i would love some opinions on pens you all like for concentrates. I have one that only takes the pre-filled oil carts. Looking for one I can load with all concentrates. Thanks
A battery and cart from separate companies will save you a couple bucks. If money is no issue it will be easier to buy a full pen from the one company as you will have to do less research to make sure the battery and cart are compatible.
Just about any e-cig battery with adjustable voltage and 510 or 601 threading should work on those carts. Also I have found w9 to be more reliable then gentlemanvapes when it comes to the lifespan consistency per cart. This is based off of experience and may differ from other's. Hope this helps!