5-Pack Compatible Dual Lite 3921 / UB645 Replacement Battery - UpStart 6V 4.5Ah (4500mAh) AGM SLA, F1 Terminal — Includes 10 F1 to F2 Adapters

UpStart Battery brand replacement set: five 6V sealed lead acid batteries compatible with Dual Lite 3921 and designed as UB645 Universal replacements. Each battery is 4.5Ah (4500mAh) capacity, AGM construction (SLA), and fitted with F1 terminals. The pack also includes 10 F1 to F2 terminal adapters for easy installation. Key details: Quantity: 5; Voltage: 6V; Capacity: 4.5Ah (4500mAh); Terminal: F1; Chemistry: AGM / SLA; Compatible models: Dual Lite 3921, UB645 Universal Sealed Lead Acid Battery; Accessories included: 10 F1 to F2 terminal adapters.