MIGHTY MAX BATTERY ML4-6 - 6V 4.5AH Vision CP645 Replacement Battery - 2 Pack MAX3426525 - The Home Depot
CP645 – YHI Power
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