The dicodes dani mini is a single 18650 right? I get it for lower wattage vapors, but it wouldn't cut it for me. I find it funny that people tell me "RIP battery" because I use my Billetbox with a single 18650 at 40-45W yet no one says anything about other single 18650 mods like the Therion or Dani Mini -- mods where I would be running 55-65W for a single coil build anyways.
I have the 3.0. I don't have a 2.0 or 1.0 to compare it to, but I definitely wanted only the 3.0. It has a button inside to turn it off and the internals have a new sled which clean it up quite a bit:
V3
Older version
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I also believe the V3 has a higher amperage limit (30A/~180W). I use mine for vaping in the 70-90Wish most of the time, so I need that.
I also definitely wanted powdercoat. It was incredibly hard to find. I found a limited edition by accident because I couldn't find a regular powdercoat. The reason I didn't want anodized is because of scratches. The powdercoat finish is similar to what you would get on a car, I think.