Iphone 13 from 100% battery health down to 52% after 3.5 years

First of all, Apple recommends that you replace the battery when the Battery Health dips below 80%. If your battery is now at 52%, it is amazing that the iPhone will power up at all.

Make an appointment at the Apple Store / Genius Bar or take the phone to an Authorized Apple Service Provider (AASP) to have them replace the battery. About $100 (U.S.)

You can find a list of authorized shops for this service by tapping on the link just below:

Find Locations

As far as "normal", there really is no normal. A light user might get 5 years of use from the battery before it has declined to 80%. A heavy user might be lucky to get 2 years of use on the battery before it has declined to 80%.

The important thing is to replace the battery once it has dipped below 80%.

Kevin_Nguyen83 wrote:

My Iphone 13 from 100% battery health come down to 52% after 3.5 years. Is that normal? Now my iphone can shut itself down immediately when I just want to see what time it is.

Sure, it could be completely normal. Apple suggests an iPhone 13 battery will dip to 80% after about 500 charge cycles. You're been charging your iPhone routinely for 3.5 years, so it's possible you've been through at least 1000 charge cycles by now. The battery should have been replaced when battery health dipped to 80%. At 52%, you are taking a HUGE risk that the battery could swell or worse go up in flames, completely destroying the phone.

Either schedule an appointment immediately to have the battery replaced or trade your phone for a new iPhone. But DO NOT DELAY.

Apple Service and Repair for iPhone Battery - Apple Support

Replace your battery.