We have spent over a decade of our lives chasing endurance in the sky. Longer flight times by any means necessary. We've flown every battery under the sun and run every motor-prop combo you can think of. We have it figured out. It's quality lithium-ion battery packs, built with highly conductive materials, minimal resistance, and attention to detail when welding cells. We were tired of paying a premium for packs that caught on fire or burned up the nickel strip when put to duty-use, so we made our own. Through collaboration with our partner network of suppliers, manufacturers, and logistics professionals, we have managed to create the finest long range packs we have ever flown, out of non-chinese cells, superior materials, masterful craftsmanship, at scale, and all for prices consistent with far inferior non-compliant batteries. Voltage sag the lowest we've ever seen it. Flight times increased by average 15%. We'd tell you more, but you just have to fly one to see it for yourself. They're that good, we guarantee it.