Amazon.com: 12V 12Ah Battery, 12V Lithium Battery, Deep Cycle 12V Rechargeable LiFePO4 Battery, Built-in BMS, Offer 4000 Cycles Life, for Power Wheels, Small UPS, Scooter, Fish Finder, and Ride On Toys :
Amstron 12V 12Ah Sealed Lead Acid Battery w/ F2 Terminal
Mighty Max Battery 12V 12Ah F2 SEALED LEAD ACID DEEP-CYCLE Rechargeable Sealed Lead Acid 12120 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
Simplex (2081-9288) 12v 12ah Fire Alarm Battery Replacement, 112-113