Nah it's all plug and play man. Ridiculously easy.
until something goes wrong
TBH, Di2 is that easy to sort out, I do like servicing bicycle with Di2 as all I need to do is diagnostic it and make sure it's updated.
The only thing I dislike about Di2 is that I can't exactly put the derailleurs in the part washer...
Easy. Plug the port (I keep the caps from new batteries) and you're good to go. Obviously don't drown the bastard, but I've experimented with some damaged ones and they've worked flawlessly after a good wash.
@edscoble started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
until something goes wrong