Looks like the Sparkplug 2 w/thermo deal ends May 17th .
SP3 to be out in June.
Just an update on the sale: on May 17th, the 510 adapter/cart will no longer be an option, and the sale will continue with 901 atomizers/adapters until they run out of SP2 stock.
I got mine today, and since I don't have 510 cartridges (and it just came with a blank, no fiber-fill -- just a bare atomizer), I dripped a bit -- great vapor. Then I threw my ego-t atty and
tank on the battery, and got a bit more vapor and an easier pull than the ego-t battery (probably just better airflow and slightly-increased voltage).
I still need to find batteries for the SP and the thermo (it's a new toy, so I gave it a day with the un-protected batteries just to play around, but I'm going back to my ego batteries until I find something safer). I've bounced to a few of the recommended threads on safe batteries, but is there a consensus yet on the best 3.7v 16340 for the SP2, and the best batteries to use in the thermo (both the best 3.7v long-life battery and best 6v battery)?