Battery

Explains how to arrange a battery repair or replacement, the estimated out-of-warranty fees and when AppleCare may cover it.

Explains how temperature and charging habits affect battery lifespan and notes that charging overnight is fine because the iPhone stops at full.

Ways to find what is using battery and save power, including checking daily usage, using Wi-Fi, Low Power Mode or Adaptive Power, and checking battery health.

States the operating temperature range and explains what happens when a device overheats, including what to do if a temperature warning appears.

Troubleshooting for slow or failed charging, including why it may pause at 80 percent and what to do about accessory warnings.

Explains how batteries lose capacity as they age and how iOS may manage performance. Shows where to see Battery Health.

Describes Low Power Mode, which reduces background activity such as automatic downloads and Background App Refresh, and turns off after reaching 80 percent charge.

Explains Apple's stance on genuine batteries and where Settings shows whether a battery is genuine, used or unknown.

Explains what affects charging speed and recommends faster USB-C or MagSafe chargers plus a few habits that avoid slowdowns.