UPG General Purpose Deep Cycle AGM Rechargeable Sealed Lead Acid 645 Alarm System Batteries in the Device Replacement Batteries department at Lowes.com
MIGHTY MAX BATTERY 6-Volt 4.5 Ah SLA (Sealed Lead Acid) AGM Type Replacement Battery for Alarm/Security Systems (15-Pack) ML4-6MP15 - The Home Depot
UPG 6-Volt 4.5 Ah Sealed Lead Acid (SLA) AGM Rechargeable Battery UB645 - The Home Depot
2 X 6V 6 Volt 5Ah Rechargeable Sealed Lead Acid Battery Replaces 4.5Ah 4Ah | eBay