Right, that makes sense to me that it could not be in process during the flight. But nothing stops someone from putting an auto-discharging battery into the P3 and going for a flight, along with the possible havoc it caused with battery voltage levels. Actually that makes even more sense when you think it: When a battery is discharging (either during flight or by auto-discharge) the voltage levels are suppressed. Suddenly take away the power load and the voltage will spike for a short period of time -- so you put an auto-discharging battery into the P3, hit that button on the battery, which shuts off the battery discharge load. The P3 turns on, senses a normal voltage, and makes an incorrect assumption about starting power levels based on further assumption that the battery has not been recently discharging... I admit I am making some guesswork of how the P3 firmware logic might process its sensors, but I have some experience with battery behavior in response to loading.