It is my opinion that my Zmax (with stacked batteries)has even more power than my version 1 Vmax so it will be quite beastly.All along the stacked 18350's in the VMax is what was giving the beastly power output that I have grown to absolutely love and makes any other device not satisfy me at all. Haven't even used the ZMax that much because of the low power output in 18650 mode. Can't wait till the 18350 extension cap comes...it's gonna be a whole new PV.