iphone 16 pro max drain battery when powered off

I have a 16 pro max, the battery health is 100% and it has 144 cycle count, the battery is mostly good but the problem is that when the battery drops to about 20-30% and then I leave the phone off for about 3-5 minutes, the battery drops 2-3% (this only happens when the phone is below 30%)

iPhone 16 Pro Max

Posted on Sep 12, 2025 2:35 PM

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3 replies

Sep 12, 2025 2:50 PM in response to hajdutii23

I’ve never bothered to check that “feature”; I just use the phone and charge it when it goes below 20% (which is almost never). But I suspect the battery gauge is less reliable when the battery is nearly depleted. I see little point in attempting to micromanage the battery I just use and enjoy the phone and pretty much ignore the battery gauge until it warns me that it is below 20%.

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iphone 16 pro max drain battery when powered off

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