APC Back UPS (BK350); 350 VA, 210 W, 120 V; 6 Outlets; Shutdown Software; Phone Surge Protection; 3-Year & $100K Warranty - Micro Center
Amazon.com: Replacement Battery for BACK-UPS CS 350 BK350 - UB1290 Universal Sealed Lead Acid Battery (12V, 9Ah, 9000mAh, F1 Terminal, AGM, SLA) - Includes TWO F1 to F2 Terminal Adapters - CP1500AVRLCD :
APC Back-UPS CS 350 New Compatible Replacement Battery by UPSBatteryCenter : Health & Household - Amazon.com