4-Pack UpStart Battery Brand UB645 6V 4.5Ah (4500mAh) AGM SLA — Replacement for APC BACK-UPS BK200 with F1 Terminals + 8 F1 to F2 Adapters

Designed as direct replacements for APC BACK-UPS BK200, these UB645 Universal Sealed Lead Acid batteries from UpStart Battery Brand are sold as a 4-pack. Each battery is 6V with a capacity of 4.5Ah (4500mAh) and uses F1 terminals. Chemistry: AGM, SLA. Quantity: 4. Also included: eight F1 to F2 terminal adapters (8 adapters total) for compatibility with equipment that requires F2-style connectors. Ideal for UPS and standby power applications where a safe, maintenance-free sealed lead acid battery is needed.