“These are great and totally leak-free to be portable, though I get through the pods too quickly!! I find a single charge is good for the whole pod.
The downside is the ePen starts to split after a while, I believe, near the pod, and you have to switch the orientation of the pod sometimes for it to fire. Eventually the ePen fails to hold the pod securely and will not fire, which is a shame - as I suspect the battery is still good.
I do have a special edition of the ePen (a red McLaren, I think?) which has outlasted at least 3 of the standard ePens currently on sale.”