The mah of a battery determines how long it will last between charges. The higher the mah rating, the longer it can be used before completely discharging. Heat is just the product of the equation here. Battery voltage combined with the ohm's in the atomizer will determine how intense the vaping experience is. The general rule is that low-resistance (LR) should be used with batteries that are at least 3.7V. Lower voltage batteries will be drained faster because of the power being generated and in some cases, the battery can be ruined. That is why using LR attys on PT's or regular batteries isn't recommended. There are people here who use LR's on their eGo's, but they do so with the understanding that there is a certain risk involved (at least, I hope they do!

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