Mighty Max Battery 12 Volt 7ah Battery with F1 (.187") Terminals Rechargeable Sealed Lead Acid 1270 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
Sealed Lead Acid Battery, 12V 7AH, F1 Plug – We-Supply
Amazon.com: 12 Volt 7Ah Battery-Battery [Electronics] : Health & Household