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Various kinds of batteries are used widely in many electric equipments. Those products are very useful, but we sometimes feel it a bit uncomfortable when we try to put it out to change because they have a shape of thin and long cylinder. So we often fail to catch the battery out of its shape. I applied the principle of levers to solve this problem. I simply changed the shape to put the battery out easily. This battery has a different shape which has six cutting surfaces around the (+) pole. We can realize the direction of the battery. If we push the cutting surface, the opposite side of the battery will come up so we can change it easily.
Konkuk University
Ansung-si Kyunggi-do, South Korea
Choi Duck Soo, Kim Bo Joong, Yoo Chang Hyeok
Konkuk University
Ansung-si Kyunggi-do, South Korea
Choi Duck Soo, Kim Bo Joong, Yoo Chang Hyeok