UPG Absolute General Purpose Deep Cycle AGM Rechargeable Sealed Lead Acid 1290 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
12V 8Ah SLA Replacement Battery for Sunnyway SW1280 - MightyMaxBattery
Amazon.com: Sunnyway SW1280-F2 12V 9Ah Sealed Lead Acid Battery - This is an AJC Brand Replacement : Automotive