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When using the battery the most difficulty is to remove the battery due to the tight battery cell.
Simple - Battery is a new design battery with a dent on it. It is more easier to remove form battery cell, also with power loading measurement function to alert power exhausted.
Humanity design makes user more convenient.
Oriental Institute of Technology
Department of Industrial and Commercial Design
Taipei city, Taiwan
Lin Chun-Tune,
Oriental Institute of Technology
Lai Yu-Han,
Oriental Institute of Technology