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iPhone 15 Pro Max iPhone 15 80% limit - difference between two battery graphs?

B

Bluetrain225

macrumors newbie
Original poster
Sep 13, 2017
5
1
IMG_0173.pngIMG_0172.png
Can anyone explain the difference between the battery graphs attached? Mine charges like the one at top with the lightning bolt staying constant throughout while plugged in. The bottom photo shows the phone reach 80 and then the bar goes blank and seems to indicate it is plugged in but not charging. What’s the reason for the difference between the two if both are set to 80% limit?
 
Fantasigraphic said:
I wonder if it’s because one is plugged in via USB-C cable and the other is wireless charging???
Click to expand...
My wife also has the phone and hers shows like the bottom graph. She charges via usb-c cable. I noticed she has clean energy charging on. Only difference between our charging methods.
 
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Fantasigraphic said:
I wonder if it’s because one is plugged in via USB-C cable and the other is wireless charging???
Click to expand...
My wife also has the phone and hers shows like the bottom graph. She charges via usb-c cable. I noticed she has clean energy charging on. Only difference between our charging
 
Not sure if this is a clue, but I just had my first graph that looked like the first one in the original post. I keep my 15 Pro Max on 80% charge, and it has always looked like the second graph--a short charge period followed by "coasting." Two nights ago it went to 100%, which is expected once in a while, but the charging graph looked like the first graph in the original post--almost a full night of charge at 100%. Last night it was back to "normal," charging to 80% and coasting . . .
 
IMG_B7547A7C1875-1.jpeg


This is 15Pro on a cable.



Screenshot 2023-11-19 at 10.48.53.jpeg


This is 15 Pro Max on MagSafe... looks weird, the initial drop and then it's kinda losing power during the night.
 
537635 said:
View attachment 2315006

This is 15Pro on a cable.



View attachment 2315007

This is 15 Pro Max on MagSafe... looks weird, the initial drop and then it's kinda losing power during the night.
Click to expand...
I think its explained in my link above.

"

About 80% Limit with iPhone 15 models​


With iPhone 15 models, you can choose between Optimized Battery Charging, 80% Limit, and None.
When you choose 80% Limit, your iPhone will charge up to about 80 percent and then stop charging. If the battery charge level gets down to 75 percent, charging will resume until your battery charge level reaches about 80 percent again.
With 80% Limit enabled, your iPhone will occasionally charge to 100 percent to maintain accurate battery state-of-charge estimates.
."
 
It doesn't explain this. Both phones are set to 80% limit, yet the charging curve is different. Also look at the graphs in the first post, there appear to be several options how the battery is charged.
 
That's interesting. I think we should ask Apple about the difference or post this on apple community
 
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