XTLplus Series Installation and Programming Guide | Digital Monitoring Products
4
Secondary Power Supply
Standby Battery
The XTLplus Series 800 mAh rechargeable battery is used to provide 4 hours of standby battery power when DC
power is not available. The battery is intended for backup power only and not to operate the panel on a daily basis. If
the battery is low, or not plugged into the BAT battery connector, a low battery condition is indicated by the panel. If
24-hour standby battery power is needed, connect the 3500 mAh battery. See Figure 3.
Note:
If removing the panel from service, disconnect the backup battery from the BAT connector.
Replacement
Use the following steps to replace the XTLplus Series standby battery. DMP recommends replacing the battery every
3 years under normal use.
1. Unplug the BAT battery connector from the XTLplus Series panel.
2. Loosen the top PCB snaps.
3. Lean the panel PCB forward and lift out from the bottom PCB snaps.
4. Remove and properly dispose of the used battery.
Caution:
Risk of fire, explosion, and burns. Do not disassemble, heat above 212° F (100° C), or incinerate. Properly
dispose of used batteries.
5. Place the new battery into the XTLplus Series housing base with the battery wires directed toward the bottom
left side. See Figure 3.
6. Set the XTLplus Series PCB into the bottom snaps and press into the top snaps to secure in place.
7. Plug the battery into the BAT panel connector.
Top PCB Snaps
Bottom PCB Snaps
Battery Connector
3.8 V 3500 mAh Rechargeable Battery
(required for 24 hour standby)
3.8 V 800 mAh
Rechargeable
Battery
Figure 3: Standby Battery Replacement
Battery Supervision
The panel tests the battery once every hour when DC power is present. This test occurs 15 minutes past each hour and
lasts for five seconds. A load is placed on the battery and if the battery voltage is low, a low battery is detected. If DC
power has failed, a low battery is detected any time the battery voltage falls below 3.7 V.