Looks like a adapter housing a booster circuit. Says you adjust to 4.7v
buy turning a dial. Kinda leads one to believe it's variable volt from 3.3 to 4.7 if it's using dial but doesn't specify, just states the deal is used to get it to 4.7.
Anyway for $85.00 maybe someone else will try it but not me. You could get 2 vv box
mods from madvapes for that or 1 of several other variable volt
mods which would have more range and components more capable of handling it.
It should work but using the same battery at higher voltage with the same equipment you're going to decrease battery life.