Key Features The best choice for maximum power and cycle life delivery for high-power airplane, EDF, extreme 3D helicopters and other applications Proudly assembled in the USA using premium quality cells strictly matched by IR, capacity and voltage and backed by a full 2-year warranty Available in capacities from 325mAh to 6600mAh and configurations from 1S to 10S at prices less than G4 Pro Power 45C series batteries Overview Thunder Power RC is proud to offer the world’s most advanced, most powerful and longest lasting batteries yet. When high-power EDF, 3D helicopter or other applications demand nothing but the best, G6 Pro Power 65C batteries deliver up to 60% more power than previous generation batteries and up to 600+ cycles. Plus their ultra-low IR makes them capable of ultra-fast charge rates up to a technology-leading 12C for charge times of 5 minutes or less