Sinikal
I'm refilling my carts (M-401). In my main kit (small zippered pouch) I have everything I need including a 30ml and a 2.5 ml bottle (for my pocket), 4 bats, wall/usb charger, 10 carts, 1 push rod, and 5 atty's. This way I always have what I need with me. One cart fill lasts for about 3-4 regular smokes, refilling about 5-6 times a day. I have been using the same cart for 1 week now and have had no problems. I use the 2.5 ml bottle to add a drop of juice on my atty before each use and fill carts on the fly. I use the push rod to raise the reservoir insert in the cart for easier filling.