Battery planning

[Flyn2024]

Because I'm new I have to ask
with the 3 battery pack fully charged and the controller at max charge .
What can I expect to encounter? controller or 3 pack running out first? and if so what suggestions might I CONSIDER

 

[old man mavic]

@Flyn2024 with my Air 3 i can fly three batteries down to 30% each and have at least 2 steady lights still showing on the controller