Lead Acid 6-Volt 4.5 Ah Black Replacement Battery B LA 6V 4.5A
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
MIGHTY MAX BATTERY 6 -Volt 4.5 Ah Rechargeable F1 Terminal Sealed Lead Acid (SLA) Battery ML4-6
Panasonic 6v 4.5Ah Sealed Lead Acid Battery with F1 Terminals PL-0145 Lead Acid (NP/LCR/PS)