4-Pack UpStart UB645 Universal Sealed Lead Acid Battery (6V, 4.5Ah / 4500mAh) AGM SLA — Compatible with Criticare Systems 506 — F1 Terminal + 8 F1-to-F2 Adapters

Four replacement UB645 batteries from UpStart, sized to fit Criticare Systems 506 units. Each sealed lead acid (SLA) battery is 6V with a capacity of 4.5Ah (4500mAh) and comes equipped with F1 terminals. Built with AGM construction, these batteries are supplied as a 4x pack and include eight F1 to F2 terminal adapters to ensure compatibility with devices requiring F2-style connections. Key details: - Quantity: 4 batteries - Model: UB645 (replacement for Criticare Systems 506) - Brand: UpStart - Voltage: 6V - Capacity: 4.5Ah / 4500mAh - Terminal type: F1 - Chemistry: AGM, Sealed Lead Acid (SLA) - Accessories: 8 F1 to F2 terminal adapters included This set provides direct-fit replacements for equipment that specifies the Criticare Systems 506 / UB645 battery and supplies the adapters needed for alternate terminal configurations.