02-15-2018 10:23 PM
32 12
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  1. van_basten's Avatar
    I have a Pixel 2 (non-XL) and have been using the stock wall charger. Charging from 20% to full takes about 1hr 30min to 1hr 35min. It's a bit slow but still reasonable. Lately I try charging it with a 3rd party 2.4A/12W A-to-C charger I got from Amazon, and the charging speed is the same despite only showing "charging" without "rapid". I supposed the stock 3A/18W C-to-C charger should charge faster then a 2.4A/12W A-to-C? It seems that we all want to do "rapid charge" but what's the point if "rapid charge" is not actually faster?

    The 3rd party charger I have is a iClever dual port A-to-C. Each port produces 2.4A/12W.
    01-31-2018 07:12 PM
  2. BattleSwine's Avatar
    I know the stock charger 2A at 9V for the 18W. My Pixel 2 XL is functional capped at 10.5W for charging per Nathan K

    https://www.xda-developers.com/googl...onally-capped/
    01-31-2018 07:31 PM
  3. Mooncatt's Avatar
    I know the stock charger 2A at 9V for the 18W. My Pixel 2 XL is functional capped at 10.5W for charging per Nathan K

    https://www.xda-developers.com/googl...onally-capped/
    From the article:

    "He suggests that the reason for the slow charging speed on the Pixel 2 XL is that Google and LG are trying to avoid putting strain on the battery in order to maximize its longevity."

    I'd believe it. LG has been very aggressive with throttling charging on their own phones, and I'm sure they do it on their Google ones as well. Simply turning the screen on my V20 kills the charging rate even if the phone is cool.

    Also, them referring to wattage add "current" instead of power is driving me bonkers.
    BattleSwine likes this.
    01-31-2018 07:52 PM
  4. BattleSwine's Avatar
    I hope to keep Pixel 2 XL longer than I was able to keep my Nexus 6P.... it's battery was stressed by over-volting (settings beyond my control) and overcharging (my fault)..... Now my max charge target is 80%. By the time I made the change most of the damage was already done to my 6P...
    02-03-2018 03:21 PM
  5. Ry's Avatar
    I have a Pixel 2 (non-XL) and have been using the stock wall charger. Charging from 20% to full takes about 1hr 30min to 1hr 35min. It's a bit slow but still reasonable. Lately I try charging it with a 3rd party 2.4A/12W A-to-C charger I got from Amazon, and the charging speed is the same despite only showing "charging" without "rapid". I supposed the stock 3A/18W C-to-C charger should charge faster then a 2.4A/12W A-to-C? It seems that we all want to do "rapid charge" but what's the point if "rapid charge" is not actually faster?

    The 3rd party charger I have is a iClever dual port A-to-C. Each port produces 2.4A/12W.
    How long does it take to get from 20 to 50 or 20 to 80?
    02-03-2018 03:23 PM
  6. Mooncatt's Avatar
    I hope to keep Pixel 2 XL longer than I was able to keep my Nexus 6P.... it's battery was stressed by over-volting (settings beyond my control) and overcharging (my fault)..... Now my max charge target is 80%. By the time I made the change most of the damage was already done to my 6P...
    How did it get over voltage charging? Was it a defective charger or something?
    02-03-2018 04:17 PM
  7. PowrDroid's Avatar
    How long does it take to get from 20 to 50 or 20 to 80?
    I've been keeping a log in Keep of battery charging times for partial charges. I don't let my battery get down to see 20%. However, I've seen my 2 XL battery charge from 33% to 73% in 31 minutes. From 39% to 91% in 38 minutes. I think that's pretty good.

    Here's my raw data. This is using the stock charger with a 6.6 ft. cable (I don't think the length of the cable is a factor)

    12/30
    8:14 38%
    8:50 48%
    9:23 86%
    10:02 98%
    10:06 99%

    1/13
    8:03 47%
    8:41 92%
    9:13 94%
    9:26 97%

    1/14
    6:58 62%
    7:29 80%
    7:47 90%

    1/16
    9:19 63%
    9:52. 87%
    10:11. 94%

    1/17
    8:50 35%
    9:22. 76%
    9:33 91%

    1/18
    9:00 55%
    9:38 88%

    1/?
    3:58 33%
    4:29 73%

    1/26
    8:48 58%
    9:34 91%

    1/30
    39% 8:32
    91% 9:10

    1/31
    29% 9:21
    75% 9:59
    79% 10:05
    Switch to USB charger on PC
    77% 10:27
    90% 11:36


    Edited to add: Don't know why there are extra line spaces in my copy-paste job when I post the data. Don't see them until I hit send. Oh well.
    02-03-2018 04:28 PM
  8. GSDer's Avatar
    Don't know why there are extra line spaces in my copy-paste job when I post the data. Don't see them until I hit send.
    Are you using the Tapatalk app? They did something in the last couple of months that caused this.
    02-04-2018 11:21 AM
  9. PowrDroid's Avatar
    Are you using the Tapatalk app? They did something in the last couple of months that caused this.
    Yes, I am. I've also noticed the ability to post images using Tapatalk is basically gone. And frequently when copying-and-pasting links to other posts on the same forum you get random results. That is, you might post a link to a thread about battery life and instead your link goes to a totally different post about fingerprint sensors.
    02-04-2018 02:33 PM
  10. Mooncatt's Avatar
    And frequently when copying-and-pasting links to other posts on the same forum you get random results. That is, you might post a link to a thread about battery life and instead your link goes to a totally different post about fingerprint sensors.
    It doesn't even have to be a link from the same site. At least on the AC Forums app (which is based on Tapatalk), it's not uncommon to link to something like Amazon, only to have the app/site change it to look like some sort of AC redirect link that basically just refreshes the thread I'm in.
    02-04-2018 02:37 PM
  11. cbreze's Avatar
    I prefer a slower charge as it is easier on batteries of all types. I generally charge before going to bed and it usually takes about 90 min.
    02-04-2018 02:48 PM
  12. BattleSwine's Avatar
    How did it get over voltage charging? Was it a defective charger or something?
    Nothing wrong with charger battery was always set to hit 4.4V.... most Lithium batteries it's 3.7V to 4.2V.... seams like a small difference but it shortens lifespan by over stressing
    02-05-2018 03:40 PM
  13. Mooncatt's Avatar
    Nothing wrong with charger battery was always set to hit 4.4V.... most Lithium batteries it's 3.7V to 4.2V.... seams like a small difference but it shortens lifespan by over stressing
    A lot of modern cellphone Li-ion/Lipo batteries have a graphite additive in them that does safely let them charge at a little higher voltage. 3.85V resting and 4.4V when charging. So I wouldn't work about that.
    Laura Knotek likes this.
    02-05-2018 04:02 PM
  14. mustang7757's Avatar
    I'm having same issue , says rapid charging then next to it 4 hours to charge and it's at 45% right now ...tried different chargers which was also fast chargers same thing
    02-08-2018 10:00 AM
  15. jrodjrxbox's Avatar
    I'm having same issue , says rapid charging then next to it 4 hours to charge and it's at 45% right now ...tried different chargers which was also fast chargers same thing
    Mines even worse says rapid charging and going to take 11 hrs
    Attached Thumbnails rapid charge not charging faster?-screenshot_20180208-101052.jpg  
    mustang7757 likes this.
    02-08-2018 10:17 AM
  16. mustang7757's Avatar
    Mines even worse says rapid charging and going to take 11 hrs
    I was Google support and they told me to monitor it until fully charged in safemode
    02-08-2018 10:42 AM
  17. jrodjrxbox's Avatar
    I was Google support and they told me to monitor it until fully charged in safemode
    I ended up restarting my phone 4 times and unplugging my charger discharging it and now its working
    02-08-2018 11:27 AM
  18. van_basten's Avatar
    How long does it take to get from 20 to 50 or 20 to 80?
    Pretty much the same using stock (rapid) and 3rd party (non-rapid) charger. Again, I have a 5" Pixel 2.

    20% to 50% - 25 to 30 minutes
    20% to 80% - 55 to 60 minutes
    20% to 100% - 90 to 95 minutes
    02-09-2018 12:34 AM
  19. Ry's Avatar
    Pretty much the same using stock (rapid) and 3rd party (non-rapid) charger. Again, I have a 5" Pixel 2.

    20% to 50% - 25 to 30 minutes
    20% to 80% - 55 to 60 minutes
    20% to 100% - 90 to 95 minutes
    to 80% doesn't seem too bad.

    And that's really the goal of fast charging. It will slow down as percentage increases.
    02-09-2018 01:55 PM
  20. van_basten's Avatar
    to 80% doesn't seem too bad.

    And that's really the goal of fast charging. It will slow down as percentage increases.

    Well I do think that the charging performance on my Pixel 2 is reasonable. I just think that this rapid charge technology with the stock charger (3A/18W USB-C PD) is very misleading. When we get additional chargers for our new phones, we all try to find the best charger that can do rapid/fast charge. But in reality, for Pixel 2, a 2.4A USB-A charger that I bought 3 years ago produce the same charging performance.
    02-09-2018 02:17 PM
  21. worldsoutro's Avatar
    Charging is way too slow on this phone and I'm not sure there is actual evidence that fast charging stresses battery life. if I forget to throw my phone on the charger the night before or I fall asleep, forget about having a full charge for the day
    02-09-2018 04:24 PM
  22. Almeuit's Avatar
    Charging is way too slow on this phone and I'm not sure there is actual evidence that fast charging stresses battery life. if I forget to throw my phone on the charger the night before or I fall asleep, forget about having a full charge for the day
    I have no issues charging with my Pixel 1 brick or the brick that came w/ the Pixel 2.

    In my truck it isn't rapid but it charges pretty decent.
    02-09-2018 04:41 PM
  23. LeoRex's Avatar
    Keep in mind that Google configured the charging profile to be very conservative... The 6P soured them to squeezing the most charge out of a cell while also charging it as fast as they could.

    Frankly, I am fine with that.... the 2XL gets stellar battery performance, so I don't get worried leaving the house at something other than a full charge. And if setting things up they way they did extended the life of the cell, I'll deal with waiting a bit longer for a charge.
    02-11-2018 10:26 PM
  24. worldsoutro's Avatar
    Keep in mind that Google configured the charging profile to be very conservative... The 6P soured them to squeezing the most charge out of a cell while also charging it as fast as they could.

    Frankly, I am fine with that.... the 2XL gets stellar battery performance, so I don't get worried leaving the house at something other than a full charge. And if setting things up they way they did extended the life of the cell, I'll deal with waiting a bit longer for a charge.
    I have used a lot devices with fast charging like OnePlus and never experienced the battery issue like I had with the 6p. Maybe it was the battery Huawei used?

    I hope gone goes back to fast charging for the pixel 3. Just annoying if I need a quick recharge and the pixel 2 isn't good for that. It's why the OnePlus 5t is my daily driver
    02-11-2018 11:22 PM
  25. LeoRex's Avatar
    I have used a lot devices with fast charging like OnePlus and never experienced the battery issue like I had with the 6p. Maybe it was the battery Huawei used?
    It was just very aggressive... the peak charge voltage was at the absolute upper limit for LiPo cells and they used an equally aggressive charging profile to charge it quickly. So just the act of charging the phone to 100% put the cell under a significant amount of stress, more so that most phones.

    Frankly, as someone who plans on keeping the phone for an extended period, I'm more than happy to sacrifice charging speed for longevity. I had to swap out the batter on my 6P at about 15 months as it was down to about 85% capacity (even with my somewhat conservative charging practices).

    Unless there is a big shift in battery technology, I wouldn't expect to see faster charging phones from Google. They clearly have made battery longevity a priority (it was one of the marketing points when the Pixel 2 launched). It remains to be seen if this pays dividends in real world usage, but on paper, less charging stress should mean longer cell life.
    02-12-2018 12:34 AM
32 12

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