852-862 Battery Installation and Removal
The TG852 Telephony Gateway supports a Lithium-Ion backup battery to provide backup in the event of a local power loss. The battery backup is not intended to take the place of AC power.
Note: For safety and regulatory purposes, batteries are shipped outside of the Telephony Gateway and must be installed.
The TG852 supports the following battery models:
Basic backup battery — provides up to 5 hours (black) or 8 hours (grey) of backup time, depending on your Telephony Gateway model and usage. It may be light grey (recommended battery) or black.
Extended backup battery — provides up to 12 hours of backup time, depending on model and usage. It has a strap between the battery guides.
Basic Battery Installation and Replacement
Use this procedure to install and to replace the backup battery.
– Press down and pull back on the latch holding the battery door (on the bottom of the Telephony Gateway). Pull the door toward you. Set the door aside in a safe place.
– Hold the battery pack so that the guides on the battery align with the slots on the Telephony Gateway and slide the battery into the bay. The diagram on the left shows the proper orientation.
Note: Batteries will not insert completely into the Telephony Gateway if not oriented correctly. The battery should slide into the bay without significant force. Line up the guides on the battery with the slots in the battery bay.
– Push the battery pack into the bay until it seats into place. If you are taking the battery out of the Telephony Gateway, position your finger in the battery opening area and use leverage to dislodge the battery while pulling it straight back.
Note: The Telephony Gateway will not begin operating until you apply AC power.
– Replace the door. To do so, place the hinge tabs of the battery door into the receiver slots inside the Telephony Gateway battery compartment on the opposite end of the battery opening. Rotate the door toward the unit until the latch snaps back into place.
Note: Telephony Gateways use a Lithium-Ion battery pack. Please recycle or dispose of the battery responsibly and in accordance with local ordinances.