Mighty Max Battery ML18-12- 12 VOLT 18 AH SLA BATTERY- PACK OF 4 Rechargeable Sealed Lead Acid 12180 Backup Power Batteries (4-Pack) in the Device Replacement Batteries department at Lowes.com
Bright Way Group BW 12180 NB Sealed Lead Acid Battery 12V 18AH
MIGHTY MAX BATTERY 12V 18AH SLA Internal Thread Battery for Generac 7500 EXL Generator MAX3528021 - The Home Depot
IP POWER IP12180-B 12V 18Ah, Sealed Lead Acid Rechargeable Battery – Batteries 4 Stores