This micro build with the F20 T-Motors has so much power to weight ratio tuning has been a real chore. Once in the air it does not take long to realize this micro weighs only 156 grams. I use Tattu 14.8V 4S 850mAh 75C LiPo Batteries which seem to be a sweet spot for this build. I have to truly admit this micro is a blast to fly. The low pitch props help tame it a bit in flight. The build quality on this frame from ImpulseRC is astounding. I always wondered what a lightweight powerful build was like, now I know. If you like something fast, aggressive, lightweight and nimble this build will bring a big smile with aggressive maneuvers.