Fast charging doesn't work but normal charging does? - Google Pixel 2 XL Questions & Answers

Recently, my P2XL has been acting up. For a while my charging has been intermittent. Thinking it was a loose cable, i tried others. It had the same problem. But recently, my charging stopped working at all. I swapped to a normal usb charger (a canakit pi 4 power brick) and it is working fine. For some reason, normal chargers are working, but when i plug it into a PD charger, i either get nothing, or in the case of plugging it into my laptop dock that's usb c just to test, it rapidly tries to charge and fails. I cleaned my pins with isopropyl alcohol and it still happens. any ideas? is my phone biting the dust? Also it doesnt charge with pd when the power is off either

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not charging via usb?

so the option to not charge it is not ticked under power settings, and its set to charge via usb from advanced config and still no dice.
tried different usb ports and nothing
the led is orange, says its charging in power options
any thoughts?
Try a diffrent usb cable, some cables do not provide enough power to charge the phone. (guessing maybe they are old 1.1 cabels). But I know I have a few cables around that dont charge my phone and they also will not work with my portable external usb hard drive because they wont provide enough power for it. But they work just fine with my digital camera.
I´ve read somewhere that disabling USB charging is better for the battery life, so I have it disabled.
You've tried different USB ports, but were they on the different computers?
so i've tried different cables, different ports and 2 different PC's and 2 different laptops.
I know its not the cable i'm currently using because i plugged it into one of those A/C to USB adapters and charged fine.
I'm starting to think its my batter,
If you have tbattery installed, do u get values for all the boxes?
All mine except 3 or 4 are 0 :/
Well, you are not the only one having this problem. Mine is brand new. I started setting it up last night and had it hooked to the computer via usb. I installed a few .cabs such as google maps, myphone, and a few tweaks such as tether, disable sent notification, enable all camera modes, and manila start menu unlocker. While it was connected it said it was charging. When I went to bed I turned it off and connected it to another usb cable on another computer which is an a/c hub. I went to turn it on this morning and thought it was strange it was not fully charged. I continued to set it up a bit and take it for a spin. After a while I turned it off again and hooked it to the usb a/c charger again. I just tried turning it on and nothing was happening. I connected it to the usb again and it finally turned on, but I checked the battery level and it was at 0% and turned off. I have it connected to the a/c charger and giving it a little bit to see what will happen. One thing that seems strange is that the battery discharged more while it was off and attached to the usb a/c hub during the afternoon causing it to refuse to turn on at all. Any thoughts?
fone_fanatic said:
so i've tried different cables, different ports and 2 different PC's and 2 different laptops.
I know its not the cable i'm currently using because i plugged it into one of those A/C to USB adapters and charged fine.
I'm starting to think its my batter,
If you have tbattery installed, do u get values for all the boxes?
All mine except 3 or 4 are 0 :/
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Click to collapse
I think the odds are pretty good it's your battery. The orange light means power is going through the charging circuit, so you obviously have your settings correct.
I'm guessing you're in Austin or near? If you want to try popping my battery in it for a few minutes and see if it charges fine then, PM me and we can set something up.
the same thing is happening with mine. Sometimes it will charge, sometimes it wont. weird thing is that it only started doing this a few days ago... i know nothing has changed ROM wise, so only things i can think now is maybe the actual USB connector on the phone or the battery, but since I am getting a charge via wall chargers im not sure what to think lol
Just an update.
If i have the USB cable plugged in (and car charger to which doesn't charge as well ) after 15 min or so a warning appears saying that the current is too low to charge the device. Either closed unused apps or switch to a/c power.
I've ordered a 1800mah Mugen Power Battery. Gonna see if it resolves the issue, if it does then i'm gonna call at&t and see if they'll swap my battery for me.
I have found as have others here after reading some posts that if the phone is almost dead or battery is very low then it will not charge via the USB anymore. The orange light goes on and it says that its charging but the charging circuit seems to be protecting the phone and not letting the battery charge.
The only solution I have found, and it has only happened twice so far is to plug it into a wall charger and fully charge the battery. It will then charge via USB again and all is good. I normally only charge my phone with usb while connected to Activesync but once in a while you seem to need to top it up with a wall charger.
It is also highly recomended not to run Lithium Ion batteries right out.
How do you know it is not charging?
There is a difference in the wiring from a wall charger and a USB charger. There is a signal line in the wall charger telling it to charge at near 1000ma. In the USB cable that line tells it to limit the charge current to 500ma. That is the limit for current that you should pull from a USB port. If you are using the unit heavily, you may actually need more then the 500ma., those running the battery down possibly.
If the unit is idle, it will still take much longer to charger from USB then off of a wall charger.
worwig said:
How do you know it is not charging?
There is a difference in the wiring from a wall charger and a USB charger. There is a signal line in the wall charger telling it to charge at near 1000ma. In the USB cable that line tells it to limit the charge current to 500ma. That is the limit for current that you should pull from a USB port. If you are using the unit heavily, you may actually need more then the 500ma., those running the battery down possibly.
If the unit is idle, it will still take much longer to charger from USB then off of a wall charger.
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If you are asking me, I know it was not charging because I also had the "not enough power to charge message" and the phone went from about 15% when I plugged it in to stone cold dead by the morning. The whole time it was pluged into a computer I have used repeatedly to charge it with. I then put it on a AC charger and it went to full charger in about an hour and a half or so.

[Q] Not sure how charger works on this phone?

Anyone know what needs plugging in to get this phone to charge please? I have always used it with both cables plugged in. Suddenly I am trying not to bother using the USB cable and it only charges in the cradle for a minute or so before the orange light goes off. With the phone plugged in OR with the battery plugged into the slot on the cradle. (therefore this doesnt seem to be to do with the charging circuits in the phone itself). I dont think it has always done this.
So I tried plugging the USB cable back in and hey presto, my brand new battery starts to charge properly.
Does anyone know if this means that the ac adapter connected to the cradle is malfunctioning and not putting out enough power? Or enough power constantly enough to continue putting out the necessary 5v? Or is it only supposed to work with both cables plugged in? When I unplug the ac adapter, the battery stops charging so I cant figure out where the cradle is getting its 5v to charge! Other have reported, worryingly, that the unit should charge with the USB cable alone.
I did look at http://forum.xda-developers.com/showthread.php?t=282983 but they all talk about after market chargers not working, whereas I am pretty sure mine is the original Siemens sx66 charger. Does anyone think that the adapter is failing and eventually BOTH the power cable AND the USB cable wont put out enough power to charge the unit?

Not properly charging

My resent pi started acting up... Fast charging doesn't work at all only when wireless fast chargeing... Only cable charging and that is it some time cable seem to disconnect and connect by ore self and suggestion on what to do
vasiaua said:
My resent pi started acting up... Fast charging doesn't work at all only when wireless fast chargeing... Only cable charging and that is it some time cable seem to disconnect and connect by ore self and suggestion on what to do
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I would suggest two things... Start with blowing out any dust/crud stuck in the charging jack on the bottom of the phone. If still not charging properly, replace your charging cable with a new Samsung cable meant for the phone. I'm not 100% sure on our Note 5, but previously it takes an original Samsung cable to be sure you get proper (and fast) charging. If you do both of those things and it still doesn't charge properly, there might be damage to the charger port.
mattern1974 said:
I would suggest two things... Start with blowing out any dust/crud stuck in the charging jack on the bottom of the phone. If still not charging properly, replace your charging cable with a new Samsung cable meant for the phone. I'm not 100% sure on our Note 5, but previously it takes an original Samsung cable to be sure you get proper (and fast) charging. If you do both of those things and it still doesn't charge properly, there might be damage to the charger port.
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Weird after I post this post it worked... What I did bleeds the dust out it took a touth pick and cleaned it and now it works yay
vasiaua said:
My resent pi started acting up... Fast charging doesn't work at all only when wireless fast chargeing... Only cable charging and that is it some time cable seem to disconnect and connect by ore self and suggestion on what to do
Click to expand...
Click to collapse
This happened to my Note 5 as well. Using a new usb cord works temporarily, but always goes back to not being able to fast charge eventually.
The fix I did and works, use a small instrument (tweezers, knife, etc.) and carefully bend the usb pin up (towards the screen) a little bit. Fixed mine completely, now my Note 5 fast charges 100% of the time, links to my desktop, and whatever else I connect it too.

Erratic Charging

As of today, when I plug in the charger it will show the Dash charging symbol, then cut in and out a few times before it stays charging. I updated to 5.0.3 yesterday if it means anything.
Is this normal? I couldn't find anyone else reporting this.
It happens to me too, even back in Nougat. It starts as regular charging and then a couple of seconds later, switches to Dash. I figure the delay is due to the charger and phone figuring out how much battery the phone has left to determine how much amps to push through. Dash charging operates at different amperages depending on the voltage of the battery. Thing is, that either that never seemed to happen on my OnePlus 5 or I never noticed it, but on the 5t it does.
I think I'd be more comfortable with your issue. When I see the charging LED flashing and the charging notification disappearing and reappearing, it's unsettling.
My Nexus 5X would do this as pocket lint would build up in the USB port, preventing the USB cable from fully seating. Every so often I would have to take a small needle (something non conductive would probably be better) and carefully clean around the edges to pull out the lint. I was always amazed at how much build up really does end up in the USB port and headphone jack.
I used to have that issue with old micro USB ports and this definitely reminds me of that. I'm concerned though because I've had the phone less than a week and the port is clean. I also get that satisfying 'click' when plugging in the charger.
Ah, well that probably isn't your problem then. I would try another charger and cable to try and isolate the problem between the phone, cable, and charger.
Remember the OnePlus cable is unique, you can't use just any USB C cable with the dash charger. I believe IIRC the OEM cable has a 10k resistor, while most in spec USB C cables will have a 56K resistor. However you can use another charger and cable and see if it cuts out as well.
OhioYJ said:
Ah, well that probably isn't your problem then. I would try another charger and cable to try and isolate the problem between the phone, cable, and charger.
Remember the OnePlus cable is unique, you can't use just any USB C cable with the dash charger. I believe IIRC the OEM cable has a 10k resistor, while most in spec USB C cables will have a 56K resistor. However you can use another charger and cable and see if it cuts out as well.
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We have three 5t phones here all purchased last week. I tried all three charges that came with the phone and it does this with each one, all plugged into different outlets.
We updated a 2nd one to 5.0.3 and now this one also has the charging notifications flicker on and off about 7 times before it stays charging normally. I haven't tested the 3rd yet because it was fully charged when I came home.
It's odd that it is two of our devices now doing this and I haven't seen anyone else with this problem. I would assume that we got phones out of a defective batch, but they were definitely not doing this before the update.
Just an update, I wiped system and cache and it still does this.
It didn't do it when I plugged in at 88% immediately after wiping. But it does do it when I plug in at around 30% like I usually do.
I'm wondering now if they all do this after the 5.0.3 update and no one really notices.

USB charger not compatible. completely dead.

I'm half way sure what the problem is but I want to get my thoughts straight.
Phone doesn't charge at all. No vibration. Nothing. Before it was detecting the charger and it would behave like it was accepting the charge for 10mins, after it would show the "USB charger not compatible" thingo.
I believe it's either the charging circuits or the battery. What do you guys believe?
It can be a faulty cable or a faulty charging port or the cable connecting the sub-board to the motherboard (that cable also holds the SIM and SD slots). Take apart the phone and disconnect the battery. Wait for sometime and connect it back. Charge it using a known good USB cable and charger. It might have happened that the phone is in a locked down state due to short circuit protection from the charger.

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