Mine get just warm enough after running so that you know they have been used. Warm for a lipo is 110F, serious trouble is 140F.

You want you setups "overbatteried" - that way you get a cool batt after running, long batt life and happy electronics. It used to be you just couldn't afford to do that cause the higher C rated ones were so expensive, so people had to run on the edge. Thats changed, you can afford to get what your setup needs. I bought 2 3S 25C 5000mah NeuEnergy pacs last nite for $130 shipped, they were $58 each, I about fell out of my chair, 6 months ago they were $170 each!

Def give Orions a look, they are top rated cells (Kokam), btw those are honestly rated! You can count on them delievering what they say they will. I didn't catch on that the 3400s you were talking about were Orions. I see that now....