Amazon.com: 12V 8Ah Fire Alarm Control Panel Battery for Radionics D126 : Health & Household
IM-1272F1 - UltraTech Sealed Lead Acid Alarm Battery (12 Volt, 7.0 Amp Hour)
Simplex (2081-9287) 12v 26ah Fire Alarm Battery Replacement, 112-134
NPP 12V 4 Ah 12Volt Sealed Lead Acid Rechargeable Security alarm Battery With F1 | eBay
Mighty Max Battery 12V 4.5Ah Home Alarm Security System SLA Battery Rechargeable Sealed Lead Acid 1250 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
12 Volt 18 ah Fire Alarm Battery replaces 12v 18ah ELK-12180