How much juice should I use? Never did this before?
I leave the battery end condom on, drop in 37 drops on the other end right down the center, the last 10 or so I go slow. Then I let it sit for awhile (10 mins or so), then vape away. Never had a problem doing it this way, and I have used this method on hundreds of cartomizers.
do you fill from the battery end or from the mouthpiece end
Sorry, 37 drops is using the Tasty Vapor bottles. I just tried with the bottles that liquids like dekang come in, and got 30 drops in.