12V 1.3Ah Battery Replacement for Casil CA1223 DSC Alexor System - MightyMaxBattery
2 Packs: 12V 2.3Ah Replaces DSC-BD2312 SYSTEM BACKUP BATTERY FOR ALEXOR SYSTEMS 840140937121 | eBay
DSC Alexor WT4911B Bell Box Siren Battery Non-Rechargeable Pack – XML Battery
Mighty Max Battery 12V 1.3Ah Battery for Casil CA1223 DSC Alexor Syst Rechargeable Sealed Lead Acid 1213 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com