Amazon.com: 12 Volt 7 Amp Hour Sealed Lead Acid Battery (12v7ah, 12v 7ah, 12 V 7 Ah) Replacement : Health & Household
Battery 12V 7Ah NiCd B310004 for LITHONIA ELB1208
Mighty Max Battery 12 Volt 7 Amp Hour Alarm Battery Rechargeable Sealed Lead Acid 1270 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com