Amazon.com: Battery Replacement for visonic PowerMaxComplete Control Panel Powermax Pro PowerMax Complete Alarm Contro 0-9912-G 100729 103-300672 GP130AAH6BMX GP180AAH8BMX GP220AAH8BMX (2000mAh/9.6V) : Health & Household
Visonic Powermax Bell Box Siren 0-9912-K replacement battery
Amazon.com: Synergy Digital Alarm System Battery, Compatible with Visonic PowerMax Complete Control Panel Alarm System, (Ni-MH, 7.2V, 1500mAh) Ultra High Capacity, Replacement for Visonic 103-300691 Battery : Electronics