Got a chance last night and this morning to try out my items.
Thunder ac680 charger is AWESOME. Seriously, this thing is small, easy to use, and quiet. Balanced both packs perfectly, didn't even get warm to the touch.
Battery packs I can't say too much about, I haven't actually ran them in my truck yet as it's been raining and I'm "supposed" to be working right now. I can tell you they never warmed up when charging and like I said above, balanced well.
Lipo bag... it's a bag, and it holds lipos. I didn't attempt to light it on fire to see if it does it's job, but it looks and feels like it will.
4mm Bullets, pretty good, can't say I can see a difference between these cheap Chinese ones and the much more expensive ones they sell at the track.
Overall I'm quite pleased with my Hobbypartz order, would order again from them and probably will. Especially if these battery packs end up being as good as everyone says they are.