The type of fuel, prop selection, throttle management & rpm all affects the fuel consumption.

I'm using Coolpower 20% nitro heli with 18.5x12 wpn at 7,200 to 7,300 rpm, & I hardly go over 3/4 throttle on P, a few burst of 3/4 throttle for F, and I can easily get 13 minutes out of the 16 oz tank. My high needle is about 1-3/4.

As for battery, one 4.8V, 2,000 mAh ni-mh, good for at least 3 flights before recharging.

Adrian