Puppy doge decided to X-Cross ish on his Di2 Road bike. I mean he doesn't pay for it - so what's the diff? Anyway he takes the hose high pressure setting to it and ends up with a clean bike and water trapped in the seat tube (right - there are no holes and it was sealed) right where the Di2 j-box ^^ is. So we take out the seat post (with battery) and shake the bike out and about 4oz of water comes out. Dry upside down over night - it all works fine.
Still - not going to say I could ride it home after falling off the harbor dock into the ocean as my cable bike did...
But its pretty good.