I see this around the forum a lot. Its not correct.
Voltage over the battery voltage must come from somewhere, and when looking how long will the battery last, you shouldn't be looking at the current going through the atty, but the current being drained from the battery.
In other words, if you set your device to 5V, and you have a battery giving ~3,7V, the drain from the battery gets higher. There's also some loss in the booster circuit, since nothing is 100% efficient.
And that is where get my info is this forum. I am not an electronics engineer but with that said. I have experienced a situation which two different cartos. One is a smoketech 1.5 single coil that came with my tank. I bought 3 ohm smoketechs which I have inside another tank. I vape at the same wattage. The 1.5 eats the battery life while the 3 ohm last me much longer. I repeated this with similiar results.
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