Originally Posted by
Bob Ross
^^^This. You can get >10,000 miles out of a single charge if you never shift gears.
Battery life is entirely dependent on # of shifts, not # of miles ridden.
Yes and FD shifts take more umph than the RD..
Not sure how consistent this behavior is, but fwiw my wife's system was giving her the 50% indicator for several rides (4 or 5, maybe ~250 miles total) and then suddenly in the middle of that 4th or 5th ride it went into Battery Low, Disable Front Derailleur mode. iow, the transition from 50% to <25% seemed to come on very suddenly.
When I took my system in to get the firmware update I was told my battery was almost dead. Oddly, I had just charged it about a week before that.
I am going to keep a close eye on it now that I have the battery level displayed..