How do I check the battery health on my iPhone?

To check the battery health on your iPhone, follow these steps:

1. Open the Settings app on your iPhone.
2. Tap on Battery.
3. Tap on Battery Health.
4. You will see two important metrics: Maximum Capacity and Peak Performance Capability. Maximum Capacity is the measure of your battery's capacity relative to when it was new. Peak Performance Capability tells you whether your iPhone is capable of supporting peak performance.

If the Maximum Capacity is less than 80%, it's recommended that you replace your battery. If your Peak Performance Capability is showing as Significantly degraded, your iPhone may unexpectedly shut down to protect its components.

Note that these steps are for iPhones running iOS 11.3 or later. If you have an older version of iOS, you may need to take different steps to check your battery health.

To check the battery health on your iPhone, follow these steps:

1. Go to Settings.
2. Tap Battery.
3. Tap Battery Health.

Your iPhone will display information about your battery's capacity, peak performance, and whether your battery needs to be serviced.

• Maximum Capacity: This is the percentage of your battery's original capacity that it can still hold. As your battery ages, its maximum capacity will decrease.
• Peak Performance Capability: This indicates whether your iPhone's battery is able to maintain peak performance. If your battery is not able to maintain peak performance, you may experience unexpected shutdowns.
• Service Battery: If your battery needs to be serviced, you will see a message that says "Service Battery" under Battery Health. You can then take your iPhone to an Apple Store or an authorized Apple service provider to have your battery replaced.

Here are some tips to help you improve your iPhone's battery health:

• Avoid extreme temperatures. Exposing your iPhone to extreme temperatures can damage the battery.
• Avoid charging your iPhone to 100%. Charging your iPhone to 100% can shorten the battery's lifespan.
• Avoid draining your iPhone's battery to 0%. Draining your iPhone's battery to 0% can also shorten the battery's lifespan.
• Use the Low Power Mode. The Low Power Mode can help you extend your battery life.
• Close unused apps. Apps that are running in the background can drain your battery.
• Turn off Wi-Fi and Bluetooth when you're not using them. Wi-Fi and Bluetooth can drain your battery.
• Dim the display. Dimming the display can help you extend your battery life.
• Use a battery case. A battery case can help you extend your battery life.