Someone asked how I have my ESC wired and how I have my battery packs set up, so here are a couple of pictures.
I made 12S stick packs using 4" clear heat shrink tubing. I cut a slit for the connectors of the second pack to come out through.
ESC and BEC wiring. The EC3 connector goes to the BEC, which is underneath the ESC tray. This way, I can plug in the back battery pack without powering up anything, and then slide it the rest of the way into the battery tray and strap it down before plugging in the EC3 connector and powering up the electronics. After the FBL controller is booted up, then I plug in the front pack and power up the ESC. I like this wiring configuration, too, because I can power up the FBL controller and servos for setup without powering the ESC.
Hope that helps.