Gens Ace and Tattu 4S 15.2V HV LiPo batteries for FPV quads and 1/8 and 1/10 scale competition RC. The Gens Ace Redline hardcase series suits touring cars, trucks, buggies, and truggies. Tattu long packs are made for 3 to 4 inch FPV drones, including whoops, cinewhoops, and toothpicks.