UPG UB12100-S 12V 10AH SLA/AGM Rechargeable Battery Pack (4) — Compatible with Opti-UPS 280ES, 420ES

Replacement set: UPG UB12100-S 12V 10AH — pack of 4 sealed lead‑acid (SLA) / AGM batteries. Maintenance‑free and spill‑proof design; rechargeable and can be mounted in any orientation. Built to resist shocks and vibration for reliable performance. Compatible with Opti-UPS 280ES and 420ES. Dimensions: 5.94 inches x 2.56 inches x 4.37 inches. Weight: 6.72 Lbs. Includes 1 Year Warranty.