-
Yeah good point about the stem.
It seems theres two versions, one for normal stems and one for the tharsis stem -https://www.pro-bikegear.com/uk/accessories/di2-accessories/gap-cap-exp-di2-battery-holder
But how does it work with a normal stem?
edit - never mind, by this pdf, it looks like it doesn't work with a normal stem?
https://www.pro-bikegear.com/_assets/pdf/user-and-technical-manuals/prsi040a.pdf
TotalShanner-
I can't see it happening without a specific stem/cap and the steerer cut precisely to length. You have to have some space between end of steerer and top cap for a cable to sneak out.
I have the tharsis stem and it is all well made. the headset preload system works fine and the stem grips the steere really well. as it was made for mtb the design appears fine. i wasn't able to use it due to steerer tube being too short but it could be great for a minimal 1x set-up.
maybe these days with all integrated systems there can be an oversized headtube with a hole in steerer tube. But anyway with wireles aroudn the corner this is all going to be history.
Glws
but you also have to have a stem + top cap that allows an e-tube to exit at the top, ie something like their tharsis