Originally Posted by
danarello
My brand new road bike that has 12 sp Di2 shifting won't charge properly. I checked the pins, snapped in the charging cable to the RD and tried several different charging blocks. Now, when It's plugged in to charge I get 1 Red led light followed by 3 Blue led lights. No green! My LBS sent me a new battery and cable but I haven't tried that yet.Any ideas what's going on?
UPDATE: I have a RD-R8150 Ultegra Di2 12 speed. I've been reading the manual, calling LBSs, posting here on BikeForums, calling Shimano and chatting with BikesDirect.com. I've got the E-TUBE Cyclist app on my phone but since the battery is dead it won't connect to the Di2 now. I've learned about the 3 different shift modes and what the different colored lights mean. When I first charged the battery I got a flashing green light indicating a partial charge. But now, when I press the program button on the RD, I don't ever get green. Only red, then blue which indicates dead battery and normal shift mode. And, when I plug in the charging cable, I don;t get the blue light that indicates charging. So, at this point I'm going to take it to the LBS and have them diagnose what is going on using a PCE02 linkage tool. Bikes Direct.com did send me a new battery and charging cable but I still have to pay the LBS a labor charge for diagnosing the problem. I love the bike, but not the Di2 headache! What irritates me is when BikesDirect.com says, "We've sold 100 of those bikes and never had a problem!" Well lucky me!