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"A hyper-realistic cinematic close-up of a modern iPhone lying on a tech workbench. The back glass panel of the iPhone magically detaches and opens up. A hand removes the original internal battery. Immediately, thousands of glowing, microscopic batteries start pouring into the empty phone cavity, filling it to the brim. As the back cover is pressed back on, the iPhone physically starts to expand and bulge, growing larger and thicker in size, appearing overstuffed and pressurized by the massive volume of tiny batteries inside. High-end 3D animation, 4K resolution, metallic textures, studio lighting, smooth slow-motion."