A few months ago I bought the Bluetooth unit for my Di2 and I immediately noticed the battery life got much worse. Recently my battery got to where it was running down in 2 days. I thought my battery had died so I dropped $120 on a new one. It’s been on for 2 days now and it’s already down to 50%. I just took the Bluetooth unit off but was wondering if any of you had noticed an increased battery drain when using the Bluetooth unit. When my bike was new I got 1,400 miles on it before I charged, and even then it was just down to 50%.