Why is my iPhone 13's battery health at 85% within 1.5 years?

It is normal for the battery to decline an average of about 1% a month.

Your phone is 18 months old, so it would be normal to expect that the battery was at about 82% at this time.

If your battery is at 85%, you should be very happy.

Replace the battery when it is down to 80%.

That is not very bad, but rather very good. 1.5 years is 18 months. Your iPhone is expected to drop about 1% battery health a month, so under an average decline you should be at 100 - 18 = 82% battery health. But rather you are above at 85%. Your iPhone’s battery is outperforming the average manufacturers decline.

What are your Charge Cycles? You can expect a 1% drop for every 25 cycles. The battery is designed to last 500 charge cycles before it reaches 80% under ideal conditions. You may very well be right on target, and probably better than average.

iPhone battery and performance - Apple Support

Mac Jim ID wrote:

What are your Charge Cycles? You can expect a 1% drop for every 25 cycles. The battery is designed to last 500 charge cycles before it reaches 80% under ideal conditions. You may very well be right on target, and probably better than average.

iPhone battery and performance - Apple Support

Hey Mac Jim ID, just wondering does the iPhone 13 have a charge cycle count? I thought it was only for the iPhone 15 and newer.

Going to be difficult to find Charge Cycles on an iPhone 13 unless 3rd party software is installed.

1% drop for every 25 cycles is pretty close to the other general guideline of about a 1% drop a month.

Bob Timmons wrote:

Going to be difficult to find Charge Cycles on an iPhone 13 unless 3rd party software is installed.

1% drop for every 25 cycles is pretty close to the other general guideline of about a 1% drop a month.

That’s what I figured. I remembered you had to go all the way through the analytics data and search for it. Plus third-party software may not be the most accurate.

Yes, you are absolutely correct!

I would never direct a user to analytics, even for something simple.

One of the first things they would see is the model number of their iPhone is not the model number that they thought they had.