My iPhone 14 Pro Max has shown a significant decline in battery health since the latest update 18.0.1. Before I had no issues with ending my day about 8 o’clock in the evening with 50 to 60% battery life left. With no changes in its usage I’m down to 20 or 30%. Anyone else noticed this since the update?
iPhone 14 Pro Max, iOS 18
On average, Battery Health will decline about 1% for every 25 charge cycles, or in normal use about 1% per month. So having it down to 86% after 30 months is normal and actually better than average. The operating system running in your iPhone will not affect the Battery Health other than perhaps to recalibrate it. Battery Health is not a linear process; it can be steady for a while and then take a drop, or in some cases even increase, as the algorhythms do their best to provide an estimate.
As to the battery usage during the day, perhaps something here will help a bit:
If the battery in your iPhone drains too quickly - Apple Support
Regards.
Go to Settings/Battery/Battery Health…What is the maximum capacity? And how long has it been since the phone was new?
86%. 2.5 years old. I’m closer to upgrading to the new 16. Just found it odd that it was all of a sudden such a drastic change after the update.
At 86% it has about 14% less capacity than it did new, which means it will end the day at a 14% lower value.
iPhone 14 Pro Max Battery Health
