Using the Shortcuts app, you can create a personal automation that alerts you when your iPhone reaches 100% battery — so you can unplug and preserve battery health.

How to set it up

1. Open the Shortcuts app and tap the Automation tab
2. Tap + to create a new Personal Automation
3. Select Battery Level as the trigger
4. Set it to Equals 100% and tap Next
5. Add an action — choose Show Notification (to get a banner alert) or Play Sound (for an audible chime)
6. Tap Next, then Done

Good to know

• You can customize the notification text to say whatever you want, like "Unplug me!"
• Consider combining this with Low Power Mode actions to automatically toggle power settings based on battery level.
• The automation runs automatically — no confirmation needed after setup.

For more details, see Apple's guide on creating personal automations in Shortcuts.