Amazon.com: ZZcell Battery Replacement for GE Interlogix Simon Xti, XTi-5 Alarm Security System 600-XTI-BAT Wireless Control Panel 6V 2200mAh : Electronics
Amazon.com: 2500mAh Replacement Battery for GE Interlogix Simon XTi Wireless, GE Simon Xti, GE Simon XTi Control Panel : Electronics