Amazon.com: AJC APC Smart-UPS SC 420VA (SC420) 12V 9Ah UPS Battery - This is an Brand Replacement : Electronics
APC SC420 Battery Replacement
Amazon.com: AJC APC Smart-UPS SC 420VA SC420 12V 7Ah UPS Battery - This is an Brand Replacement : Electronics
Amazon.com: Replacement for APC Smart-UPS SC 420VA SC420 Battery - Replacement UB1280 Universal Sealed Lead Acid Battery (12V, 8Ah, 8000mAh, F1 Terminal, AGM, SLA) - Includes Two F1 to F2 Terminal Adapters :