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@dubtap
Anyone seen detailed "this is what I did" for an internal battery install of Ui2 on a Cervelo S2/S3?
Cervelo have a pdf for Di2 external battery install and I have seen tidy DIY internal battery setups, but I don't know what the new wiring up front means for drilling holes in frame etc. or if it just looks a mess.
Research porpoises only of course.