i guess it's all relative. a couple degrees above ambient isn't "getting the battery warm" in my world.

the point of the thread is high charge and discharge rates to warm the pack to the point it provides a performance improvement. a couple degrees above ambient is negligible. i know from doing it that the punch i get from a proper cycle (35a discharge/40a charge) produces IR's in the 1.0 ohm range per cell. when i'm not racing and just practicing and don't cycle, the IR's are usually about twice that (charging at usually 20a) and the difference is noticeable.