It isn't better just to type this?
1. Exit Logitech Gaming Software
2. Navigate to C:\Program Files\Logitech Gaming Software\Resources\G930\Manifest
3. Copy this file to your desktop
4. Open the file with NotePad
5. Search for battery turnOffInterval="960" and set this to a longer period of time.
6. Save the file
7. Copy it back to the original folder
8. Load the Logitech Gaming Software again -- and you are now all set!