I have a standard Google Pixel running stock Android 7.1. I notice that when I charge the device using the supplied charger and cable, it says "Charging Rapidly", which makes sense. However, when I use the supplied cable and plug it into a QC3.0 Charging port, it also says charging rapidly. What's even weirder is that using a standard Xiaomi power bank also causes the device to say charging rapidly.
I understand that the power bank wouldn't charge it faster or even as fast as with the USB C PD charging, so my questions are, why does it still say charging rapidly, and is the QC3.0 Port actually doing anything for it's charging speed?
Stanley Richards said:
I have a standard Google Pixel running stock Android 7.1. I notice that when I charge the device using the supplied charger and cable, it says "Charging Rapidly", which makes sense. However, when I use the supplied cable and plug it into a QC3.0 Charging port, it also says charging rapidly. What's even weirder is that using a standard Xiaomi power bank also causes the device to say charging rapidly.
I understand that the power bank wouldn't charge it faster or even as fast as with the USB C PD charging, so my questions are, why does it still say charging rapidly, and is the QC3.0 Port actually doing anything for it's charging speed?
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Use a battery app to measure the power supplied. See if its different or same for different cables.
Related
Is any difference charging my DHD form PC's USB then charging from original charger ?
I may be wrong, but I think wall charger provides more power than USB or car dock
Sent from my Desire HD using xda app-developers app
I've read many times that using USB, you battery might last longer than using the wall charger. I've never noticed this...
USB seems a bit slower than the wall charger but other than that seems the same.
Install Battery Monitor Widget, and you will see how much current each option gives at different levels of charge.
To be exact, the device DRAWS current, it's not a question of the highest output being the best. If the device can't receive more juice, the additional output cannot be used.
When the battery is nearly empty you will see the biggest current draw - as the charge gets closer to 100%, the amount the device draws drops, until it reaches 0mAh on full charge.
My OEM wall charger provides up to 1000mAh, and the PC USB provides 500mAh, you will initially charge the device faster with the wall charger, until the current drawn by the device drops beneath 500mAh - after which point they will charge equally fast.
That, in the case of my phone (with a Mugen 1500mAh battery) happens around the 60% charge mark. So if the charger outputs are as mentioned above, you wouldn't see any difference in the rate of charging after 60%
HTC wall charger can output 1A with data pin short-circuit. PC USB can output 500~600ma or 1A on some laptop but no data pin short-circuit.
Fast charge mode is 900mA. It is on when data-pin short-circuit is detected OR on a fast-charge enabled ROM (or say, kernel).
Otherwise, it only pull 500ma.
Use your battery in your way. Charge it when you like. DHD can replace battery.
Stating the obvious BUT, of course, you can access your phones storage when connected to PC via USB for charging!
---------- Post added at 10:30 AM ---------- Previous post was at 10:13 AM ----------
Also, be careful of using unpowered USB hubs - there may not be sufficient power on the port to charge effectively.
I think charger will have more power. :cyclops:
A wallcharger will always push more amps to the phone.
Don't get confused by people telling you, that wallcharging will damage your battery! That's just not true.
Every phone has an inbuild unit, that controls the amps going to the battery.
Charger outputs more power and therefore it charges faster. Some kernels have the option called "fast charge" which allow you phone to drain more power from the PC and allow it to charge almost as fast as via charger. You can not access files while connected to the PC if the "fast charge" option is enabled.
As already stated above, AC charging is generally faster.
Now many people say that charging by USB will make your phone last longer, but from my personal experience is quite opposite, plus, usb charging is easily interrupted (PC hibernating, stand-by, restarting, etc...). if you are comfortable with both ways (neither PC nor wall outlet too far away), use wall AC.
interesting, i noticed charging via AC (wall) gives my dying battery that extra oomph and seems to make my phone last longer in the day
I think Charger is always best than PC charging.
Its fast.
AC charging is faster due to a higher voltage and ma charge rate
USB uses a much more lower voltage and ma charge rate, it is true that USB charging is SLOWER and a myth is that USB charging does make your battery last longer.
On sense 2.1 I noticed my battery last 4 days with low - medium ussage because I only charged with USB but now I charge with AC with medium ussage my battery lasts a day.
With kernel tuner you can add a 4x4 widget which can tell you the voltage and mah raise / drain
Sent from my HTC Desire HD using xda app-developers app
I think the power if you charger the mobile from Charger it will be faster more than PC charging
-SmOgER said:
As already stated above, AC charging is generally faster.
Now many people say that charging by USB will make your phone last longer, but from my personal experience is quite opposite, plus, usb charging is easily interrupted (PC hibernating, stand-by, restarting, etc...). if you are comfortable with both ways (neither PC nor wall outlet too far away), use wall AC.
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+1. I vote AC charging
Charging with Original charger is awesome
Charging from Orginal charger takes less time then chargin from a pc usb
Charging from charger is faster, but charging from USB is more stable, as far as I know...Because it has a balanced voltage all the time. Not sure though. Just heard from somewhere.
Yesterday I purchased a Samsung Galaxy note 10.1 when I tried to charge it for the first time it draw a red X on the battery when I connected to the wall charger and it is charged but in very slow manner then i turned off and left it about 17 hours and when I came back I saw the battery charging picture on the screen so I turned it on and the battery has 100% capacity but after i remove the charger I feel it discharge in a fast manner
I tried to charge it from my laptop but the same thing I have a red X on battery when connecting it. I don't know what is the problem the android versing on my tablet is 4.1.2 plz any help.
Mhd-kou said:
Yesterday I purchased a Samsung Galaxy note 10.1 when I tried to charge it for the first time it draw a red X on the battery when I connected to the wall charger and it is charged but in very slow manner then i turned off and left it about 17 hours and when I came back I saw the battery charging picture on the screen so I turned it on and the battery has 100% capacity but after i remove the charger I feel it discharge in a fast manner
I tried to charge it from my laptop but the same thing I have a red X on battery when connecting it. I don't know what is the problem the android versing on my tablet is 4.1.2 plz any help.
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Get a 1A charger or higher. Below that, it can only trickle charge or when it is off, as it consumes more power than it can get.
Mhd-kou said:
Yesterday I purchased a Samsung Galaxy note 10.1 when I tried to charge it for the first time it draw a red X on the battery when I connected to the wall charger and it is charged but in very slow manner then i turned off and left it about 17 hours and when I came back I saw the battery charging picture on the screen so I turned it on and the battery has 100% capacity but after i remove the charger I feel it discharge in a fast manner
I tried to charge it from my laptop but the same thing I have a red X on battery when connecting it. I don't know what is the problem the android versing on my tablet is 4.1.2 plz any help.
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Click to collapse
You don't supply enough info for us to be able to help you.
We need to know:
What charger do you use ? (stock charger or 3rd party charger)
What cable do you use ? (stock cable, 3rd party charger or using extension cable in combination with the previously mentioned cable(s))
Your cable & charger condition (very well stored & treated, abused or both);
Your GT-N80XX purchased condition (new,refurbished or used)
FYI:
GT-N80XX need around 2.1A or 2100mA in order to Fast Charge & a specially conditioned charger designed for GT-80XX.
Your laptop/computer USB 1.0 - 2.0 ports supply only 0.5A or 500mA while USB 3.X supply only 1A or 1000mA.
Third Party charger usually only supply 500mA - 1000mA unless it's stated clearly that it is a 2100mA charger.
GT-N80XX battery capacity is 7000mAh so you can count yourself how long it will charge using those power sources.
The cable itself also a bit different than most USB cable.
Most USB cable designed to only delivers 500mA up to 1000mA, some even designed to only delivers 500mA.
That's also applied to USB extension cable.
I also found many charging problem just because of the owner's abusive behavior toward it's cable/charger such as:
Trip over their cable/charger
Step on their cable/charger
Throwing their cable/charger after use
Rolling their cable in a way that it twists the cable so bad & breaks it.
"Broken" cable/charger sometimes seems to be OK,but it won't deliver it's full capacity when used for charging.
The Red X icon is showing you that the current isn't sufficient enough for it to do Fast Charging (2100mA)
dwegiel said:
Get a 1A charger or higher. Below that, it can only trickle charge or when it is off, as it consumes more power than it can get.
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thanks for your reply.The charger that I am using it is the original one that came with tablet
d4rkkn16ht said:
You don't supply enough info for us to be able to help you.
We need to know:
What charger do you use ? (stock charger or 3rd party charger)
What cable do you use ? (stock cable, 3rd party charger or using extension cable in combination with the previously mentioned cable(s))
Your cable & charger condition (very well stored & treated, abused or both);
Your GT-N80XX purchased condition (new,refurbished or used)
FYI:
GT-N80XX need around 2.1A or 2100mA in order to Fast Charge & a specially conditioned charger designed for GT-80XX.
Your laptop/computer USB 1.0 - 2.0 ports supply only 0.5A or 500mA while USB 3.X supply only 1A or 1000mA.
Third Party charger usually only supply 500mA - 1000mA unless it's stated clearly that it is a 2100mA charger.
GT-N80XX battery capacity is 7000mAh so you can count yourself how long it will charge using those power sources.
The cable itself also a bit different than most USB cable.
Most USB cable designed to only delivers 500mA up to 1000mA, some even designed to only delivers 500mA.
That's also applied to USB extension cable.
I also found many charging problem just because of the owner's abusive behavior toward it's cable/charger such as:
Trip over their cable/charger
Step on their cable/charger
Throwing their cable/charger after use
Rolling their cable in a way that it twists the cable so bad & breaks it.
"Broken" cable/charger sometimes seems to be OK,but it won't deliver it's full capacity when used for charging.
The Red X icon is showing you that the current isn't sufficient enough for it to do Fast Charging (2100mA)
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Click to collapse
Thank a lot for your reply.I use the original Samsung charger that came with the tablet with the original cable and I don't understand what do you mean by 3rd party charger but I read on the charger that its output is 5V - 2A. I read from another forum that the problem may be from the version of android which is on my tablet 4.1.2 but I am not sure about that.
As far as I know, if you plug in your Nexus5 (or any phone) into a power source with high amperage (>1A), your phone should utilize the amps it actually needs to charge at full speed (AC Charging).*
For example, if i plug my Nexus 5 into a 2.1A charger, it will charge just fine and draw only the required amps needed.*
Ive noticed my phone (rooted with faux) and my wifes (stock) and very finicky when it comes to the amps a charger uses. *It appears that if a charger is not exactly 1.0A or 1.2/1.3A, the phone charges as USB and not AC (no matter which USB cable I use). *Below is what I have found out, *with charge type/amp and how the phone sees it
Stock charger (1.2A) - AC
Anker 25W 5-Port Wall charger (1A Android port) - AC
Anker 25W 5-Port Wall charger (1A iPhone port) - USB (not sure why??)
Anker 25W 5-Port Wall charger (1.3A Galaxy Tab Port) - AC
Anker 25W 5-Port Wall charger (2.1A iPad ports) - USB
Anker E4 13000mah battery (2A) - USB
ANker E4 13000mah battery (1A) - AC
Anyone else experience this?
Sent from my Nexus 5 using Tapatalk
What you've observed here actually has nothing to do with the amperage of your ports and everything to do with how their data pins are wired. The N5 (and most other android devices) looks for the data +/- pins in the USB port to be shorted together, this is how it determines it's connected to a charger. Apple devices do this differently, they look for a specific combination of voltages to be present on the data +/- pins. When you connect your N5 to an Apple port, it ignores these voltages and just charges as if it were connected to a PC.
Now the fact that it sees the Galaxy Tab port as a charger is kind of interesting because the Tab uses yet another method for charger detection. It looks for resistors of a specific value connecting the data +/- pins to the power +/- pins. Cool that the N5 recognizes this configuration as well.
Anyway, this is why your Anker charger has ports dedicated to specific devices, each one is configured a little differently.
That would make sense, however, I would expect the same thing on my Nexus 4 but that doesn't happen. It charges as AC for every port
Sent from my Nexus 5 using Tapatalk
It could simply be that the N4 uses a different power control IC from the N5 (they almost certainly do). That and the software controlling the charging determine whether the phone enables AC charging from different ports or not.
I believe (I have not tried this) that some custom kernels have a setting that enables fast charging unconditionally, to draw as much current as the hardware allows.
Yeah I'm waiting for a kernel to support Fast charge, don't believe any do at the moment
Sent from my Nexus 5 using Tapatalk
the phone may revert to lower power usb charging if some condition isn't met... the phone is completely ignorant of the rated power of the wall wart. current is drawn, it depends on ohms.. so it has nothing to do with the "power output." what i mean is there is no situation where too many amps is going to trigger something in the phone, the phone controls the amps and is ignorant of the max the supply can give unless the phone actually exceeds that and detects a voltage drop, the supply can't force more amps without raising voltage to do so but that's just not how these devices work. so it's not because of the amps of the charger, it must be some other aspect.
what the phone can see is voltage. the state of the microusb "Id" pin (which will probably be open if you are using a data cable and not a specific dock to put it in desk mode or car mode, not that i think the n5 has those modes, but the Id pin is what tells the phone these things, as well as set them into download mode to flash them) and the state of the data pins. generally the data pins need to be shorted together to tell the phone to go into ac charging.
it's possible however that if the voltage is lower than 5v, the phone assumes there is voltage drop from too low a power rating on the supply and it's unable to supply the current. in this situation the phone may default to a lower current charging mode. some ac chargers may not go all the way to 5.0v they may put out as low as 4.45v... if the voltage is either low or unstable from the "high output" charger it may cause the phone to think it has exceeded the output rating of the supply when infact it's just getting unclean power. try it with an official tablet charger for a kindle or something and not a store bought anything..... some of the high output chargers just have substandard regulators and/or filtering.
there may also be more to this. usb 3.0 has a higher current rating than usb 2.0 if the phone can detect the type of port it's connected to, that may also determine the charge mode.. (in thoery anyway, no reason it can't work that way, but i can't say i know that it does on any current device)
It's getting pretty aggravating now that my Nexus 5 charges as USB when connected to my anker slim 2 1A external battery as well as my anker astro e4 1A port. No reason why it should do this
Sent from my Nexus 5 using Tapatalk
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
jalanjkcarp said:
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
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Click to collapse
Oh thanks for that tip. I'll order one on Amazon right now and update this thread
Sent from my Nexus 5 using Tapatalk
What happens if you connect an Apple device to one with the shorted pins?
Earth explodes
Sent from my Nexus 5 using Tapatalk
jalanjkcarp said:
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
Click to expand...
Click to collapse
Tested the new USB cord on all ports, charges as AC. Thanks a lot
Sent from my Nexus 5 using Tapatalk
When im using my nexus 5 in a car, or when powered form anything other than the official charger it takes for ever to charge.
If left overnight this isn't a problem, however when in a car charging from the lighter socket my nexus looses charge when streaming audio and using the gps.
The only thing ive noticed is that it appears to have three charge modes:
Wireless - charges reasonably fast
AC charges fast, but only appears on the standard charger with the standard lead
and USB when it charges slowly, or even looses charge.
any way to enable to AC mode when its connected to another ( ie third party ) charger?
it would depend where you plug in. via wall charger will be ac, via any other place itll be usb. and when usb, it will charge much slower than with a wall outlet(ac). that is normal and how its supposed to work. and if you are using a 3rd party charger, make sure it has the same voltage that the default charger has, or it will charge slower.
third party charger, mains output 5v dc, 2.1 amp, nexus charges slowly says it's usb. in car adaptor 1.5amp, 5 volt slow charge.
all checked with multimeter for output values etc.
2Pints said:
third party charger, mains output 5v dc, 2.1 amp, nexus charges slowly says it's usb. in car adaptor 1.5amp, 5 volt slow charge.
all checked with multimeter for output values etc.
Click to expand...
Click to collapse
Maybe you are using a thin cable?
Yup, it'll be the cable
Sent from my Nexus 5 using Tapatalk
I agree that it's probably due to the cable.
One thing that I've noticed (especially with a couple of my LG devices that have fast charge and it's more noticeable) is that a thicker data sync cable works better than a standard charge only cable, which are usually thin.
You could also try a kernel that has USB fast charge.
My Poco F2 Pro charges fine (and very fast) with a USB-C to USB-C cable connected to a USB-C fast charger such as a Samsung. But if I try to charge it with a USB-A to USB-C cable connected to any charger, the phone only draws 0.5A ( I have a USB power dongle to check this ) and that's not fast enough to actually keep the phone charged when in use.
Every other phone I've tried will at least draw over an amp, even those which support fast charging.
I've tried multiple chargers, multiple cables, and nothing except C-C with fast charging will actually charge the phone.
Is this normal behaviour for the phone, or do I have a fault with mine. (It was bought second-hand with a warranty, but no charger or cable in the box).
No it's not normal, mine charges at least at QC3 speeds with various compatible chargers, powerbank and cables. Even with Huawei's fast charger, which seems not to be fully compatible, it charges about 2A (measured in accubattery).
It has a strange behavior if it's like that. What about original cable and charger, that's A to C, should charge very fast.
I had another issue regarding charging, whichever charger/cable I was using (let's say max 5V/2A), in accubattery it was measured around 3A, and the charger would overheat like crazy. You know when you want to charge slower, all what they tell you on the web is to use a less powerful charger... and this is what I did, but not with great results though. On my previous phone it was working just fine. On my wife's Mate20Pro it's also working well, but not on F2Pro. Even if the cable was rated 3A and I would connect it to the original charger, it would still draw 5A from it... Only way to solve it was AccA apk so I limit the current that the phone draws and I'm happy.
valy_cta said:
It has a strange behavior if it's like that. What about original cable and charger, that's A to C, should charge very fast.
I had another issue regarding charging, whichever charger/cable I was using (let's say max 5V/2A), in accubattery it was measured around 3A, and the charger would overheat like crazy. You know when you want to charge slower, all what they tell you on the web is to use a less powerful charger... and this is what I did, but not with great results though. On my previous phone it was working just fine. On my wife's Mate20Pro it's also working well, but not on F2Pro. Even if the cable was rated 3A and I would connect it to the original charger, it would still draw 5A from it... Only way to solve it was AccA apk so I limit the current that the phone draws and I'm happy.
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Click to collapse
Unfortunately I don't have the original charger and cable as it was a used phone which is otherwise in perfect working order. I've had no problems with c-c fast chargers, but nothring else works.
bilkusg said:
Unfortunately I don't have the original charger and cable as it was a used phone which is otherwise in perfect working order. I've had no problems with c-c fast chargers, but nothring else works.
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Click to collapse
What ROM is on the phone right now? May I suggest going completely stock with MiFlash to rule out the software part?
bilkusg said:
My Poco F2 Pro charges fine (and very fast) with a USB-C to USB-C cable connected to a USB-C fast charger such as a Samsung. But if I try to charge it with a USB-A to USB-C cable connected to any charger, the phone only draws 0.5A ( I have a USB power dongle to check this ) and that's not fast enough to actually keep the phone charged when in use.
Every other phone I've tried will at least draw over an amp, even those which support fast charging.
I've tried multiple chargers, multiple cables, and nothing except C-C with fast charging will actually charge the phone.
Is this normal behaviour for the phone, or do I have a fault with mine. (It was bought second-hand with a warranty, but no charger or cable in the box).
Click to expand...
Click to collapse
Just search and buy original charger if u want full charging speed, one guy made a great test of different chargers and different cables on this phone, check this here https://forum.xda-developers.com/t/poco-f2-pro-charging-study-how-fast-does-it-charge.4189013/
There's something wrong with his device.
0.5 A is too low for any charger.