My question would be - Why?
Even if you where using some kind of VV add on, you wouldn't need that kind of voltage.
You'd have to use a 5 ohm atty/carto to even hope it wouldn't pop the first time.
I've heard of people using these 4.8v batts with a 2 to 3 ohm atty/carto to get a simulated
5v
vape on a single batt, but stacking 4.8v batts seems dangerous. Especially since they look
like they are constructed out of stacked cells to begin with.