Power-Core 100575 12V 1.3Ah Sealed Lead Acid Battery - This Is an AJC Brand Replacement - Walmart.com
Bright Way Group BW 1213 Sealed Lead Acid Battery F1 Terminals 12V 1.3AH
Amazon.com: Mighty Max Battery ML1.3-12 - 12 Volt 1.3 AH, F1 Terminal, Rechargeable SLA AGM Battery
Mighty Max Battery 12V 1.3Ah, F1 Terminal, SLA AGM Battery Rechargeable Sealed Lead Acid 1213 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com