that fast in an emergency, don't.
I've never even plugged in the charger that came with mine, and I don't intend to.

doitright said:
It is technically incorrect for the phone to accept more than 1 amp on a 5v charger. The quick charge *protocol* negotiates a non-standard charge voltage (up to 12 volts!!!). Quick charge is actually BAD FOR YOUR BATTERY! The higher the current, the greater the temperature. The greater the temperature, the lower the battery life.
Unless you *need* it to charge that fast in an emergency, don't.
I've never even plugged in the charger that came with mine, and I don't intend to.
Click to expand...
Click to collapse
I've used QC 2.0 since I bought my phone during long days and my battery life is just fine. My battery is cooler during QC than when using qi charging so I disagree. Generally speaking you're correct, however the battery would need to get hot and stay hot which is doesn't. QC 2.0 tapers off the voltage and current overtime to a more "normal" amount. Your argument is an old and doesn't always pertain unless your phone is constantly hot.
You're battery degrades overtime anyway and any heat could speed that up. I used to live in AZ where it gets to 120+[°F] in the summer which is hotter than my battery ever gets even using QC from 1% battery. Quick charging won't hurt your battery any more than normally charging it will. There is a cut off for the temperature it will let your battery get before it drops voltage or amperage which will work whether the what is from charging or the environment you are in. As I stated above qi charging will make your battery heat up more (in my case it does) I will post screenshots to back that up if you would like.
Lastly no one is expecting a battery to last 1-2 years without losing capacity so why worry about it? Your phone is warrantied for at least 1 year (I have moto care on top of the regular warranty) which will cover any battery issues. There's no need to panic or make an issue out of nothing.
Now can we please let this argument die? I keep seeing it and its getting rather old. Even if it does (which I'm not saying it does) degrade slightly faster its not a big deal for the aforementioned reasons. Let's get back on topic here people

For those wondering about using a power bank to charge their OP3

One of the big concerns I had with the proprietary Dash Charging system is whether I'd be able to use previously purchased power banks.
I've been testing my OP3 with the RAVPower 26800mAh powerbank along with the Anker USB-C to USB 2.0 cable.
The powerbank is capable of outputting 2.4a, which produces a quick charge on other devices.
On the OP3, I get between 30 and 57% charge / h (measured using the Battery Monitor Widget app), which is acceptable to me.
It's not Dash Charging speed, but it'll work in case you were wondering.

MI Charger
I have a MI 16,000 mAh portable charger with an output of 3.6A. I am getting a pretty awesome speed on 1 min per percent charge. After charge battery drain is lower compared dash charger.

quote from Android central
"For the first time, OnePlus is including a fast charging system on the OnePlus 3. Rather than go with another standard like Qualcomm's Quick Charge, OnePlus made its own "Dash Charge" system. Dash Charge promises a 60% charge on your OnePlus 3 in just 30 minutes, which is just as fast as any other system — the only catch here is you'll have to use the Dash Charger in the box and the included cable.
Your OnePlus 3 will charge just fine off of other chargers — whether they're Quick Charge 3.0, Nexus Rapid Charge or something else — but you just won't get Dash Charge speeds."

I have the oneplus power bank, I'll see how it charges using the cable that came with the phone.
Sent from my ONEPLUS A3000 using XDA-Developers mobile app

Royaledevil said:
I have a MI 16,000 mAh portable charger with an output of 3.6A. I am getting a pretty awesome speed on 1 min per percent charge. After charge battery drain is lower compared dash charger.
Click to expand...
Click to collapse
Seemed like a good choice as outputting 3.6A would be good enough for me. Would you be able to point me a link where to purchase it from? Many thanks.

are you sure the 3.6a isnt a maximum of all the ports on the bank?
usually if they have multiple ports they say a maximum load for all being X, but I've only ever seen a maximum amperage of 2.4a on a port (few and far between) most 2.1a as stated per port.
even then they charge my OP3 at 1.2a using oneplus's cable, same as my s5 beforehand.
there is a great app on the store called Ampere which tells you your current charging/discharging amps

superbrowndude said:
I have the oneplus power bank, I'll see how it charges using the cable that came with the phone.
Sent from my ONEPLUS A3000 using XDA-Developers mobile app
Click to expand...
Click to collapse
and ?? whats the verdict ?

It's never going to charge faster then 2amp on any ordinary charger or battery pack
If you want fast charging u need to use a dash charger
Sent from my ONEPLUS A3000 using XDA Free mobile app

Royaledevil said:
I have a MI 16,000 mAh portable charger with an output of 3.6A. I am getting a pretty awesome speed on 1 min per percent charge. After charge battery drain is lower compared dash charger.
Click to expand...
Click to collapse
Link to that powerbank please

Framedtrash said:
It's never going to charge faster then 2amp on any ordinary charger or battery pack
If you want fast charging u need to use a dash charger
Click to expand...
Click to collapse
Check my post on another thread,
You can use OPPO VOOC Powerbank,
It charge as fast as at least 3.5A

It would not be charging at 3+amp
Unless your using a dash charger your never going to be able to charge over 2amp using any other charger
Doesnt matter what the output of the charger/battery pack is the phone will never take more then 2amp unless its a dash charger
Sent from my iPhone 4S using XDA Free Mobile App

Hastaloego said:
and ?? whats the verdict ?
Click to expand...
Click to collapse
Same question, if he doesn't answer. I'm gonna have to test it out when I get my OnePlus 3 package. On 23rd September. @superbrowndude please give us result

Framedtrash said:
It would not be charging at 3+amp
Unless your using a dash charger your never going to be able to charge over 2amp using any other charger
Doesnt matter what the output of the charger/battery pack is the phone will never take more then 2amp unless its a dash charger
Sent from my iPhone 4S using XDA Free Mobile App
Click to expand...
Click to collapse
No offense but this is a flawed theory, did you forget what site you're on? That's what development is for, to boldy go where no one has gone before, so contrary to your belief, I'm sure its possible, can and will happen.

OP3 is only able to charge at 1.5A max with everything except the dash charger and cable, from my tests.

BoiBundy said:
No offense but this is a flawed theory, did you forget what site you're on? That's what development is for, to boldy go where no one has gone before, so contrary to your belief, I'm sure its possible, can and will happen.
Click to expand...
Click to collapse
No it is not a flawed theory. The phone does not have the quick charging components in the phone but instead in the charger and cable. Only VOOC and DASH chargers will quick charge this phone. It's not theory it's fact. Anyways fast charging does deteriorate the battery a bit faster than normal charging so it's not good to use it all the time

crzykiller said:
No it is not a flawed theory. The phone does not have the quick charging components in the phone but instead in the charger and cable. Only VOOC and DASH chargers will quick charge this phone. It's not theory it's fact. Anyways fast charging does deteriorate the battery a bit faster than normal charging so it's not good to use it all the time
Click to expand...
Click to collapse
Here's what you wrote: "It would not be charging at 3+amp
Unless your using a dash charger your never going to be able to charge over 2amp using any other charger
Doesnt matter what the output of the charger/battery pack is the phone will never take more then 2amp unless its a dash charger"
You said with conviction that "the phone will 'NEVER' take more [than] 2 amp unless its a dash charger"
The VOOC charger is in fact 'not' a dash charger and it charges above 2 amps. So very simply, your postulation is wrong. I took notice that you quickly changed your stance but forgot how convinced you seemed to be.
All of this leads me to believe that there are other chargers even beyond the VOOc and the Dash that can/will fast charge the One plus 3

What's the easiest way to test what amperage a non-Dash charger is charging at? I'm curious to know if some of my Quick Charge adapters will provide 2.4A. I've only done a very brief test with my QC3 car charger, but it gave me 3% in about 4 minutes. That's about what I was getting on a QC2.0 phone, and that's perfectly acceptable in my books.

BoiBundy said:
Here's what you wrote: "It would not be charging at 3+amp
Unless your using a dash charger your never going to be able to charge over 2amp using any other charger
Doesnt matter what the output of the charger/battery pack is the phone will never take more then 2amp unless its a dash charger"
You said with conviction that "the phone will 'NEVER' take more [than] 2 amp unless its a dash charger"
The VOOC charger is in fact 'not' a dash charger and it charges above 2 amps. So very simply, your postulation is wrong. I took notice that you quickly changed your stance but forgot how convinced you seemed to be.
All of this leads me to believe that there are other chargers even beyond the VOOc and the Dash that can/will fast charge the One plus 3
Click to expand...
Click to collapse
Huh? that's my first comment lol and VOOC and DASH are exactly the same technology and have their specific patent. As far as I know, it will only charge with those specific chargers since it is not only the charging brick holding some proprietary charging solution but also the cable. I have a USB-C cable that can withstand over 4A but will not work even when plugged to the DASH charger. Now yes there may be a charger that quick charges this phone but it'd be very unlikely that it does exist since the cable and brick would have to have the exact specifications as the DASH/VOOC chargers.

BoiBundy said:
Here's what you wrote: "It would not be charging at 3+amp
Unless your using a dash charger your never going to be able to charge over 2amp using any other charger
Doesnt matter what the output of the charger/battery pack is the phone will never take more then 2amp unless its a dash charger"
You said with conviction that "the phone will 'NEVER' take more [than] 2 amp unless its a dash charger"
The VOOC charger is in fact 'not' a dash charger and it charges above 2 amps. So very simply, your postulation is wrong. I took notice that you quickly changed your stance but forgot how convinced you seemed to be.
All of this leads me to believe that there are other chargers even beyond the VOOc and the Dash that can/will fast charge the One plus 3
Click to expand...
Click to collapse
Haha
As stated VOOC and DASH are the exact same thing, VOOC was created by OPPO and the rebranded by oneplus
No amount of software is going to change a hardware limitation
I guess your going to tell me that a dev is going to release a software patch that restores the headphone jack on a iPhone
Download ampere from the playstore if you want to get a rough idea of what your device is charging at
Sent from my iPhone 4S using XDA Free Mobile App

fp1707 said:
Same question, if he doesn't answer. I'm gonna have to test it out when I get my OnePlus 3 package. On 23rd September. @superbrowndude please give us result
Click to expand...
Click to collapse
Same question. Really interested in the Oneplus Power Bank charging results. Please.