Backup Battery Connection; Initial Power-Up Sequence - Honeywell AlarmNet 7845i-GSM Installation And Setup Manual
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Internet Communication Module 7845i-GSM Installation and Setup Guide
Backup Battery Connection
The included battery (K14139) and battery cable (K14138LF) are used for backup in the
event of a system power loss.
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Install the battery as follows, and refer to the Summary of Connections diagram at the end of
this document.
1. Place the battery inside the case back.
2. Snap the right side of the battery clip onto the inside of the case back and secure the
3. After all wiring connections have been made, connect the red and black battery
1. Do not plug the battery in until all wiring connections have been made and you are ready
to power up the 7845i-GSM.
2. If using a LynxR-I, do not connect the module's backup battery. The LynxR-I backup
battery will supply backup power in the event of a power outage.
Initial Power-Up Sequence
Before connecting power, check that the following have been completed:
• Terminal block TB1 V+ and GND terminals are connected to the control panel's auxiliary
power output: 12VDC nominal.
• Battery is installed.
• Apply power. Initially, all 7845i-GSM programming options are set to the factory default
settings.
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The battery can provide over 24 hours of system life in the event of a power failure.
A programmable power loss message can alert the AlarmNet Control Center when
system power is lost (power loss messages are reported within 1-3 hours of actual
loss).
The module transmits a low-battery message (programmable) when the battery
reaches 5.7V ±5%, indicating subsequent message may not be transmitted.
The system shuts down when the battery reaches 5.1V, and radio transmissions are
no longer possible.
If system power is restored before the module shuts down, a power-on restore
message is sent within 1-3 hours after power is restored, and the battery is recharged
using the 7845i-GSM's built-in battery charger. If system power is restored after the
7845i-GSM has shut down, a power-on reset condition exists, the module initializes
itself and the battery will recharge.
left side with the screw provided.
cables to the battery terminals. Connect battery cable to connector J1.
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