I personally put the Shimano mountain bike line of the junction A box on my TT bike instead of an EW90 or bar end junction as that has an display. It shows battery level, gear selection (both chainring and cassette) along with what shift mode it's in. It also has the Bluetooth wireless unit integrated into it to boot. Just press the button on the junction to turn on the display and I can see all of it.
Have the SC-MT800 and use and stem faceplate bolt adapter to mount it instead of on the bar (since there isn't room to mount it as it is originally designed with a TT base bar...at least on m bike).
Another bonus is when adjusting the derailleurs the unit displays the micro-adjustment position it's in. Helps out quite a bit and then I don't have to sit there and count if trying to remember a setup based on different wheels or direct drive trainer setup.
For my road bike I run the EW90 and experience the same thing of the shifter actuating the derailleur checking the battery level. Since I use manual shift mode I just use the front derailleur button instead of the rear so I don't shift the rear several gears.
Have the SC-MT800 and use and stem faceplate bolt adapter to mount it instead of on the bar (since there isn't room to mount it as it is originally designed with a TT base bar...at least on m bike).
Another bonus is when adjusting the derailleurs the unit displays the micro-adjustment position it's in. Helps out quite a bit and then I don't have to sit there and count if trying to remember a setup based on different wheels or direct drive trainer setup.
For my road bike I run the EW90 and experience the same thing of the shifter actuating the derailleur checking the battery level. Since I use manual shift mode I just use the front derailleur button instead of the rear so I don't shift the rear several gears.