I love my NicoSticks with the 14500's (900mA) and the battery in them last 6-8 hours depending on how heavy I vape, but wanted even more battery capacity, so... I decided to build another mod as small as I could but utilizing 18650's (2400mA) this time and this is what I came up with and I'll call it the Altoids "Mini".
Using the metal case as the ground eliminated some ground wiring which I found to be nice. I was able to solder the atty, on/off switch and battery negative spring directly to it. I then used epoxy to hold the tactile switch, LED and homemade battery holder in place. It works perfectly for me and it'll be interesting to see just how long each 18650 lasts on a full charge (protected batteries of course). Here's some pics:
Size comparison to full-size Altoid tin:
With battery installed:
Without battery:
Showing on/off switch, tactile switch and LED:
In my hand with LED on:

Using the metal case as the ground eliminated some ground wiring which I found to be nice. I was able to solder the atty, on/off switch and battery negative spring directly to it. I then used epoxy to hold the tactile switch, LED and homemade battery holder in place. It works perfectly for me and it'll be interesting to see just how long each 18650 lasts on a full charge (protected batteries of course). Here's some pics:
Size comparison to full-size Altoid tin:

With battery installed:

Without battery:

Showing on/off switch, tactile switch and LED:

In my hand with LED on:

