Mon - Wed: 10:00am - 6:00pmThu, Fri: 10:00am - 8:00pmSat: 9:00am - 6:00pmSun: 11:00am - 5:00pm
3T's Battery Holder holds a Shimano Di2 seat tube battery(Shimano SM-BTR2) inside your seat post, enabling easy fitting and removal of the battery. It is compatible only with 31.6 diameter seatposts.