Roger your advice T8, I would not ask the 302 to run a half or fully depleted oudie. In my system, In this years system I start with my oudie fully charged and the 302 interconnect cable is just keeping the oudie topped up. I have about 30 hours on the new system and no issues whatsoever so far. My oudie igc will run easily for 7 hours on its internal battery, but I like the insurance of having some power going to her for the longer flights.