After unplugged the adapter,the projector will enter ECO mode to increasing the using time automatically.
ECO mode limits the screen brightness. It does not limit the volume.For increasing the using time,it's recommended to set the volume no more than 50% under ECO mode.
Users can manually turn off Eco Mode by going to ""All Setting"" -- ""Display&Sound"" -- ""Picture"" -- ""Brightness Mode"" -- ""Eco Mode "".
What is Eco Mode?
