Hi Chris,
Ya I was surprised by the packs, they have been sitting since November, and were only room temp (19-20C). I guess the days of cold packs giving low results is behind us
Here is the eagle tree data of the 21x14, you can see the voltage and amps decline, the rpm declined from approximately 6500 to 6400 during the test.
I also tested the 20.5x14, but the results were very, very similar, so no point in posting them. Its too cold outside to get into doing any serious evaluation on the differences between batteries etc.
Winfried, I will try a test on the 21x15 folder after I have some lunch