Energup 2 Pack Euro Pro Shark 4.8V Vacuum Replacement Battery for Shark V1700Z V1930 Replaces X1725QN Battery Type: Ni-MH/ Voltage: 4.8V / Capacity: 3000mAh Product Type: rechargeable Replacement Battery (Brand New) 100% Compatible with original manufacturer equipments and chargers Safeguard features against incorrect voltage, short circuit, internal overheating Please contact us with any questions or concerns - we are here to help!