voltage vs efficiency??

[SpEEdyBL]

My Tekin 1900 on 6s, for instance, runs a good 10-15 degrees cooler than my 2650 on 4s. It also seems a lot more powerful, almost like the 2650 on 5s.

Btw, for 6s i use a 35C 3300mAh Hyperion G3 pack (529g) and for 4s i use a 25C 5000 mAh Zippy pack (497g).