Amazon.com: 6V 4.5Ah UPS Battery for Vision CP645-15 Pack : Health & Household
Mighty Max Battery 6V 4.5Ah UPS Battery for Vision CP645 Rechargeable Sealed Lead Acid 645 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
Vision 6V 4.5AH Sealed Lead Acid Battery
Amazon.com: Vision CP645 6v 4.5ah Replacement Battery Set - 4 Pack : Health & Household