Wwman 2pcs 7.4v 1500mah Official Battery and 1to3 Charger for Udi007 Udi002 Rc boat Spare Parts Charger DescriptionInput:DC5.0V-0.5-2.7A;Output:DC3.7V-450MA/SET. Package included:2pcs 7.4v 1500mah battery + 1to3Charger Charging 3 batteries at the same time Over charge protection, Short circuit protection. For Udi007 UDI002 RC boat,Official batteries