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Do you have the experience that when you chang the battery of the remote control or somethings else, it's hard to take it off from the little space. Even you take it off, it is easy to roll off from the table and falling down to the floor.
"CIRCLE battery" can help you to have good using experience when you doing such things. It changed the shape of the cylinder. Using different size of the diameters. So when it start to rolling, the shape can make it roll back instead of falling down. By the shape, people have more space to take it off from the product, this really help the elderly and the child to use it.
Taipei University of Technology
National Taipei University of Technology