i guess i'm going to convert my Joyetech dual to AC. i'm thinking a laptop charger and a 10A buck converter adjusted to reduce the 19v to 4.1v or so. drill a hole in the back of the battery case and solder wires to the battery terminals. i think the max current ouwld be limited to the 4.5A of the laptop charger but that seems like enough. i havent seen my amps display go much higher very often. it would just slow the heatup time a wee bit. baking dry tobacco just sucks all the juice outta those batteries. and i was sure to order some heatsinks for under the tank.