I am curious to know what others think about this topic. Is it best to power everything from one battery, or to have a separate battery for auxiliary systems such as position lighting and camera gimbal?
It seems intuitive to me that the latter approach is preferable for at least two reasons:
I don’t want auxiliary loads draining my flight battery.
I don’t want the auxiliary loads to interfere with proper measurement of remaining flight battery capacity. To clarify this point a bit - the position lighting driver I am working on generates significant current spikes as I flash several one watt LEDs twice a second. (Blink blink pause, blink blink pause, repeat).
My conclusion could indeed be wrong, which is why I am raising the question here.