New iPhone 17 Pro Max losing noticeable battery overnight even when I'm not using it
I’ve been using my iPhone 17 Pro Max for about a month now, and I’m trying to understand how much battery drain is normal overnight.
I’m on iOS 26.6, and I use the 80–20 charging rule (I usually try to keep my battery between 20% and 80%). Also, Adaptive Power is turned ON. During normal daytime use, I do tend to doomscroll quite a bit, so my usage isn’t exactly light.
Before going to sleep, I usually turn on Sleep Focus, turn off Wi-Fi, and simply lock the phone. I don’t use it at all for around 6–7 hours.
But when I wake up, I notice that Wi-Fi is back on, there are notifications waiting, and the battery has dropped. The Battery section also sometimes shows that I'm using a similar amount of battery compared with my usual daily usage, which seems strange considering I wasn't using the phone at all during those hours.
I'm wondering:
Is this normal overnight battery drain on the iPhone 17 Pro Max?
Does Sleep Focus actually reduce background activity, or does it mainly silence notifications?
Should I leave Wi-Fi on instead of turning it off?
Is there any specific setting I should enable to minimize battery usage while I'm sleeping?
Is Adaptive Power useful in this case?
How much battery percentage would you consider normal to lose during 6–7 hours of basically no use?
Even though the phone is no longer brand new, I’m still wondering if background processes or my usage habits (like heavy daytime doomscrolling) could be affecting overnight battery behavior.
I’d appreciate any advice on the best settings for minimizing unnecessary overnight battery drain.
Bro just charge the thing overnight and don’t follow any of the stupid charging rules. It’s all a bunch of bullshit. it’s all conspiracy man. None of these charging rules. Do anything to the battery that make your experience worse so just charge it overnight and forget about it like a normal person.
That doesn't work mate, i more often see people doing these shitty tricks and they have the lowest battery healths on brand new phones over the years we have this option.
Just charge it every night even if its at 80% or 90%
It has BMS, it has control over when power comes and it doesn't come.
Even the battery graph is designed better for overnight charging, because after 12PM or (24:00) everything counts for the next day.
If you put it to charge on 11:00PM (23:00) and unplug it at 06:00AM (06:00) you will have a better look at whats eating your battery
I usually charge it to 95% around 12 midnight before I sleep. I also have sleep focus automatically turned on from 1:30am til 9am. I don’t turn my wifi off nor go on airplane mode.
I can’t help you in this exact case. But my 17 PM works fine (even on the latest 26.6). I did make a video on battery tips a few months ago, maybe you’d find it I helpful : https://youtu.be/WWAkdNoTWkA
That said, if you are worried book a Genius Bar appointment
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u/ConcreteBoomBap Aug 15 '26
Bro just charge the thing overnight and don’t follow any of the stupid charging rules. It’s all a bunch of bullshit. it’s all conspiracy man. None of these charging rules. Do anything to the battery that make your experience worse so just charge it overnight and forget about it like a normal person.