IIRC, that was the guidance from SRAM, or maybe it was a suggestion from a review. Removing batteries is a downside, time consuming and a potential point of failure, btw.wheelbuilder wrote: ↑Thu Feb 14, 2019 5:41 amWhoever you are hearing that from is WAY off. I'm not high mileage but do get 120-140 miles a week. I charge my etap batteries about every 3-4 months. Leaving them attached to derailleurs while bike is on a car rack drains them much faster as the system is constantly going to sleep/waking up. This has a big effect on battery life. I also have battery life indicator field for rear battery activated on my Garmin, so this gives an accurate representation of battery life instead of guessing or waiting for derailleur status lights. Once a month? No way.TheRich wrote: ↑Wed Feb 13, 2019 4:47 pmI'm actually kind of curious what higher mileage eTap users do to keep their batteries charged. I charge my Di2 every month because that's the only interval I can remember and if I forget here and there it doesn't matter. From what I've read, that's the minimum for eTap, and forgetting can have major consequences.
My last ride according to di2stats:
Start Date 2019-02-12 11:25:54 PST
# Total shifts 1132
# Front shifts 54
# Rear shifts 1078
Time b/t shifts 12.9 seconds
Moving time 4:03:12
Distance 71.58 mi
Ascent 6148 ft
Descent 6033 ft
I just got my BT transmitter 10 days ago, but my longest time b/t shifts was 34 seconds on a very easy ride, the average is about 25sec. The pasted ride had a lot of shortish climbs, so a lot of shifting. How would eTap deal with 9hr/week of that? Could it make over 5000 shifts over the space of a month between charges?
I shift a whole lot more than I thought, thanks Di2.