Expected battery life for iPhone 15 Pro

Etymon wrote:

What level of battery life should I get from my iPhone 15pro

[Re-Titled by Moderator]

Original Title: Mr

That depends on much you use your phone and how often you charge it. Generally speaking, batteries - ALL BATTERIES, lose some health with each full cycle charge. On average, for up to every 50 charge cycles, you will see about a 1% drop in battery health. Battery health decline is not linear. It can remain steady for a while, then drop a few points all at once. If 50 charge cycles is the average, it will take about 1000 charge cycles to reduce the health of your battery to 80%. Once your battery dips to 80% it will then be time to pay Apple to replace the battery in your iPhone.

This may help you --> Batteries - Maximizing Performance - Apple

Read this too --> When to charge your iPhone or iPad - Apple Community

Another data point:

My compact Phone SE 2020's battery has just over half the initial capacity of an iPhone 15 Pro (1821 maH v. your 3274 maH), and went into service new on 1 Nov 2021.

Today it has 85% health at 496 cycles. As far as health goes, the rate of change has slowed dramatically, having been in the 85-86 range for quite a long time. I still have all the runtime I need between charges.

I use the Optimized Battery Charging option and charge the phone only at night except in extenuating circumstances, which have been few.

Etymon wrote:

What level of battery life should I get from my iPhone 15pro

One person's data point. My iPhone 15 Pro, purchased on its launch date currently has a battery health of 87%, 790 cycles. Based on the way previous phones have worked, the battery should probably last me another year. I haven't decided yet if I'm going to replace the battery next spring and wait until 2026 to buy a new phone or if I will update in the fall. My last phone prior to this was an 11 Pro. I had its battery replaced once.

I have optimized battery charging enabled. Beyond that, I don't worry about it. In fact, this is the first time I've checked my battery health in probably a year.