Tattu Lipo battery is the best and most professional FPV racing Lipo battery, Gens Ace is the sister brand for Tattu, both produced by Grepow battery company. Tattu 850mAh 3S 75C lipo battery is a light weight and high discharge FPV racing lipo battery. It is suitable for FPV Racing Quadcopters, specially designed for your 150-180 size quadcopters.