Yuasa NP12-6 NP12-6 VRLA 6 V 12 Ah AGM (W x H x D) 151 x 98 x 50 mm 6.35 mm blade terminal Maintenance-free, VDS certifi | Conrad.com
Mighty Max Battery 12V 12A F2 Replaces Yuasa NP12-12 NP 12-12.25T Rechargeable Sealed Lead Acid 12120 Backup Power Batteries in the Device Replacement Batteries department at Lowes.com
MIGHTY MAX BATTERY 6V 12AH F2 SLA Replacement Battery for NP10-6 NP12-6 PE6V10 PE6V12 MAX3532569 - The Home Depot
NP12-12T - Enersys - Rechargeable Battery, 12 V, Lead Acid
Duramp NP12-6 6V 12Ah F1 Replacement Battery | eBay
Genesis NP12-6 Battery by Enersys, 6V/12AH Sealed Lead Acid – BBM Battery