By A Mystery Man Writer
Shimano Di2 Battery holder seatpost For 27.2 - 28.6mm seatpost
MPart shimano Di2 seatpost battery mount 30.9/31.6mm – Slam69
PRO Di2 Battery Holder Seatpost Di2 Built-in Battery Mounting
DI2 seat post cover
Battery Holder PRO Di2
Rubber mount for installing Shimano internal Di2 battery into seatposts without mount option as standard
PRO Stem - Di2 seatpost battery mount for SM-BTR2, for 27.2 - 28.6mm seatpost
PRO Battery Holder Seatpost
PRO Di2 Battery Holder for Fork Steerer (incl Tool)
PRO Seatpost Di2 Battery Holder 022255476096 – Pit Crew Cycles
Texas Cyclesport Shimano Di2 Batteries, Chargers & Parts