Compact and lightweight, easy to carry. -Large capacity allows you to play your toys for a long time. -Great battery replacement for your transmitter of toys. -Flexible and stable, durable performance. -Easy to install and release, very simple to use. -High quality and safe to use,safe in normal use,Easy operation, battery can be charged anytime without the need to fully discharge. -Function: As a spare battery for a your RC Drone and can extend the playing time. Specifications: -Battery Voltage:3.7V. -Battery capacity: 1800mAh. -Note:Please make sure yout RC Drone Battery are the same Voltage and same connector with the picture shows before you buy it. -Plug Type: JST Connector. -Battery Size: 57*29*10mm ( L x W x H ). -Weight:28.14g. Note: 1.Please turn off the power switch and unplu.