Most of us are looking for something that will give us a couple of days on a set of batteries. I vape at 10W and still get only 6 or 8 hours, maybe 10 hours out of a dual or triple battery mod, including the RX200S. I can get almost that from a single battery istick Pico, so the bigger and more feature rich the mod, the more power is obviously consumed by the mod's electronics.