Did you select the motor and Prop? That is what will tell you how many cells to use.
What Prop are you using?
Then you need to know what the amp draw will be. If the MFG does not provide this then you need to test it with a wattmeter. I would normally recommend testing ANY set-up that was not installed by the MFG to confirm amp draw and watts.
Then we can do an estimate of the flight time at full throttle.
Last edited by aeajr; 12-15-2014 at 09:02 AM.