Originally Posted by
Badger6
Happy to help.
May I suggest that a wireless unit is useful for a whole lot more than just giving you a battery percentage in a data field on your cycling computer (on Garmins it displays in 10% increments until 20%, then it goes to 5%). With the BT module added, you can use the eTube app on your phone to adjust (program) the shifting, and it will also allow you to control certain cycle computers (Wahoo and Garmin for sure) if you have the Di2 integration buttons on your shifters (DA R9100, Ultegra R8000, GRX 800).
I did not realize how much I would appreciate controlling my Garmin from the hoods. When I use the Garmin on a non-Di2 bike, I always mash the top of the hood a few times before I remember I have to reach over to the computer to scroll. Not a huge deal, but one of those minor conveniences you really appreciate.