China Maintenance Free Rechargeable 12V18ah High Rate SLA Battery - China UPS Battery, Lead Acid Battery
APC #43 UPS Replacement Battery Cartridge – 480 VAh, Maintenance Free, Sealed Lead Acid Battery w/Suspended Electrolyte, Leakproof, Hot Swappable, Metallic Enclosure (Open Box) - RBC43-OB at TigerDirect.com
UPG General Purpose Deep Cycle AGM Rechargeable Sealed Lead Acid 12180 Alarm System Batteries in the Device Replacement Batteries department at Lowes.com
PowerStar PS12-7-31 Ut 1270 12V 7Ah Nonspillable Rechargeable Sealed Lead Acid Battery - Walmart.com
APC Replacement Battery Cartridge #4 - Maintenance-free sealed Lead-Acid, 12 Volts, 11 AH, Battery with suspended electrolyte, Leakproof, Black - RBC4 at TigerDirect.com
American Power Conversion (APC) - APCRBC133 - Replacement Battery Cartridge #133, Lead Acid, 432Ah, SMT, RBC Series - Allied Electronics & Automation