Hi Jorge,
Are you talking about the 5S Clearomizers? If so, they will work great on the iPow2. I used my 5S on my vAres as a stealth vape setup, until I switched to the Joyetech Ego AIO. For the iPow2, I'd go with either the 1.5 ohm or the 1.8 ohm VOCC dual coils.
My recommended tank for...