GoolRC Super Fly 5-port Fast Charger Sets X5A-B03 with 3.7V 730mAh Lipo Battery and JST Charging Cable for RC Helicopter / Quadcopter WLtoys V636 V686 V686G High quality and durable perfermace. Portable and easy to carry. X5 charger can charge five battery once time. Safety for the using time of battery. Can be applied for many types of RC vehicle.