I have now had the opportunity to refill the 510 cartomizer a few times. It is supposed to only hold about.3ml I believe and I have no reason to doubt that. So far, I have been refilling by removing the end and dripping 5 to 6 drops into the filling/batting. I then put the end on and roll it a little bit.
I am so far only getting about half of the vaping life of a new cartomizer. I may need to start using a syringe to make sure the batting is soaked to the bottom. I have also started putting a plug in before filling and giving a few shakes afterwards (the kr808 caps are a little big.)
One big thing - it is a lot less messy than filling a 510 cart. There is almost no mess for me right now when I refill. Also, I have been vaping this heavily, about a long, heavy vapor drag every minute at least. A lighter vaper would get a lot more mileage.
I am so far only getting about half of the vaping life of a new cartomizer. I may need to start using a syringe to make sure the batting is soaked to the bottom. I have also started putting a plug in before filling and giving a few shakes afterwards (the kr808 caps are a little big.)
One big thing - it is a lot less messy than filling a 510 cart. There is almost no mess for me right now when I refill. Also, I have been vaping this heavily, about a long, heavy vapor drag every minute at least. A lighter vaper would get a lot more mileage.