56% is not a low battery in everything else we do in life so if that is what you are asking then yes.
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You are right. For most things, we would not consider 56% low.
When we apply power we draw down the cell voltage. These battery's are better able to provide that draw when they are warm. (40c or more)
But they don't start out at 40c. At least not in most cases. So when we start with a full battery it is not warmed up yet. But it has enough voltage
that we
can't draw it down to the shutdown point. As we use the battery the margin between full voltage and the shutdown point decreases.
But the battery is getting warmer and better able to provide current draw and maintain the voltage above shutdown.
So when we start out at 56% we don't have the margin that a full battery has and the battery's temperature is below it's best working temperature
allowing it's voltage to be drawn down to a critical point. Especially if full throttle is applied.
This is the problem for us cold weather fliers . The battery never gets up to 40c. In the winter when the outside temp. is 0c I am landing with a 25c battery.
But as long as I do not push it too hard in the bottom half of the battery everything is fine.
I would hazard a guess you were at full throttle.
There is an option to show the cell voltage on the camera screen.
It will give a warning if the voltage is dipping too low.
There is a great article on batterys on this forum if I could just find it.
It would explain this better that I can.
