6V 5.0AH Storage Batteries 4AH 5AH Lead Acid Rechargeable batteries for Children Electric Car Electronic Said Emergency Lights|Storage Batteries| - AliExpress
Mighty Max Battery 6V 4.5AH SLA Multipurpose Rechargeable Battery Rechargeable Sealed Lead Acid 645 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com