Originally Posted by
Badger6
The FD stops working first. The system will stop shifting it, to preserve battery power to run the RD. The FD uses a lot more power. I can't remember how many shifts are left in the RD at that point, maybe 100? With careful gear management one in theory can limp it him on the RD alone.
Gotcha! Thanks again for your help. It's good to have even a vague idea of how many more shifts would remain. I'll be on the rm -rf wave, though, and will charge before it turns red, so hopefully it'll never get to that point.