Tera Charge Kit - 3 * Rechargeable Battery 600 mAh 3.7 V lithium-ion battery + charger for Parrot minidrones Rolling Spider / Jumping Sumo (Electronics)
After several weeks of use charge and discharge batteries, unlike some reviews I did not notice any swelling (deformation) malfunctioning batteries. The discharge with the use of the Parrot drone is the same as the original one all depends on its use