July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!
SOC/Battery Temperature Auto Idle Stop Conditions
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
Auto idle stop is disabled when the IMA battery module state-of-charge (SOC) becomes too low, or the battery temperature becomes too hot or too cold.
Fig 1: SOC/Battery Temperature Auto Idle Stop Conditions Graph