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Adjustable battery / battery

Adjustable battery
Adjustable battery

The size of the unified battery, Join the concept of screws, Incorporated in the portion of the intermediate carbon rod, The minimum number of battery size as a reference. Shun, counterclockwise rotation can be resized, Size of the battery to extend Medium and small. As a matter urgent need at the moment it can be used for emergencies. Do not worry when the optional battery, To size headache.

University

僑光科技大學

僑光科技大學
彰化縣, Taiwan