Rapid wireless charging ampere - Google Pixel 3 Questions & Answers

Hi,
If rapid charging is actually working on my Pixel 3, what Ampere should I be getting? If it's 1400mA, is that rapid charging?

I get 900mA with an old nokia wireless charger, displays 'charging slowly' on the lock screen. USB charging displays 'charging rapidly' on the lock screen.
I believe only the pixel stand is authorized to do rapid wireless charging.

pcloadletter1 said:
I get 900mA with an old nokia wireless charger, displays 'charging slowly' on the lock screen. USB charging displays 'charging rapidly' on the lock screen.
I believe only the pixel stand is authorized to do rapid wireless charging.
Click to expand...
Click to collapse
Google is partnering with brands like Belkin to make rapid wireless chargers too, here's one: https://store.google.com/us/product/belkin_boost_charge_pad?hl=en-US
It's only $10 cheaper than the Pixel Stand and does not appear to add any of the other "smart" features, just a charger. It's flat, though.

Related

Pixel C charger

The only charger that's charging my Pixel C is the original charger that came with the device.
I have a number of other chargers here, even a QC3.0 charger, and another USB-C charger (from a Moto Z2). None of them is charging the Pixel C! They do light up the charging icon, but when I look into the battery settings, it says: 'not charging'
What are your experiences with charging the Pixel C?
i use the factory charger, the charger from my oneplus 5, and if it is connected to my pc it charges during that time. i remember using a few others also and have had no issues with any specific charge method. in fact, i am sorta surprised by the post. i know the factory charger has a built-in cable, so i might first look at the cable used with any other charger. i bought some usb-a to usb-c cables from amazon and the oneplus 5 is a good usb-a to usb-c cable.
I purchased this from amazon
Anker Quick Charge 3.0 and USB Type-C 24W USB Wall Charger, PowerPort+ 1 for Galaxy C9 Pro, Nexus, Moto and More
I think it came with a cord
Anker PowerLine+ C to C 2.0 cable (6ft), High Durability, for USB Type-C Devices Including Samsung Galaxy S8, S8+, the new MacBook, Nintendo Switch, Google Pixel, Nexus 6P, LG V20 G5 and More
this is optional.
farsiray said:
They do light up the charging icon, but when I look into the battery settings, it says: 'not charging'
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Click to collapse
All my chargers do that, including the original one. It takes maybe half a minute to a minute before this changes to "charging" in battery settings. So it's not a charger problem really.
ASW1 said:
All my chargers do that, including the original one. It takes maybe half a minute to a minute before this changes to "charging" in battery settings. So it's not a charger problem really.
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Click to collapse
well.... it once drained the battery, the screen stayed on because a charger was connected, but it did not actually charge the battery. i thought it was charging, some time later i noticed that it was not!
this and other experiments made me write this question on the forum.
update: due to a problem with the PIN I had to factory reset my Pixel C https://forum.xda-developers.com/showpost.php?p=73807273&postcount=20
and ever since, different chargers NOW do charge the Pixel C!!! strange, but that's how it is now....
Sorry for resurrecting this old thread. Hopefully this may help others with this problem.
I am on my second pixel c and both had/have this problem with aftermarket chargers. For me, the problem is not that the chargers won't charge the unit, but that they won't charge the unit every time they're plugged in. My workaround is to run the ampere app and repeatedly plug the charger into the unit until it shows it charging. Normally it takes no more than 5 tries. It even charges rapidly.
I currently use an anker charger that works as above, my previous charger, Aukey, also worked similarly. Strangely enough, it doesn't matter which end of the cable(usb-c or USB) is removed and reinserted to get the pixel c charging. This proves to me that it's not a bad connection.
I can confirm that the Anker aftermarket charger works great. When I plug in the Pixelbook charger into the Pixel C the tablet will charge but it will reboot android everytime.... Very annoying!
irockthebear said:
I can confirm that the Anker aftermarket charger works great. When I plug in the Pixelbook charger into the Pixel C the tablet will charge but it will reboot android everytime.... Very annoying!
Click to expand...
Click to collapse
any brand cable with 3A (aliexpress) solve your problem
Hi to all
Here you have my experience with my second hand pixel c.
I have tested :
huawei 5v 2A , 9v quick charger Charging ok.
Apple ipad 18w charger. Charges it ok.
Anker 5 ports QC2.0 not charging.
Aliexpress QC 3.0 charges but makes some bad touch screen errors and ghost touchs. It is impossible to use Pixel c.
Huawei 5v 2A. Not charge
With charge i mean in the battery options icon i can see charging...
Thanks to all.

Extra Chargers?

Has anyone found any cheap chargers that can charge this phone like the Essential charger does (really fast)? I have bought two different chargers and neither of them can really even charge the phone. The lock screen says it's charging slowly, and the battery meter acts like it's charging, but it doesn't actually charge. The chargers were both Quick Charge 3.0 chargers too. None of my old phone chargers with a type-c adapter will charge the phone either.
jay_em113 said:
Has anyone found any cheap chargers that can charge this phone like the Essential charger does (really fast)? I have bought two different chargers and neither of them can really even charge the phone. The lock screen says it's charging slowly, and the battery meter acts like it's charging, but it doesn't actually charge. The chargers were both Quick Charge 3.0 chargers too. None of my old phone chargers with a type-c adapter will charge the phone either.
Click to expand...
Click to collapse
Have you tried different cables?
Every charger I own will charge this phone. My Samsung, pixel, Motorola, etc usb type-c chargers will all work.
Sent from my PH-1 using Tapatalk
The phone requires a USB PD (Power Delivery) charger for rapid charging. It must have [email protected] and [email protected]
It doesn't support Qualcomm's Quick Charge.
I ordered this one and it rapid charges. It supports 5V/3A, 9V/3A, 15V/ 3A, 20V/2.25A
https://www.amazon.com/iClever-Delivery-Nintendo-Notebook-Compatible/dp/B07194RXTS/
jay_em113 said:
Has anyone found any cheap chargers that can charge this phone like the Essential charger does (really fast)? I have bought two different chargers and neither of them can really even charge the phone. The lock screen says it's charging slowly, and the battery meter acts like it's charging, but it doesn't actually charge. The chargers were both Quick Charge 3.0 chargers too. None of my old phone chargers with a type-c adapter will charge the phone either.
Click to expand...
Click to collapse
My MacBook pro adapter
Tikerz said:
The phone requires a USB PD (Power Delivery) charger for rapid charging. It must have [email protected] and [email protected]
It doesn't support Qualcomm's Quick Charge.
I ordered this one and it rapid charges. It supports 5V/3A, 9V/3A, 15V/ 3A, 20V/2.25A
https://www.amazon.com/iClever-Delivery-Nintendo-Notebook-Compatible/dp/B07194RXTS/
Click to expand...
Click to collapse
Thanks! Now, what about if I wanted it to just charge normally (not rapidly or slowly) for if if I wanted to leave it charging overnight? Don't think I need to spend the extra money on rapid chargers for that scenario...
jay_em113 said:
Thanks! Now, what about if I wanted it to just charge normally (not rapidly or slowly) for if if I wanted to leave it charging overnight? Don't think I need to spend the extra money on rapid chargers for that scenario...
Click to expand...
Click to collapse
No idea. Honestly, I don't know of anyone who consciously needs to control the speed of their charge. I avoid charging overnight by rapid charging during the day at work.
does it really need PD? they are kind of expensive and there are chargers out there with 5V, 6V, 9V, 12V @ 3A
e.g.:
https://www.amazon.de/CSL-Schnellla...id=1510146615&sr=1-4&keywords=usb+3a+netzteil
Tikerz said:
The phone requires a USB PD (Power Delivery) charger for rapid charging. It must have [email protected] and [email protected]
It doesn't support Qualcomm's Quick Charge.
I ordered this one and it rapid charges. It supports 5V/3A, 9V/3A, 15V/ 3A, 20V/2.25A
https://www.amazon.com/iClever-Delivery-Nintendo-Notebook-Compatible/dp/B07194RXTS/
Click to expand...
Click to collapse
Actually, It *does* support QC 3.0 and USB PD.
compuguy1088 said:
Actually, It *does* support QC 3.0 and USB PD.
Click to expand...
Click to collapse
Essential confirmed on their subreddit that it does not support Qualcomm Quick Charge. It supports USB PD.
Sent from my PH-1 using Tapatalk
Tikerz said:
Essential confirmed on their subreddit that it does not support Qualcomm Quick Charge. It supports USB PD.
Sent from my PH-1 using Tapatalk
Click to expand...
Click to collapse
Then why does the phone indicate it's rapidly charging when plugged into a QC 3.0 charger then?
compuguy1088 said:
Then why does the phone indicate it's rapidly charging when plugged into a QC 3.0 charger then?
Click to expand...
Click to collapse
I'm not sure how Android is programmed to display "Rapidly Charging", but I'm sure it's not by charging standard. Probably based on supplied power, but it definitely doesn't charge as fast as the stock charger. I noticed this with my QC chargers. It will say rapidly charging for a couple minutes and then just not charge at all or say charging slowly. Frustrating as hell so I bought an extra USB PD charger.
My Samsung chargers all work, and charge the phone to 100%. They just say charging, not quick charging, but whatever... The % goes up.
Sent from my PH-1 using Tapatalk
compuguy1088 said:
Then why does the phone indicate it's rapidly charging when plugged into a QC 3.0 charger then?
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Click to collapse
Try using the Ampere app on the Play store. It will show you what amounts of current etc is being used to charge the phone..
USB C Charger,CRDC Quick Charge 3.0 5V/3A 27W Type C Charger for iPhone,Xiaomi,Nexus 6P Nexus 5X,Nintendo Switch,Google Pixel XL
http://s.aliexpress.com/IZBBVbE3
(from AliExpress Android)
I ordered this. Won't be here for awhile though as it's coming from China. I brought the essential because it was cheap, might as well stick to the theme.
compuguy1088 said:
Then why does the phone indicate it's rapidly charging when plugged into a QC 3.0 charger then?
Click to expand...
Click to collapse
Yeah...it doesn't. I'm such a tool I assumed it did and bought two Ankar QC3 wall chargers and a Tronsmart QC3 car charger. None of them are able to charge the phone at all, says that it's charging slowly but doesn't seem as though it's charging at all.
bavarianblessed said:
Yeah...it doesn't. I'm such a tool I assumed it did and bought two Ankar QC3 wall chargers and a Tronsmart QC3 car charger. None of them are able to charge the phone at all, says that it's charging slowly but doesn't seem as though it's charging at all.
Click to expand...
Click to collapse
Phone needs a charger with USB-C Power Delivery and not QC. Anker has at least one model and Incipio has one as well. There are many others on Amazon.. The cool thing about those is that they also change my XPS-13. Only carry one charger when I travel.
I've got a few QC 2/3 chargers and a few USB-C PD chargers and what I've found is that depending on which USB-C to USB-A makes a difference whether I get rapid charge or not.
I'm slowly converting over to USB-C to USB-C but it is stupid expensive for some things like the power packs with USB-C...
Anyway, try a few different cables and see if it works for you, also it seems to work a tiny bit better on the Oreo Beta however my QC 2.0 car charger doesn't charge as fast as it did on 7.1.1 but luckily the car chargers are the cheapest USB-C PD items to buy, roughly about the same price as a cable.
One last note, the same charger and cable don't always go into rapid charging mode so replugging the cable in sometime kicks in rapid mode for me.
What is the best car charger?
Zargone said:
What is the best car charger?
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Click to collapse
Haven't tried it, but something like this with USB PD sounds like it would be good - https://www.amazon.co.uk/Charger-Delivery-Output-Adaptor-Samsung/dp/B01M2BLLVN/
I had my phone plugged into a regular USB jack on a car this weekend and the battery didn't charge at all
Alas, not available in the US...

Charging display clarification

Just used the Ampere app to look at charging amps. On my 3rd party wireless charger where the lock screen says "Charging rapidly" Ampere shows a charge rate of about 400mA. When wired Ampere shows about 1070 mA, but the display just says "Charging". So it appears that "Charging rapidly" is actually slower than "Charging". Posting just in case I'm not the last person to figure this out.
You kind of are the last person to figure this out. There were a bunch of articles about it last week. For whatever reason, they show "Charging rapidly" on any wireless charger, but will only charge at 5 watts unless they're on the Pixel stand. Then they'll charge at 10 watts. It has something to do with proprietary quick charging standards like QC 2.0 being required for other quick wireless chargers that are not the Pixel stand.
potatomanwrl said:
You kind of are the last person to figure this out. There were a bunch of articles about it last week. For whatever reason, they show "Charging rapidly" on any wireless charger, but will only charge at 5 watts unless they're on the Pixel stand. Then they'll charge at 10 watts. It has something to do with proprietary quick charging standards like QC 2.0 being required for other quick wireless chargers that are not the Pixel stand.
Click to expand...
Click to collapse
Ok. I was aware that 3rd party chargers were only charging slowly, but had missed the part about the display always indicating fast charging on any wireless charger, but only showing "Charging" when wired. Obviously the display discrepancy is a bug.

Power Delivery providing a lot less than 15W charging. Hovering around 4.5v/1.8A

The 7 Pro is supposed to support 5v/3A, 15W charging from a Power Delivery charger, but I'm only seeing 4.5v/1.8A, which is about 8W slow charging.
Am I reading this wrong? What's the best/highest/fastest charging you've seen from a PD charger?
Charger used: https://www.amazon.com/gp/product/B07H9WMW6N/ USB C PD Charger with GaN Tech, RAVPower Wall Charger Adapter 45W Type-C Power Delivery
Cable used: https://www.amazon.com/gp/product/B06Y25Y6WX/ Anker Powerline+
Your battery is above 50% and charging speed slows with increasing battery percentage. To determine maximum speed of USB PD for the OP7Pro you need to check at a lower charge level. Warp charge will also not charge with 30W all the way.
What battery app is that?
Even with the OP charger once you get to 50-70% changing rate slows down by at least 50%, try when the phone is at 10% and then watch it for a couple minutes, that will tell you the max for that particular charger
Sent from my GM1915 using Tapatalk
Protomize said:
What battery app is that?
Click to expand...
Click to collapse
It's the built in diagnostics. Dial *#808# in the OP Phone app.
Swipe to the second screen, "Device debugging", and there's one test for Normal Charger, and one for Fast Charger.
Harry Pothead said:
Your battery is above 50% and charging speed slows with increasing battery percentage. To determine maximum speed of USB PD for the OP7Pro you need to check at a lower charge level. Warp charge will also not charge with 30W all the way.
Click to expand...
Click to collapse
DonKilluminati23 said:
Even with the OP charger once you get to 50-70% changing rate slows down by at least 50%, try when the phone is at 10% and then watch it for a couple minutes, that will tell you the max for that particular charger
Click to expand...
Click to collapse
That's a great point, thanks! I'll try again from a lower charge state!
OnePlus has said it supports 15w PD while screen is off and 5v 1.5a while display is on.
parsa5 said:
OnePlus has said it supports 15w PD while screen is off and 5v 1.5a while display is on.
Click to expand...
Click to collapse
Link?
338lm said:
That's a great point, thanks! I'll try again from a lower charge state!
Click to expand...
Click to collapse
Basically no change when the battery was much lower :crying:
parsa5 said:
OnePlus has said it supports 15w PD while screen is off and 5v 1.5a while display is on.
Click to expand...
Click to collapse
Relatively no change between screen on vs off
338lm said:
Link?
Click to expand...
Click to collapse
Question: Do the OnePlus 7 and 7 Pro supportpower
338lm said:
Basically no change when the battery was much lower :crying:
Click to expand...
Click to collapse
I'm seeing the same thing. I tried three different USB PD chargers that I used on my Pixel XL. The highest charge current I saw was 1980mA. The battery was in the low to mid 30% range. I used the Ampere app. To check the accuracy of the app, I tried two things. 1. I used the stock Oneplus Warp charger and Ampere showed 5740mA (wow, 5.7A is kicking some butt!). 2. While using my Belkin USB-PD car charger, I noted the voltage and current coming from my bench power supply. The bench supply was outputting about 10W so an Ampere reading of about 8W of energy into the phone made sense. I used three different cables too.
All my cables are USB-C to USB-C since all my PD chargers have a USB-C port on them. I see the standard for USB 3.1 has a max rating of [email protected] which can be done over a USB-A to USB-C cable. I wonder if the only way to get 15W into the phone (besides the Oneplus chargers) is to use a USB-A to USB-C cable with a charger that has a USB-A port and can support 3A? Edit: No, more research shows there there should be no problems with C-C. The Belkin PD car charger I have doesn't specifically say it supports [email protected], but the Anker AC USB charger does list [email protected] I can't get more than about 1900mA out of it even with the battery low.
I basically support all the users that OP failed this point to include proper USB PD function. Only 7.5w to 10w is supported without any dash or warp charger. Confirmed
should be fixed with 10.0.2
Power Delivery (PD) is very complex. For example the USB PD Revision 3 specification is 657 pages. Much of the complexity involves the negotiation protocols between chargers and phones or other devices. In cases where a compatible protocol can't be negotiated between a charger and phone the page 242 of the spec says: "Shall supply the default [USB 2.0], [USB 3.2], [USB Type-C 2.0] (USB Type-C®) or [USBBC 1.2] voltage and current to VBUS when a Contract does not exist (USB Default Operation)." That's my guess why people are seeing lower charging currents than advertised by the chargers.
The OP's charger has this interesting cryptic note on their Amazon page: "Rapid charge: USB-C charger delivers 45-watts of power to charge and recharge all of your important devices at a high speed with PD 3. 0 (5V/ 3a, 9V/ 3a, 12V/ 3a, 15V/ 3a, 20V/ 2. 25a) Note: USB adapter will not be able to trigger the PD protocol
Specifications are at https://www.usb.org/document-library/usb-power-delivery

Question How to make wireless charging faster?

So, when it is about charging, this Galaxy S21+ (Exynos) can be really choosy. With a lot of chargers, it difficulty reach 1.3A. Only few of the selected chargers (my Lenovo 65Watt laptop charger, IKEA 27Watt charger) it could reach 2A charging with wired. For wireless charging, it's even worse. Currently I owned 3 wireless chargers.
1. Energizer 15Watt charger. Never even shows Fast Wireless Charging.
2. Samsung EB-U1200 Wireless Charging Power Bank. This one shows Fast Wireless charging. It could charge up to 2A for a while and then once the battery temp hits about 39C (and it hits there within 5 mins), it throttles.
3. Huawei SuperCharge 27Watt Wireless Charger (with Huawei 22.5Watt SuperCharge Charger and 5A cable), performs same as Samsung Power Bank. Reaches up to 2A, then battery heats up and throttles.
I've tried different ways, including removing the phone case while charging but result is still the same. Does any of you have similar experience? or is it just my phone? Please advise me how to make wireless charging more efficient.
I've not tried wireless charging however for wired you need a charger that supports USB C PD PPS (this is a fairly new standard) and without this you won't get anything more than about 2A.
This Ravpower charger for £16 (£13 with current voucher code) works a treat hitting 4.6A when the battery is empty reducing as the battery becomes full. You have to use USB C to USB C to achieve this.
RAVPower USB C Plug Charger, 30W 2-Port PD Fast Charger: Amazon.co.uk: Electronics
Free delivery and returns on eligible orders. Buy RAVPower USB C Plug Charger, 30W 2-Port PD Fast Charger for iPhone 12 Mini Pro Max, with 20W Power Delivery 3.0, Durable & Compact Wall Charger for MagSafe Charger, iPad Pro, Galaxy, Nintendo Switch at Amazon UK.
www.amazon.co.uk
My guess is there will be a similar standard for wireless charging that you need to adhere to.

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