I also have the overheating problem with my Galaxy Tab Pro! I am addicted to Magic Jigsaw Puzzles which overheats my battery pretty quickly!! I actually use cold packs to keep it cooled down. I have to change them quite often which is annoying but not as bad as having to quit my puzzle!!! They are actually just Nexcare Reuseable Cold Packs. I set them under my tablet where the battery is located (the area that gets hot). I do have to change them quite often (because I'm playing for hours) but I don't freeze or keep them in the fridge, just on a marble slab as I don't want condensation on my tablet. I will be looking for some other device that might work better when I can stop doing the puzzles long enough!!!