I saw this picture of the internal heating elements of the mighty. I hadn't seen it before so I wanted to share!
Pretty neat: you can see the thermocouple in the bottom left of the heating chamber to track temp, the air path spirals up the element picking up convective heat, and you can see the hottest spot is in contact with the herb bowl which gives it the conductive heating. Superbly designed device!
Wow, that's an impressive lifetime! What batteries do they take? I was guessing maybe Molicel 18650's? When I saw the picture I was the first thing I was thinking about.
I used Panasonic NCR18650GA 3500 mAh 10A batteries with tabs. So far they've been great.