1. Reduce the brightness or optimize video playback on battery;
2. Change or adjust your power plan. Open the start menu and search for "power plan", click "Choose a power plan", open to find "balanced plan" and select;
3. You can choose to enable power saving mode, or choose dynamic refresh rate mode.
NOTE: Before using DRR, you will need a laptop with a monitor that supports Variable Refresh Rate (VRR) with a refresh rate of at least 120 Hz. Also, it needs a graphics driver (WDDM 3.0) that supports it. (Available via Windows Update)