Power your electronic components or devices with this 3.7V 380mAH rechargeable Lithium Polymer Battery. Save money by purchasing separate batteries, when you can purchase one rechargeable Lithium battery and, recharge, and reuse again. Besides, who wants to manage multiple bulky batteries? I know I don't. Get yours today! Estimated recharge time is 50 min. This battery is compatible with our Wonder Chopper Sky Patroller LED Drone Quadcopter. Drone not included.