Ohhhh, I see now, and these are the prebuilt coils right?
KangerTech OCC Vertical Subtank Coil (5pack) - Replacement Heads - MyFreedomSmokes
would you reccomend learning how to build on the RBA section or should I stick with OCC?
Sorry for the late reply, It's labor day weekend, I am a baker, and I've been putting extra time in making some rolls.
It's fully up to you. OCC coils offer a worry free setup. Simply put the coils in and go. Like others have said, they offer a low resistance and a high resistance coil. The low resistance coil uses more power, and produces more vapor. The higher resistance coil uses less power and provides less vapor. I would find out which coil you prefer before ordering replacements.
Now, What zoidman said was absolutely true. Rebuilding the coil yourself is worth giving a try if you don't mind a little tinkering. using the RBA section allows you to essentially make your own resistance coils to suit your wants. It's not as hard as you think, and it's part of the hobby aspect of vaping. And like what Zoidman says, if you aren't quite getting things right, just screw in an OCC coil and work on it another day. That's why I love the Kanger subtanks.
Also, building the RBA is much cheaper. A 100' roll of 28 gauge kanthal would cost me $4.50, and that would be for the 1.2 - 1.5 ohm range. Same with 26 gauge. (.7-1.0 range) and 24 gauge will be a bit more. I usually get my wire from
Lightning Vapes, and he's been my go-to source for wire. Cotton can be cheap as well, maybe $10 and that lasts me several months. Of course any failures, and most of the time you are the only one to blame.
So, yes, if you want to lay with the RBA section, I do recommend it. If anything, it gives you a better idea of what is going on with an Ecig.