Oh, yeah must be the mod itself, I didn't seem to get that error with the G3D last night, at first I accidentally was running in tubo power mode or something else whatever it was called, where it was cruising wattage (also set for 15min) with a set temp, at first it was only at 330F and I realized it topped out (watts started lowering automatically when it hit temp) so I turned it off and moved it up to 420 with some great success through my olive wood bowl, extraction a bit quick so turned the watts back down, but accidentally got stuck in another mode, finally switching modes then I figured out I needed the plain power mode where it turns cruise into surf and has no temp control hindrance... So that worked great at 14.5 watts once warmed up already, you can turn it off and on for hits, a little heat up, but fairly on demand for a vape like this I'd say! That's pretty cool that you were able to use it to run a Halo as well, I had no idea something like that might be possible with the 510 connector too! Battery life actually does seem pretty efficient, though I will have to test more precisely and report back...