4 Pack NEW 6V 4.5Ah SLA Replacement Battery for PS-640, PS640F1, UB645 | eBay
Amazon.com: Universal Power Group UPG UB645 6V 4.5AH SLA Sealed Lead Acid Battery - also Compatible with Kid Trax Disney Ride on Toy KT1123TR : Automotive
Interstate SEC0905 SAL 6V 4.5Ah Battery with F1 Terminals