Mighty Max Battery 12V 9AH SLA Battery Replacement for Generac YD9-12 Rechargeable Sealed Lead Acid 1290 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
12V 9Ah HR1234W Home Alarm Battery by CSB
12 Volt 9Ah Battery - Walmart.com
UPG 12-Volt 9 Ah F1 Terminal Sealed Lead Acid (SLA) AGM Rechargeable Battery UB1290 - The Home Depot