How To Set The iPhone Charge Limit (And Why It Stops At 80%)

Guide 4c · Battery & Charging

Phone stuck at 80% on the charger? It's probably doing that on purpose. Here is how the Charge Limit works and how to change it.

Works on: Charge Limit is on iPhone 15 and newer. iPhone 14 and older have Optimized Battery Charging only. That part is covered below.

How To Change The Charge Limit

1. Open Settings.
2. Tap Battery.
3. Tap Charging.
4. Pick a limit from 80% to 100%. The choices go up in steps of 5%.

What You'll Notice

• The phone stops a little short of the limit. That's normal.
• If the level drops more than 5% while plugged in, it starts charging again.
• Now and then it charges to 100% on purpose. This keeps the battery reading accurate.
• At 100%, you can also turn on Optimized Battery Charging.

iPhone 14 And Older

1. Open Settings and tap Battery.
2. Tap Battery Health & Charging. (On iOS 15 and older it is just called Battery Health.)
3. Turn Optimized Battery Charging on or off.

With this on, the phone may pause at 80% overnight and finish before you usually unplug. A note on the Lock Screen shows when it will be full. Touch and hold it, then tap Charge Now if you need it sooner.

Still not charging past a low level with these off? The port or battery may need a look. See our battery health guide.

Source: About Charge Limit and Optimized Battery Charging on iPhone (Apple Support, checked Oct 18, 2026).

Franchitti's Fix LLC is an independent repair shop, not affiliated with Apple.