YouCute 2pcs 7.4v 1200mah Official Battery and 1to2 Charger for MJX X101 Rc Quadcopter Drone Spare Parts package included:2pcs 7.4v 1200mah batteries and 1to2 Charger Charging 2 batteries at the same time,Over charge protection, Short circuit protection. For MJX X101 Charger LEDs in Green when charging,LEDs off when charge complete Rechargeable up to hundreds of times.