No, power-saving mode settings are fixed, and you cannot customize them. However, you can use optimized settings to reduce battery consumption and prolong battery life on your iPhone.
Enabling power-saving mode on your iPhone is a simple way to conserve your battery life and extend the usage time of your device. You can use the built-in settings, Siri, or Shortcuts app to enable power-saving mode on your iPhone. However, it's essential to understand that power-saving mode comes with some limitations and reduced functionality. To make the most out of your iPhone's battery life, you should charge it regularly and use optimized settings.