I recently got one of the small battery voltage readers. I also have been struggling with why my flight times given my load are nowhere near what others are reporting. My voltage tester is consistently recording my battery voltage post flight....coming in and touching down soon after continuous red flashing starts.... at 11.5. I assume that, under power, the battery voltage is up and down less than that, but that seems a high ending voltage. Could this be the reason for my short flight times? Could My Ph internal voltage sensor be off and shortening my flight times?