I did, here's what I came up with:
went to the ohm's law section, at .15 ohm, at 4.2 volts, puts me at a current of 28 amps with 117.6 watts. Peachy, that's what I want.
Then I go to the wrap coil section, I do 24 gauge Kanthal aiming for .15 ohms resistance, dual coil, with 2.4 mm diameter...