APC CS 350 Battery Back Up Power Supply No Battery
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 :
Beiter DC Power 12V 8Ah APC Back-UPS CS 350, BK350, BK350i, BK350Ei UPS Replacement Battery - 2 Pack Beiter DC Power
APC Back-UPS CS 350VA, 120V, 6 NEMA outlets (4 surge) - BK350 | APC USA