Mighty Max Battery 6volt 7.2ah Battery Replacement for WKA6-7.2F Rechargeable Sealed Lead Acid 670 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
Amazon.com: UPSBatteryCenter® 6V 7.2Ah F1 Battery Fits Wonderlanes Fire Engine 6V Battery Powered Ride-On : Health & Household
6V 7.2AH Sealed Lead Acid (SLA) Battery for UB670 DJW6-7.2 652007 MX06065 NP76 - 2 Pack
MIGHTY MAX BATTERY 6V 7.2Ah Replacement Battery for SLA0925 NP7-6 PWRBC67 KB670 SLA Battery - 12 Pack MAX3982700 - The Home Depot