| CPC B62J 43/10 (2020.02) [B60R 16/033 (2013.01); B62M 6/90 (2013.01); H01M 50/233 (2021.01); H01M 50/249 (2021.01); B60L 2200/12 (2013.01); H01M 2220/20 (2013.01)] | 10 Claims |

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1. A bicycle battery device, comprising:
a bicycle frame tube of a bicycle frame;
a battery insertable into the bicycle frame tube in the longitudinal direction thereof through a battery opening; and
an adjustment element arranged between the bicycle frame tube and the battery;
wherein the adjustment element has an outer contour which at least partially corresponds to an inner contour of the bicycle frame tube, and
wherein a distance between contact surfaces of the outer contour of the adjustment element and corresponding surfaces of the inner contour of the bicycle frame is 0.5-3 mm.
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