I thought it was important to mention this although I don't know if it is just my unit. Just an FYI, one of the vendors has claimed that the wiring in the Indulgence mod does not support IMR High Drain batteries. This confused the hell out of me but the claim is that they come off the charger considerably stronger than a standard protected battery and that it will melt the wiring. Honestly I thought that this was a bunch of BS and surely if it was an issue it was from stacking 16340s so the other day I elected to stuff one of my 2000 mah AW IMR batteries into it. I put a 1.5 carto on it fired it up.... no response at all and in fact the button stuck like it had never done. I hit the button again, and it released. I made two more attempts, tightening the battery cap, tightening the carto and still got the odd sticking button as well had to hit it each time a second depress to get the button to release. I then took off the cap and accidentally touched the spring on the cap and it singed my skin. The spring was discolored like heated metal. So I let it cool down, stuffed the lipo protected battery that came with the kit back in and it fired perfectly. In short please be careful with this mod, although it has 3 vent holes in the newer model it still lacks any kind of internal safeties with the exception of the collapsable spring.