How to Stop Battery Charging at 80% on RHEL/Rocky Linux
Keeping your laptop battery charged at 100% all the time can slowly reduce its lifespan. If you use Rocky Linux and want to stop charging at 80% (a commonly recommended limit), this guide walks you through everything step by step in a beginner-friendly way. Why Limit Battery Charging to 80%? Modern laptops use lithium-ion batteries , which age faster when: They are kept at 100% charge for long periods The laptop stays plugged in all day By limiting charging to around 80% , you can: Reduce battery wear Extend battery lifespan Keep the battery healthier over the long term This is especially useful for office users and people who mostly work while plugged in. Step 1: Check If Your Laptop Supports Charge Limiting Battery charge limiting depends on hardware support . Many business-class laptops support it, but not all. Run the following command: ls /sys/class/power_supply/BAT0/ If you see files like: charge_control_end_threshold charge_control_start_threshold ✅ Your laptop support...