Qsmily&reg; 2PCS 3.7V 180mAh Li-po Battery Spare Parts for Syma S107G S109G S111G / MJX X900 X901 RC Quadcopter Original factory parts, 100% new. Durable, practical and not easy to damage. High charging efficiency, long service life. Capacity: 3.7V 180mAh. Suit for: Syma S107G S109G S111G MJX X900 X901 rc quadcopter.