Agreed. I've refilled the V2 cartos several times (without cleaning) with 15-20 drops each time, and they still look like they might handle a few more refills. Makes me wonder, are they somehow getting something beyond the standard Boge or Kanger cartos? I really don't think so. No more than their
batteries are something beyond standard Chinese batteries available from a dozen different sellers for half of what they are asking. Despite a post I read somewhere from the V2 president stating that their batteries were built to a particular standard, based on my very limited experience comparing the V2 bats to other sellers, there is nothing special about them other than the draw is a little different (less airy than on the non-V2s), but the life or voltage seems to differ little - if at all - from other, cheaper, KR808D-1 batteries. The biggest difference in my
vaping experience so far has been the pass-through, which changes the game entirely.
There is just so much that is unknown about any of this, which is why we buy and buy, and evaluate, and discuss.