Amazon.com: Replacement for Kung Long WP4.5-6 Battery - Compatible UB645 Universal Sealed Lead Acid Battery (6V 4.5Ah 4500mAh F1 Terminal AGM SLA) - Includes TWO F1 to F2 Terminal Adapters : Health
6V 4.5Ah UPS Battery for China Storage Battery 1091 - 15 Pack - Walmart.com