• Finally tested with another shifter. Its 100% the left shifter thats draining. I can do two things from here:
    -Buy a new LH shifter
    -3D print a bar-end plug that has a switch glued into it, spliced into the Di2 cable that goes to the left shifter. This way I can disconnect the left shifter without much hassle when I get back from my rides.

    Sigh...

  • 3D print a bar-end plug that has a switch glued into it, spliced into the Di2 cable that goes to the left shifter. This way I can disconnect the left shifter without much hassle when I get back from my rides.

    and remember after every ride to turn it off. And turn it on again at the beginning of every ride. For me, at least, the former would be the hard bit of the plan.

  • You missed option 3, which is

    Pull the motherfucker apart and let us know what's causing the issue. Mwuahahaha let's see its guts!

    https://youtu.be/1uwkuQfTmdM?t=1

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