3.7V 1800mAh E88 PRO UAV Lipo battery for UAV RC quadcopter charging time of 60 minutes, flight time of 8-9 minutes
https://www.vogueparade.com/shopping/EN/200001385/1/1005002671613611/37v-1800mah-e88-pro-uav-lipo-battery-for-uav-rc-quadcopter-charging-time-of-60-minutes-flight-time-of-8-9-minutes//