Draganflyer Extreme Battery System - Increased Capacity & High Power. Welcome to the cutting edge of battery technology. With the Drganflyer Extreme Battery System you can fly longer, climb faster, and recharge in just 25 minutes. The battery included with this package is the Thunder Power 3s2100mah. It functions just like the standard Draganflyer 3s 1320mah battery. But the differences are important. The 2100mah battery has more capacity (longer flight times), holds higher voltage under load (faster climbs), and has a balance connector to ensure long battery life. To recharge the 2100mah battery you will be using an exceptionally powerful and safe charger, the Thunder Power 1010C. The power and safety features allow faster charge rates than normal, meaning less waiting and more flying. The Thunder Power 205V balancer ensures long battery life, optimal battery performance, and enables the safety features - don't charge without it! In every way, the Extreme Battery System is the best for your Draganflyer. Additionally, we've made it plug-and-play easy.