Using the Mr RCTECH method I just tested my Thunder Power Lipo's using 3 50W 12V halogen bulbs (around 88W on my 2s bulbs).
My new 6000 65C's measure 15mΩ, the brand new pack 16mΩ
My 18 month old 5300 65C's are around 24mΩ
However, my 3.5yr old 5000 40C Lipo's are still 17mΩ!!!
This is the reason I won't use anything but Thunder Power lipo's
I understand for flight etc those low readings won't make a difference, but in 1/10 TC's it really can make the difference.