Depending on the dynamic wallpaper you use and your device, you can experience battery depletion when utilizing one. Dynamic wallpapers are animated or change over time, and they may use more battery life and computing power than static wallpapers. Particularly resource-intensive, animated wallpapers could consume more processing power and battery life than static wallpapers. This is so that the battery won't deplete as quickly, as the animation forces the device's processor to redraw the background image constantly. Generally speaking, using a dynamic wallpaper on a device with a low-power processor or a device with a small battery capacity could cause a faster energy drain. Nevertheless, the effect on battery life will vary based on the particular wallpaper and device you use. Consider utilizing a static rather than a dynamic wallpaper if you're concerned about battery life and want to increase your device's battery life.