As one of the geeks who is on Candle Power Forums, let me say congratulations. That is quite a light. I own several Fenix lights myself.
You'll love that Pila charger. I have one, and also use 3100mAh 18650s, but from AW. I use them in a home-bored Surefire 6P, with a Nailbender 450-lumen 2.8A 3-mode 90+CRI XML drop-in. It has amazing tint and color rendering, especially outside with the greens around here in Oregon. It puts most other LEDs to shame. Once you go high-end rechargeable incandescent (Lumens Factory) or high-CRI LED (Malkoff and Nailbender), you'll never go back to bluish white LEDs.
Now you just need a good P60 platform, and the drop-in options with rechargeable 18650s are endless...and addicting. "Guilt-free lumens" from using rechargeables instead of expensive CR123 primaries, makes you find reasons to use your light.