Sorry Twoturn but I don't have any Eagle Tree data on mine.
What I can tell you is they come down cooler than any pack I have ever ran including many Thunder Power Extreme V2's I had last year. Which by the way all failed before their 40th cycle.
I have noted that under a load Rhino's seem to hold voltage a lot better than the True RC 15C packs that I recently sold off.
At static loads of 75 to 80 amps the Trues would drop to about 35 volts and the Rhino's drop to about 37 on fresh packs.
Right now I'm testing 2 Zippy 15C setups. They have the weight I can live with. So far very impressive! I have friends who also seem to like the Zippy 15C packs. They are selling at around $80+ a pack which is a steal in my opinion. I also still think the TrueRC 10C packs work very well but the Rhino's and Zippy's are better under a load.
What remains to be seen is how long they last. The TrueRC 10C's are lasting very well. I have 1 pack that has 100 flights on it and it's still good enough for competition. Mike