Factory-equipped with the compatible connector to fit popular Blade, E-flite, HobbyZone, ParkZone and other ultra-micro airplane and helicopter models and chargers for plug and play use. These Ultra Micro LiPo batteries offer more capacity than "stock" batteries for more duration per charge and deliver up to 6-times more cycle life and up to 40% more power at less weight than previous generation batteries. Best of all they can be ultra-fast charged at rates up to 5C with no loss in cycle life or power delivery so you can spend less time charging and more time flying.