How to Check Your iPhone Battery Cycle Count and Health (Every Model)

Two numbers describe your battery's condition: maximum capacity (how much charge it can still hold compared to new) and cycle count (how many full charges it has done). They are essential before buying a used iPhone or deciding on a battery replacement.

Maximum capacity (all iPhones)

Settings > Battery > Battery Health (or Battery Health & Charging). Above 80% is normal; below 80%, Apple considers the battery worn.

Cycle count on iPhone 15 and later

Open Settings > General > About. Scroll to Battery: you see the Cycle Count, the Manufacture Date and the First Use date. On some versions, the same information is also in Settings > Battery > Battery Health.

Cycle count on older iPhones

1. Go to Settings > Privacy & Security > Analytics & Improvements and make sure Share iPhone Analytics is on (data is generated daily).
2. Open Analytics Data and find the latest file starting with Analytics- (with today's or yesterday's date).
3. Open it, tap the share icon and copy the text into Notes, then search for last_value_CycleCount. The number after it is the cycle count.

Alternative: connect the iPhone to a Mac or PC and use a battery information tool such as coconutBattery (Mac) or 3uTools (Windows), with caution and only from official websites.

What the numbers mean

Apple designs recent iPhone batteries to keep about 80% capacity after around 1,000 cycles (500 on older models), in ideal conditions.

Before buying a used iPhone

A "like new" iPhone with hundreds of cycles is not new. Full checklist: used iPhone checklist and new or refurbished?

Slow the wear

The 80% charge limit, avoiding heat and using a quality charger make the biggest difference.

Official reference: Apple: Batteries.