How long does the battery last, and what's the charging process for the WHEELTOP EDS TX/TT?

The OX2.0 battery delivers approximately 24,000 shifts per charge—roughly 60+ hours of typical riding—and charges fully in about 2 hours using the proprietary magnetic charging cable. Simply attach the magnetic tip to the port on the derailleur; the battery is user-replaceable by removing 4 screws with a 2mm hex key if you need extended range on long tours.