Yeah..I've noticed that as well.
From what I was told (based on my user settings @ 3.8v)
is that the 20w set @ 3.8v is actually firing at 4.2v.
I found this to be pretty accurate.
When I set the 50w between 4.2v-4.5v I get about the same hit and vapor production as I do with my 20w set at 3.8v.
With that said...
the juice consumption (imo) should be pretty even between the two batteries, as long as the rest of the set up is the same.
But what I'm finding is that the 50w is sucking up at least half again as much juice if not double the juice at those settings. (20w @ 3.8v vs 50w @ 4.2v)
Something doesn't seem right about that to me, and makes me wonder if I have a faulty battery.
That's why I was asking if anyone else has noticed this.
I understand using the 50w in the same manner as the 20w (same coils and tanks) doesn't make much sense to alot of people, but my main reasoning for the purchase (right now) was for extra battery life.
Having a decent powered sub-ohm mod to expand upon in the near future was **the bonus**
**