v2 cigs cartridge reviewV2 Cigs Cartridges (also known as cartomizers or refills) are available for their classic and ex model types. While all model cartridges are good quality, the classic and ex versions cannot be refilled as they are air tight to prevent leakage. However, V2 has recently unveiled a new line of cartridges known as ex blanks. EX blanks literally turn your ex batteries into a full on tank systems, allowing for a more economical solution as you can actually refill them with your favorite e liquid. V2 takes pride in offering cartridge batch dates, which in turn allow customers to provide instant feedback and be allotted reimbursements for any faults or imperfections.