12 Volt 18Ah Lithium Deep Cycle Battery-Tycorun Batteries
Mighty Max Battery 12V 18AH Replaces Enduring CD17-12, CB-17-12 Rechargeable Sealed Lead Acid 12180 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
Amazon.com: 12V 18Ah Sealed Lead Acid Scooter Battery D5745 40648 UB12180 WP18-12 6FM18-2 Pack : Health & Household
Mighty Max 12V 18AH Sealed Lead Acid Battery Replacement For FM12180" - Walmart.com