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Amazon.com: POWERSTAR 12V 2.3Ah Casil CA1223 DSC Alexor System Replacement Sealed Battery : Health & Household
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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