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
Amazon.com: Eseegoo 6V 4.5AH Rechargeable Sealed Lead Acid (SLA) Battery Replace 6 Volt 4AH 5AH for Exit Sign, Emergency Light, Lantern, Kids Ride On Car,Game Deer Feeder : Health & Household
Long Way 6V 4.5ah Battery 3FM4.5 (6V4.5Ah/20Hr) LW6V45A - KidsWheels
Sigmas Tek Battery SP6-4.5(6V4.5AH/T1) Sealed Lead Acid (cosmetic damage) | eBay