I wouldn't call it a built in place to mount a fan, but adapting a fan isn't too hard.



I got the 12v fan from radio shack and run it off of the 4S pack. I use a small 12v regulator, also from radio shack, when I run more than 4S. I just drilled and tapped the heatsink for 3mm screws. There's more than enough meat there for the threads.