Mighty Max Battery 12V 22AH SLA Battery Replacement for BB HR22-12 Rechargeable Sealed Lead Acid 12220 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
12V 22AH Battery Replacement for Mighty Max ML22-12 by SigmasTek | eBay
General Storage Battery | Deep Cycle | 12V 22Ah | CB12-22GS