Hey everybody, new member here. I have had my Premium e-cig since April and I love it, but recently my roommate has gotten me into refilling my own cartridges (I've got my first bottle of liquid coming in the mail). It works great on the still-active cartridges I have lying around, but I'm running low. Premium doesn't sell their own empty cartridges, but I'm wondering if anybody can recommend compatible empty cartridges so I don't need to buy another pack of pre-filled. It seems to me that many companies use the same style batteries with their own brand's printed logo, so many different carts would work, but I'd rather not risk wasting money. This is my battery - White Color Battery - PremiumEstore LLC - so my battery is apparently a KR808D? Therefore, these - KR808D-1 blank cartomizer - package of five black - would work with my battery? I'm not very educated on the technical details of e-cig batteries and cartridges, so any insight would be greatly appreciated! Thanks for your help!