4 ms·black wallpaper will be awesome for battery life once OLED laptop screens come outby jacurtis 3y agoblack wallpaper will be awesome for battery life once OLED laptop screens come outhbn 3y agoI mean I guess if your primary use of your laptop is sitting on the desktop with no windows open, just staring at it?Sunspark 3y agoIt's not really true that black wallpaper saves battery. Black wallpapers have been shown to make almost no difference on smartphones.