right now, you do have great options to pause downloading - when charging or not, via cell or wifi, etc, etc.
My thing is I have unlimited data on my cell plan, so I download when charging or not. I also have it set to stop when I get to 500mb left on my microSD card.
BUT, I'm finding my Blackberry Storm gets rather warm when downloading 200+Mb of data - then it won't take a charge until it cools down again. Any way you could build in some extra protection into podtrapper? having it stop downloading at a "30% battery" remaining level - or user adjustable amount? That would probably save that problem for me.
Thanks!