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  1. #1
    RoadBikeReview Member
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    Jun 2008
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    Cervelo S3 2014 - Internal battery conversion

    Hello guys,

    I'd like to convert my mechanical 6800-based S3 2014 to 6870 Di2.

    The internal battery option is very appealing, and has been covered multiple times, but there is one important unanswered question: does it apply to frames of all sizes?

    If you look at my 48 cm S3, the seat tube is pretty short:


    Do you know if it fits? Does the internal battery fit into the lowest (narrowest) part of the seat tube? If it only fits on the top part, I fear it might be a no-go.

    Thanks

  2. #2
    RoadBikeReview Member
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    Nov 2005
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    575
    I believe the internal battery goes inside the seatpost, so, it would not matter. That is the way it is for most bikes unless the cervelo is different.
    2014 EVO Di2, 7970 Di2
    2017 Shimano PD-9100 Pedals
    2012 Shimano7970 Di2
    2014 Centric Carbon Clinchers, 38mm and 60mm
    Second set of whees: Shimano 7900 C35 tubulars

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