5pcs 3.7V 380mAh Upgraded Li-Po Battery for JXD 388 RC Quadcopter (Silver) 3.7V 380mAh original lithium battery for RC quadcopter It is a great battery set to power your JXD 388 RC quadcopter Upgraded version battery allows you to enjoy longer flight and more fun Dimensions: (1.46 x 0.79 x 0.28)" / (3.7 x 2 x 0.7)cm (L x W x H) Package Includes: 5 x Battery