I think there are no battery saver application for Android phones from Norton. It would be of great help if Norton can launch one battery saver application for Android phone users like us. Trend micro had one battery saver application but it’s not available now on google playstore. It was one of the best battery saver application. Kaspersky battery saver is not good & any saver below Kaspersky is far worse for usage! So if one battery saver application is available from Norton, then our problems get solved, as we need not have to worry about low battery level of our phones.
David, as that feature hasn't been a topic on any of the forums threads that I know of, this may help: https://www.howtogeek.com/242472/how-to-use-and-configure-androids-battery-saver-mode/
Cheers