I am Vaping the v2 brand, I guess I'm not completely familiar with everything yet, but it's a v2 manual battery, I think it is like a 4-4.2v battery. Uses Cartomizers, I'm messing around with the flavors they offer. My question was really to see if anyone has used the V2 brand and another brand that could make a good comparison, I just really don't know if I did ok in buying this one or not.