YouCute 2PCS 7.4V 700mAh Battery and 1to2 Charger for mjx X600 RC quadcopter drone spare parts Product name :2PCS 7.4V 700mAh Battery and 1to2 Charger For mjx X600 RC Drone Charging 2 batteries at the same time Over charge protection, Short circuit protection. Light in Green when charging,light off when charge complete