I have two units of Type S since 2 years and i have always the same issue with the battery exchange: there is a small gummy ring inside and once you open the cap, replacing the ring on the same place is very tricky. The risk is that if you dont place it exactly as it was, water may leak inside and damage the contacts. this is really annoying and i think I started damaging one of the two because i see some oxidation happening because of water. Still battery works but sealing needs to be done with some extra tape on top.

my question is: in case it will be damage and not working anymore, can I just replace the spider of Type S (I have Rotor 3D+ with cranks) with the new NG? If yes, can you point me out the link to the exact model I should order? I am never sure which to pick on the website (Cervelo S3, model 2016).