I am very pleased. Due to delivery problems, I got the battery a little later. But was informed directly by phone after my order. Customer TOP !!! Due to the larger battery, the flight time of 7 extended to 9.5 minutes. A significant extension. Have the Mikanixx X006 Quadrocopter. Had only concerns about the battery bay. The battery is of course a bit larger and heavier. But fits snugly. The flight characteristics do not change. All in all I am very satisfied and would recommend the battery.