How to Turn On / Off Xiaomi's 80% Charging Limit (Optimized Charging)
Xiaomi's Battery Protection feature limits charging to 80% to reduce long-term battery degradation. Here's how to enable, disable, or schedule it.
How to Enable 80% Charging Limit
On HyperOS:
1. Settings → Battery → Battery protection → toggle on.
2. The phone will stop charging at 80% and display "Battery protection mode".
On MIUI 13/14:
1. Settings → Battery → Optimized charging → toggle on.
When enabled, charging automatically resumes to 100% when you disable it or if the phone detects low battery for a while.
How to Disable the Charging Limit
To charge to 100% (e.g., before a long trip):
1. Settings → Battery → Battery protection → toggle off.
2. Or: pull down quick settings panel → long-press battery tile → disable.
Charging Mode Options (HyperOS)
| Mode | Behavior | Best For |
|---|---|---|
| Battery protection | Charges to 80%, holds | Overnight / desk charging |
| Balanced charging | Charges to 100%, learns schedule | Mixed use |
| No restriction | Charges to 100% always | Travel / power users |
Switch between modes: Settings → Battery → Charging settings → Charging mode.
Why Limit to 80% Extends Battery Life
Lithium-ion batteries degrade faster at high charge levels:
- Charging to 100% daily reduces capacity to ~80% health in 12–18 months.
- Charging to 80% daily can maintain ~90% health after 2 years.
- The difference is most significant for users who charge overnight.
Scheduled Charging (Smart Charging)
HyperOS can learn your charging schedule:
1. Settings → Battery → Optimized charging → Scheduled charging.
2. Set your usual wake-up time — the phone charges to 80% quickly, then completes the final 20% just before your alarm.
Pro Tips
- If you use the phone heavily during the day and need full battery, disable the limit in the morning and re-enable at night.
- Xiaomi 15 series adds a battery health percentage display — check it at Settings → Battery → Battery health.
- The 80% limit is recommended for users who charge their phone every night and don't need 100% every morning.
