To fix this, you can try some things, like enabling the battery-saver mode, troubleshooting power issues with PowerCfg, modifying the power plans, etc. Why is Edge consuming so much battery?

Battery saver will be enabled whenever the battery ... like OneDrive, Microsoft Edge, and Teams. Not to mention apps included ...

The energy saver aims to improve battery life for laptops, but it will also help you conserve energy on desktops. The feature goes beyond the battery saver mode that Windows already had ...