My rule of thumb is to NEVER buy a PV from any vendor unless it has the mah rating. 100 mah= 1 hour normal vaping.
Good Luck.
Figure the battery, being cigarette sized isn't going to be much more then 200 mAh, if that. Might want to get two kits since they only come with one battery per kit. Hard to vape when it's on a charger.
That's why many of us recommend something like the Kgo. (2) 1100 mAh batteries so most folks can vape all day on just one battery. They also tell you the voltage and threading ,510 being the most common threading and easiest to find aftermarket parts for.
Good kits with decent batteries, charger and some cartos generally run $40. Less then a carton of smokes so it's not like you're out huge sums of money if they don't work for you. And the Ego/Kgo/Riva and Epower all come with much larger batteries and last most of us all day without needing recharging. And with a high enough voltage to get a good vape.Toss on a tank and we don't even need to refill throughout the day.