wow shortwing - that's not good
Both totally dying at the same time - may mean it's the charger and not the batteries?
Are you using the "fast usb" charger?
I hope you figure out the problem and can get remedy from the supplier.
I vaped on the same battery for hrrm... 6+ hours last night, went to sleep - woke up and I am still vaping on the same battery. Very nice, especially since I was so used to the 45 minute battery swap dance I'd been doing with the standard 510 batteries.
What amazes me is that there is NO decline in performance. I'm trying to vape this battery dead and it's still giving me amazing vapor production.
I haven't had the "sticky" ON switch problem since I reported it last night. I've been using the battery that "stuck ON" since last night, no problems so far.
Hopefully, it was a random occurrence and won't become an issue.
Good luck shortwing - please keep posting about how you resolve the problem? I'd be interested in learning how it got resolved