In the video, a person is seen holding a black Samsung phone in their hand. The phone is turned upside down, revealing the back cover. The person then uses a metal tool to pry open the back cover of the phone. The person proceeds to remove the battery from the phone. The battery is black and rectangular in shape. The person then replaces the battery with a new one. The new battery is also black and rectangular in shape. The person then closes the back cover of the phone.