I just purchase a UBEC to use with my Shulze 18.97kw and Plettenberg MAXXimum. I plan on using 12 cells and maybe 14 cells later. My question is: Does the UBEC get hot under normal use? I'm wanting to put the UBEC in a plastic box with my JR receiver, so I need to know if heat is going to be an issue, before I bother building the box.

Thanks!