iPhone X Charging on 12w usb power adapter

Discussion in 'iPhone' started by Aljon, Aug 6, 2019.

  1. Aljon, Aug 6, 2019
    Last edited: Aug 7, 2019

    Aljon macrumors newbie

    Aljon

    Joined:
    Aug 1, 2019
    #1
    Hi, i just bought and first time to use a 12w USB power adapter on my iPhone X, My question is, My iPhone X is getting (hot) i mean WARM on 12w USB power adapter is that a normal? i started charging around 20%, but when i use my 5w that includes on the box its not that hot

    -Thank you i hope you can answer my question Good day!

    Edit: But when reaches around 60-70% the phone is getting cool again.
     
  2. I7guy macrumors Core

    I7guy

    Joined:
    Nov 30, 2013
    Location:
    Gotta be in it to win it
    #2
    My phones (max, xr)get slightly warm...IMO, HOT is not normal.
     
  3. Azathoth123 macrumors 6502

    Joined:
    Sep 13, 2018
    Location:
    Fountain City
    #3
    Is it an Apple charger?

    Is it in a case?

    I used an Apple 12w charger for years, IP6, X, and XS with no problems.
     
  4. now i see it macrumors 68040

    Joined:
    Jan 2, 2002
    #4
    The 12 watt charger will heat up the battery more than the 5watt charger. I use both and the 12 watt charger definitely heats up the phone more. More current going in = more heat. No way to avoid it.
    On hot days at home I place a small frozen blue ice block in a sock and set the iPhone on it. Keeps the temperature down but not too cold
     
  5. internetrando macrumors 6502

    internetrando

    Joined:
    Jun 5, 2018
    Location:
    Texas
    #5
    More power = More heat.

    I assume that you're using the phone while you're charging it. This creates additional heat. You will feel it in your hands if you don't have a case on. Best practice for battery longevity is to keep heat down. If you're going to fast charge the device (and yes, I do know that the 12W is NOT a true fast charger), limit phone use.

    Regardless, batteries are expendable objects and using them while you charge them probably won't affect their life over the long run in any appreciable way. Just use the phone and enjoy it. The iPhone has built in protection and safety measures that will keep it within an acceptable operating temperature (which could include a temporary shutdown depending on circumstances).
     
  6. Newtons Apple macrumors Core

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
  7. Aljon thread starter macrumors newbie

    Aljon

    Joined:
    Aug 1, 2019
    #7
    my bad not hot as hot just warm.
    Yes its Apple Charger, i removed the case everytime i charge, its not hot its just warm my bad.
    I see, so its normal my bad on saying the word "HOT" its just warm unlike the 5w its cool.
    Im not using it while charging, sorry for the word of "HOT" its just warm unlike the 5w before its cool. BUT When reaches around 70-80% my phone is not getting warm anymore.
    Sorry i must say warm
     
  8. Cmd-Z macrumors 6502

    Cmd-Z

    Joined:
    Nov 14, 2014
    Location:
    Coyote, CA
    #8
    Which is why the charge current starts to get throttled as free capacity lessens, this is by design within the iPhone itself and not the power adapter.
     
  9. Newtons Apple macrumors Core

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
    #9
    Yes we should “free capacity” as it should not be constrained!

    Long live capacity!
     

Share This Page

8 August 6, 2019