I saw they have a manual battery for the Npro, I forget the manufacturer but it may be worth the purchase since I loved the Npro atty. Better than my 306 IMO. The Npro battery was always the problem. You had to suck insanely hard, which always lead to a shot of juice in my mouth.
See, now this is what pisses me off.
I agree that the RN4081 atomizer is better for dripping than the 306 atomizer.
And your complaints about the battery are exactly why I went to the 510 model.
But nobody told me that they would come out with a manual battery for the RN4081 model.
So now instead of having the best of both worlds, and needing only one type of battery, I may have to consider buying some of the RN4081 manual batteries. But that means that instead of collecting dust, I will now have to buy more stuff for my RN4081 to awaken it from the ashes.
Then my 306 atomizers would collect dust, and I have a crapload of them.
Or I could just buy that danged KR808D-1 I've been keeping my eye on.
Oh, curse you, ever-improving world that surrounds me!!