If you want extremely low fiddle factor, are able to make an eliquid your all-day-vape (ADV), a bottom feeder 18650 box is a zero-fiddle package.
I love my VV units a lot, but have been doing some things where I simply can't be bothered to even refill a tank a couple times during a day (I vape 6 ml/day). For those cases I'm using a Red Sky Mods Mark 9, a beautiful wooden bottom feeder, with 6ml eliquid bottle inside it, an AW 18650 2600 mAh protected ICR battery (I rotate it with an AW 3100 mAh on alternate days, but the 2600 actually has better specs for the voltage/amp region I use), and a Cisco 306 1.5 ohm atomizer.
All I do is squeeze the bottle a bit if the atty is starting to run dry, press the fire button, all day -- zero other work involved. At night, refill the bottle, swap battery (I use an XTAR WP2 II charger, set to 1A max current, for these big 18650 batteries -- a very good charger, excellent reviews, less than half the price of a Pila). Plenty of warmth/vapor, and the Cisco 306 is still fine after a month of heavy use (and no maintenance -- I just leave it attached to the mod, keep vaping on it).
These big AW batteries have plenty of capacity, zero issue with the amperage required for 1.5 ohms, and I like the protection circuit to cover me if there's ever a short. No electronics -- just the battery, switch, connector, bottle, nicely packaged in the wood box.