MIGHTY MAX BATTERY 12V 18AH SLA Battery Replacement for Enduring 6FM18 6-FM-18 MAX3839790 - The Home Depot
6-FM-18 AGM Lead Acid UPS Electric Motor Generator Battery 12V 18ah - China Generator Battery and Electric Motor Battery
Mighty Max Battery 12V 18AH SLA Battery for Enduring 6FM18, 6-FM-18 Rechargeable Sealed Lead Acid 12180 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com