This is a 9V battery hack video. This video explain how to hack the 9V battery and uses it for other devices. First, using pliers, open the chasing of the battery. It’s nothing dangerous inside the battery. There are six small batteries inside the 9V battery. Actually, this small batteries are the quadruple batteries. Each battery has 1.5V. These batteries van be used to power the electronic devices such a MP3 player. Here is the video: