How to check your iPhone's battery health and cycle count

Apple’s Settings app lets you view battery health and, on iPhone 15 and newer, the exact cycle count; older models require third-party tools like coconutBattery. A maximum capacity above 80% indicates a healthy battery, while Apple rates iPhone 15+ for up to 1,000 full charge cycles (≈2–3 years) and earlier models for up to 500 cycles. Enabling Optimized Battery Charging or a maximum-charge limit helps preserve longevity.