Continental Replacement Battery for Enduring 6FM18 6-FM-18 12V 18Ah NB Sealed Lead Acid
Mighty Max Battery 6V 12AH Replace 10ah Enduring 3FM10 T2, 3-FM-10 T2 Rechargeable Sealed Lead Acid 6120 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com