Tera Four Parallel Socket Multi Rapid Battery Charger for Upgrade Parrot Mini Drone Jumping Sumo or Rolling Spider Battery Only battery charger. Battery is not included Li-po battery charger with circuit protective IC in each charge socket. Over charge protection, avoid high current damage your battery? It can charge1, 2 ,3 or4 batteries at a time, which saves your charging time a lot? Charging method: connect charging board with original USB charging cable of Rolling Spider or Jumping Sumo, and equipped with power adapter of cellphone or pad (2A) Suitable for Parrot Mini Drone Rolling Spider? or Upgrade Parrot Mini Drone Jumping Sumo