Mighty Max Battery ML1.3-6- 6V 1.3 AH, F1 Terminal Rechargeable Sealed Lead Acid 613 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
12 Volt 12 ah UB12120 Sealed AGM UPS Backup Battery replaces Union Battery MX-12120, MX12120
6 Volt 12 ah UB6120 Sealed AGM UPS Backup Battery replaces Union Battery MX-06120 F2, MX06120 F2