Amazon.com: ExpertPower 12v 1.3Ah SLA Rechargeable Battery with F1 Terminals || EXP1213 (Not a Replacement for WP3_12) : Health & Household
12V 1.3AH Sealed Lead Acid Battery with F1/T1 Connector for Multiple Uses 840140929201 | eBay
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
12V 1.3Ah Battery Replacement for Clockmate PSLA1201.2 - MightyMaxBattery