Amazon.com: 6V4.5AH Replacement Battery : Health & Household
6v 4.5ah Battery 6v4.5ah 4ah For Children Electric Toy Car Baby Carrier Ups Backup Desk Light Lead-acid Rechargeable Accumulator - Storage Batteries - AliExpress
6 Volt 4.5 Ah Sealed Lead Acid Rechargeable Battery - 2 Pack | Battery Mart