Amazon.com: UB645 ELB-0604 Battery ELB0604 6V4.5AH 6V 4.5AH SLA Sealed Lead Acid Battery for Exit Sign Emergency Light SLA0905 AH 4.0 AMP Hour 120255 : Health & Household
Enersys Genesis NP4.5-6 Battery - 6V 4.5Ah
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
Gel battery WM Motor OT4.5-6 6V 4.5Ah 70x48x106mm - www.motor-x.com