Power Sonic PS-640 F1 Battery - 6 Volt 4.5 Amp hour – RocketDistributing.com
6v 4.5Ah Rechargeable Sealed Lead Acid (Rechargeable SLA) Battery with wire leads and A800ec Connector| BG-645F1WL - $15.32
MIGHTY MAX BATTERY 6 -Volt 4.5 Ah Rechargeable F1 Terminal Sealed Lead Acid (SLA) Battery ML4-6 - The Home Depot
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
Amazon.com: ExpertPower 6 Volt 4.5 Amp Rechargeable Battery (EXP645) 2 Pack : Health & Household