Honeywell VISTA: Clearing a "System Lo Bat" (deprecated, updated video in description) - YouTube
Amazon.com: Synergy Digital Alarm System Battery, Compatible with Honeywell 143553 Alarm System, (Ni-MH, 3.6V, 4500mAh) Ultra High Capacity, Replacement for Honeywell 143553 Battery : Electronics
Amazon.com: HQRP Battery Compatible with Honeywell K0257, GP80AAAH5BMX, 55111-05, 5800RP Wireless Repeater Alarm System Ademco : Electronics
Amazon.com: Synergy Digital Alarm System Battery, Compatible with Honeywell WLTP100 Alarm System, (Ni-MH, 7.2V, 700mAh) Ultra High Capacity, Replacement for Honeywell 300-06868 Battery : Health & Household