How can I turn off my Joule? Hold down the main front interval button and the "+" button together for 3 seconds. Related articles Joule Quick Start Guide I lost/can't find my download cable, how can I download my Joule? What cranks are compatible with the C1? How do I know how much battery life is left on my derailleur or shifter battery before I go out for a ride? How long do Rival eTap AXS shifter batteries last?