I have a new p18 and I'm running two 123a batt but I'm getting mabe an hour out of them they are brand new . I have some 18650s and I know they last a lot longer 3.7 volt at 2600mah vr. 3.0 volt at 750 mah sacked what I want to know is what kind of time am I lookin at around about I vape 5 mls a day if that helps
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