https://dronestuffpro.com/product/3-x5uw-thunderbolt-drone-batteries-3-7v-500mah-lipo-drone-battery-3-pack-for-force1-x5uw-thunderbolt-drone-with-camera-quadcopter/
3 X5UW Thunderbolt Drone Batteries - 3.7v 500mAh LiPo Drone Battery 3 Pack for Force1 X5UW Thunderbolt Drone with Camera Quadcopter