Patent attributes
The present disclosure is related to a field of e-bikes that discloses a bicycle frame tube, which may be a down tube of a bicycle frame. The down tube includes at the bottom-bracket-side end a battery opening facing in the longitudinal direction of the down tube such that a battery can be inserted into the opening from below. Further, the battery may be switched on and off by a switch provided at the battery. The bicycle frame tube may include a switch opening such that a mechanical switch with an operating element may be arranged in the switch opening to mechanically actuate the on/off switch of the battery. Furthermore, a charging plug as well as a charging condition indicator may be provided at the lower end of the battery or the battery housing of the battery.
