The smoketip is a kr808 battery, it is a good unit I have one they replace defective batteries for life....you can get prefilled kr808 cartomizers from a variety of sources or you can refill the smoketip ones you have. It is cheaper to buy blank kr808 cartomizers and fill them with the juice of your choice and honestly it taste better as your not getting the old flavor mixed in with the new
....that being said smoketip menthol is still one of my favorite menthol vapes for some reason, I think it is just a Chinese menthol but I have always liked it, its fresh and a bit more mint than menthol but it does it for me. I found the standard tobacco flavor to be so bad that it actually turned me off from tobacco flavors for awhile.
Enjoy your unit, the kr808 is one of the better ones for its size and probably the best automatic unit out there. Order some juice and some blank cartomizers and it will be much cheaper in the long run.