Screensaver works great. Can I make a suggestion?
A new option with slider in percent, slidable from left from off to minimum and from right from 100% to maximum with the options minimum = percentage from which the screen saver should be activated and maximum = percentage from which the screen saver is automatically deactivated.
Reason: for me, the screen saver only serves to save energy so that the battery is charged faster during navigation. When the battery capacity defined as maximum is reached, the screen can stay on and turn the screen saver on again automatically only when it falls below the defined minimum capacity.