IGEL OS 10.06 IGEL OS Creator UDC 3 How-Tos Setting up UDC3 on Mobile Devices Current: Display Brightness PDF Download PDF Download page Display Brightness. Current page All pages Display Brightness In order to preserve the battery you want to reduce the display brightness.Respective Tray Icon:Tray Icon NameIconWhere to configureNotebook BATMenu path: Setup > System > Power Options > BatteryRight-click the battery symbol in the system tray.The context menu opens.Click the slider of the brightness display to reduce the Display Brightness. ×