/pixelphone/community?hl=en
/pixelphone/community?hl=en
10/25/17
Original Poster
Jef z

First USB-C PD phone: Is the pixel 2 xl suppose to charge this slow with the official cable/charger?





So low 1000mA range for screen on, 2300ish for screen off. Meanwhile my oneplus 5 was doing about 2700mA screen on with it's proprietary dash charger...

Is this comparable behavior to other pixels/nexus? Screen off is fine, but screen on is really underwhelming. I was breaking even when playing a game when plugged in (no % gained when gaming for 10min). 

Easily the biggest annoyance i've had with this phone lol. Probably the slowest charging device I've owned since I had an iphone, and I know the last few % is slow, even everything before takes a while, especially if you want to use the phone while charging. 



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kechein
10/25/17
kechein
Some errta in your post:

1: First USB-C PD phone
The pixel 2s are not the first USB Power Delivery capable phones from Google(Pixel 2016 family already support USB-PD).

2: USB Power Delivery ensures fast(er) charging?
A phone with USB PD support does not necessarily ensure it charges more quicky.
For example:
a:Both a conventional type-C charger(5V 3A) and a PD charger(at least 9V2A option available) fully charges Pixel 1, and Pixel 2 almost in the same time.
b:A 5V 1A charger charges much slower than a PD charger(5V3A/9V2A available) for these phones
The conventional here means no PD support, however 5V 3A mode is an option specified for the type-C connector


"So low 1000mA range for screen on, 2300ish for screen off. Meanwhile my oneplus 5 was doing about 2700mA screen on with it's proprietary dash charger..."

1A with screen on:
This is by heat dissapation throtting

2.3A with screen off:
See Nathan.K's charging review on Pixel 2016 family

oneplus 5 2.7A with screen on with it's proprietary charger:
The voltage converting is done by the charger, and the heat dissapation of this part is moved to the charger too, so the heat management can make more room for current.
You might see similar designs in future(probaby next year) devices with USB PD 3.0 + PPS capability.


"Probably the slowest charging device I've owned since I had an iphone"
It is probably not:

Pixel 2 XL does have longer minium charging time than Pixel XL 2016 variant.

The Nexus 6p charges as slow as the pixel 2XL using both of their fastest possible charging procedure.(Nexus6p need an addtional 0.5 hour of charging after the indicator shows 100%, see Anandtech/Nathan.K's review)

If you get iPhone 8/8XL/X, and charges them with a suitable USB PD charger, you will also find similar charging time as pixel 2XL.
Note these iphones support USB PD too, though they do not have a USB type-C jack.
sfawcett15803
11/2/17
sfawcett15803



"The Nexus 6p charges as slow as the pixel 2XL using both of their fastest possible charging procedure"

 That is not true, at least not for me.  My Nexus 6p would charge in a little over an hour.  My pixel 2 xl is taking around 2.5 hours.
kechein
11/3/17
kechein
“ That is not true, at least not for me.  My Nexus 6p would charge in a little over an hour.  My pixel 2 xl is taking around 2.5 hours.”

This is not true when both devices are new, please refer to Anandtech and Nathan.K's review on nexus 6p's charging.
Your situation seems to be caused by battery aging of Nexus 6p.

A hint of the aging:
"On top of the slow charging problem, I've also noticed that the charge percentage tends to drop a few percent really quickly after I unplug the phone.  Is that happening to anyone else?  (It does not happen if I charge it to 100%)"

It will take pretty long time to drop from 100% to 99% for Nexus 6p(with a not aged battery), because it keeps on charging for about 30 minutes(this is why it takes 2.5 hours to charge nexus 6p) after the indicator shows 100%.
sfawcett15803
11/3/17
sfawcett15803
You're mixing my phones up... The problem I was describing was on the pixel, not the Nexus. I will admit my Nexus battery definitely aged, but it had always charged in an hour. The brand new pixel is taking 2.5 hours to charge and dropping quickly when I unplug it before it reaches 100%.
 
It's not a huge issue since the pixel's battery life is great, but something is clearly wrong.
Steve Koch
11/6/17
Steve Koch
@Jef z

I opened a support request with Google and they confirmed that this is not the intended behavior and have sent me a replacement device. There is a lot of misinformation going around, so I would recommend contacting support directly regarding the slow charge issue. 
 
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