How often do you need to charge Di2, and how do you charge an internal battery? A long USB cable or?
Not trolling I just don't know.
USB cable into the junction box at the stem.
I've never run it down - reviews say at least twice as long as eTap 2500k+
I charge it before big races.
@hippy started
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How often do you need to charge Di2, and how do you charge an internal battery? A long USB cable or?
Not trolling I just don't know.