It's actually the opposite, and why I like coolcarts better; my batts last longer than with Premium / Wow cartos. V=IxR, V is fixed for LiIon at 3.7V. As R increases (coolcarts do have a higher resistance as previously measured and reported by Adrenalynn), I (current) decreases. Power, P=VxI, so with V=3.7V, lower I corresponds to lower power consumption with coolcarts. This is also why Premium / Wow cartos are hotter (more current draw = more power = more heat on atty = warmer vapor = more throat hit, etc). I don't care about throat hit, and think the vapor is fine with the coolcarts.