Originally Posted by
colnago62
Has anybody seen or heard of a battery failure on Di2?
I have ridden thousands of miles with people on SRAM or Shimano "battery" systems and never once had a ride interrupted by a dead battery or such. I have ridden numerous times with people who have shifting problems, most likely from an old, dirty cable.
Di2, eTap and EPS are the future for the road. I would also add, give people some credit. Tech that does not work, generally does not stick. Think about electronic shocks in the MTB world. They sucked, a fact that people figured out pretty quickly. Di2 and eTap are popular because they work and offer people something that makes it worth it.