Duracell SLA12-9F2 Battery (.250") 12V 9Ah Ultra AGM Sealed Lead
Mighty Max Battery 12V 35AH INT Replacement for Ultra DURA12-35C Rechargeable Sealed Lead Acid 12350 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
Amazon.com: AJC Battery Compatible with Duracell Ultra 12V 14Ah 12V 14Ah Sealed Lead Acid Battery : Health & Household