I'm having a problem with mine fitting on my batteries, they won't screw on all the way. anyone experience this?

NO....STOP... Do not force the Cool Cartos onto to your battery and risk damaging your battery threads. This was an issue from the factory where the threads were slightly oversized.
Take a nail file or 400 grit sand paper and lightly file down your battery threads, then try screwing on your Carto until it works. This will not damage your battery from using other Cartos like Wow Cartos or Premiums.
You will also have to perform this on a PassThrough if you have one. Again, do not force it or work it back and forth or you might strip your battery threads.
This fix is not some dangerous passage into the unknown, this is straight from V4L.
YouTube - CARTOMIZERS NOT FITTING YOUR BATTERY?
It takes all of 2 seconds and it will not harm you batts or passthrough or diminish the performance of either with other cartomizers. A simple cuticle file will also fix this problem, I'm sure you ladies might have one of those or have a friend and an extra 15 seconds in your day to try it.
There is no reason to force a $1.XX Carto and risk stripping the threads on $12.00+ battery. But hey, whatever...to tell you the truth I don't really care.
I just pass this advice on to those that want to act on it and in every instance they reply back with "Thank you so much, works like a charm."
I'm having the same problem and I refuse to do anything to my batteries. Luckily they fit my PT so I'll only use them on that. A bit frustrated with this problem. I won't buy them again.
Why would you refuse to do anything to your battery? You are keeping yourself frustrated. It actually isn't the carts, it is the batteries, just like most things that have threads. What the filing does is knock down the threads so that the carts can go on there.
Don't act all high and mighty, V4L's batteries aren't the only one's that do this.
Sanding the threads takes two seconds and it works perfectly. Complaining online that you're not going to sand them takes much longer.
Just sayin'.![]()
The youtube video is from early June. My order for blank Cool Carts was this last week. So, they know there is a problem and are still selling these.... hmm. Just doesn't seem right, but as I said, I'm able to use them on my PT, so not a total loss. Live and learn.