This ship is easy and fun to fly. The only downer at the moment is that after a few crashes the battery is thrown out of its holder and the ship loses balance and doesn't fly properly. In this case, open the egg by removing the two screws on the bottom and pressing on the 4 tabs near the center circle, two on each side. Once opened, carefully remove the battery without disconnecting it from the ship and apply double-sided tape. , or roll back the tape to reveal the sticky side. Just make it big enough to cover the side of the battery. Then carefully insert the battery into the desired slot and push to lock. Assemble the vehicle, replace the screws and fit the 4 tabs into the square holes. Did.