X11 Spare Part 2pcs 3.7v 250mAh Batteries with USB Charging Cable for Syma X11c Rc Quadcopter Replacement batteries,perfectly compatible with Syma X11c Rc Quadcopter. 3.7v 250mAh lithium battery,high quality and well performance. Durable and pratical battery, rechargeable with long life using. Additional charging USB cable,more convenient for you to charge multiple batteries. Package include: 2pcs X11C batteries+1pcs USB cable