I am rocking a 3.5ml tank with a dual coil carto on a provari V2. Because the ohm rating on the carto is 3.0 I have to use my provari at 5.5-6.0 volts in order to get a decent vape. My question is, should my battery only last me approx 5 hours of so-so vaping (10 hits an hour)? I have used stacked lifpo 3.7V 700 mah batts in my silver bullet for longer than 5 hours so I was surprised to see the batts die so quick. Any information would be great, also these batteries are brand new.