LYNXRCHKIT-SC - Honeywell Control Panel Backup Alarm Battery (for LYNX-Series Control Panels)
How to replace your Honeywell Touch 5000 Panel Battery - YouTube
Synergy Digital Alarm System Battery, Works with Honeywell Lynx Plus Alarm System, (Ni-MH, 7.2V, 700mAh) Ultra High Capacity, Compatible with Honeywell 300-06868 Battery - Walmart.com
300-03866 Battery for Honeywell Lynx 5100, 5200, 5210, Touch 7000 Alarm System 789185735227 | eBay
ZZcell® High Capacity Battery 300-03866 For Honeywell Alarm (3 Prong) 3700mAh | eBay