Tripp Lite ECO750UPS 12V 9Ah UPS Replacement Battery: BatteryClerk.com
Mighty Max Battery 12V 9Ah UPS Battery Replacement for APC BE550G Rechargeable Sealed Lead Acid 1290 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
bXterra BM1500AVRLCD 12V 9Ah UPS Battery - This Is an AJC Brand Replacement - Walmart.com
Amazon.com: POWERSTAR Battery 12V 9Ah G1000U UPS Battery 3 Year Warranty : Health & Household