This question is for T-Rex 600 owners.

I have the Align High-Power Li-Polymer Battery, 16C, 22,2V 4200mAh in my T-Rex 600.
My flight time is about 7 to 8 mins. This is normal flight, not 3D. Do this time sound about right??
Do anyone know if Thunder Power make a battery for the T-Rex 600?

Thank you all for your answer and time!!
This is a great site!!!

SLewis