opjose

Let's work it out...

That's a 4000mAh 20C rated pack with a rated 30C burst.

So assuming 20C x 4000mA, that pack can sustain 80A @ 14.8v

80A x 14.8v = 1184 watts.... so you have plenty of overhead there.

Let's assume that you only run the plane @ 15C most of the time.

15C x 80A = 888 watts.

So if you run the motor at max capacity ( full throttle ) ALL of the time, your pack should remain quite cool.

Normally you'll only need 70-78% throttle throughout your flights, so you'll get good runtimes and a long pack life.