I took the N80 40×4+40 8 wraps ohmed out at .29. I put Samsung 20s in it. Thats 30 amp batteties. Ohms law says its .29 ohms, 21 amps, 6 volts, and 116 watts. It blew more vapor then the Drag 2 with the N90. The Hex Ohm works awesome if u know how to build to it.