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
MIGHTY MAX BATTERY ML4-6 - 6V 4.5AH Vision CP645 Replacement Battery - 10 Pack MAX3427101 - The Home Depot
Amazon.com: 6V 4.5Ah UPS Battery for Vision CP645-10 Pack : Health & Household
Vision CP645 6V 4.5Ah Sealed Lead Acid Replacement Battery: BatteryClerk.com