ok so I got my first dripper an was wondering why if I build a .2-.5 coil it's any different than a tank running the same Typ of coils can't be used on a mec mod
The FUhattan does not have a hybrid top cap so should be ok to use a subtank on. You need to make sure that your battery can can handle the AMP draw from the tank. Use an OHMs Law calculator to see what the AMP draw will be. The issue with subtanks and mechs are with the hybrid connectors shorting out on the 510 connectors. Since you don't have a hybrid connector you just need to make sure your batteries are safe to use with the what OHM your tank is.
Do you know what the battery is?
Almost any name brand 18650 will push 8amps, its when you start getting above 20amps that you have problems.
Lg HE2/4s, HG2s
Samsung 25Rs, 30Qs
Sony VTC4/5
If its any of those you should be golden at <8amps
sorry i am new to mec mods
True, I missed the post with the picture in it.
The only 18650s Ive seen labeled at 3k mAh are the HG2, 30Q, IMREN and eFest.
Im assuming the last two are re wraps of some sort.

I like the Arctic with the .2 ohm coil on my XXIX mech.. Running the IMREN 35A batt with no issues at all.. Note because this mod uses a hybrid top cap I modified the pin on the Arctic to protrude about 2mm..works and vapes great, safely
I know, thx!Just as long as you know, Imren is not a battery manufacturer. They re-wrap batteries from a variety of manufacturers. Their 30 to 40a specs are exaggerated. Their so called 40amp battery is really just a 20amp or less and runs very hot at 20. Source
I know, thx!