Q&A: VNAV, GPU Engine Starts, and Insurance Insights

[@bartoszskowronski]

hmm so putting diode in series with battery, and you can short/bypass that diode (for normal operation). that would be the best solution for low battery state and starting from GPU. diode blocking charging battery and provide power if GPU is disconnect to early. diode together with proper resistor in parallel, would provide safe charge of fully depleted battery from GPU. system that in non aviation world would cost max $100.