Patent ID: 11952079
Assignee: TEKTRO TECHNOLOGY CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 4:
5. The method according to claim 4, wherein after the at least one of the gear positions of the derailleur is invalided and non-selectable by the derailleur, the method further comprises:
determining whether the remaining capacity of the second battery is smaller than or equal to a second lever battery threshold, wherein the second lever battery threshold is smaller than the first lever battery threshold;
when the remaining capacity of the first battery is smaller than or equal to the second derailleur battery threshold, or the remaining capacity of the second battery is smaller than or equal to the second lever battery threshold, the derailleur is fixed in one of the gear positions where the derailleur is currently located to prevent the derailleur from being shifted to another one of the gear positions; and
when the remaining capacity of the first battery is larger than the second derailleur battery threshold, and the remaining capacity of the second battery is larger than the second lever battery threshold, the derailleur is allowed to be shifted to another one of the gear positions that is not invalided and non-selectable by the derailleur.