Many thanks to breaktru and retird for showing their mods using this 9v batt box and giving me the inspiration to tackle the build. 
I can't believe I got all the circuitry and batt to fit in this teeny tiny box. I was able to squeeze in (just barely lol) a 1200mAh 25C li-poly batt. I had to do some... ummm... creative modding to get everything to fit.
With Lexi and Max I used a piece of polycarbonate that I adhered to the display so that it gave the display a bit of height to fit into the cutout which made it flush with the front of the case, but with this mod I simply seated the display just using the thin black transparent plastic piece that the display comes with so it seats a bit recessed with the front of the case. The cutout I used is the same size as the transparent plastic piece.
I also gave the case a light sanding.
This is the smallest regulated mod I've made... totally teeny tiny
I drilled a 1/16" hole next to the micro-USB charging board to let the light from the LED to come through when charging...
My template for cutting holes...
All parts epoxied in...
All wiring done...
omg... the batt fits!!
And the back cover slides on aok - woohoo!!
Size comparison with Merlin...
Stealth mod, Delsy, Milo, Lexi, Max...
My Bliss with drip tip is taller than the stealth mod...

I can't believe I got all the circuitry and batt to fit in this teeny tiny box. I was able to squeeze in (just barely lol) a 1200mAh 25C li-poly batt. I had to do some... ummm... creative modding to get everything to fit.

With Lexi and Max I used a piece of polycarbonate that I adhered to the display so that it gave the display a bit of height to fit into the cutout which made it flush with the front of the case, but with this mod I simply seated the display just using the thin black transparent plastic piece that the display comes with so it seats a bit recessed with the front of the case. The cutout I used is the same size as the transparent plastic piece.
I also gave the case a light sanding.
This is the smallest regulated mod I've made... totally teeny tiny

I drilled a 1/16" hole next to the micro-USB charging board to let the light from the LED to come through when charging...
My template for cutting holes...
All parts epoxied in...
All wiring done...
omg... the batt fits!!
And the back cover slides on aok - woohoo!!
Size comparison with Merlin...
Stealth mod, Delsy, Milo, Lexi, Max...
My Bliss with drip tip is taller than the stealth mod...
