If you have chosen the battery back up option, you will know when it’s time to replace the battery when the “Replace Battery” light appears on the nbn™ connection box. You will also hear an alarm sound – one beep every 15 minutes indicates the battery needs replacing, and four beeps every minute indicates less than half of the battery charge is remaining.
You can turn off the audible alarm sounds using the “Alarm silence” button. Press and hold the button to temporarily silence or re-enable the sounds for either 24 hours or longer.
Step 1: Purchase a new battery. You can find a list of battery retailers that stock compatible batteries here
Step 2: Replacing your battery: You can watch this quick Youtube video or follow these step by step instructions.
Turn off at the power point and disconnect the power supply from the mains power
Open the front cover of the Power Supply with Battery Backup
Disconnect the red ‘+’ plug from the battery
Push the tabs holding the battery, one above and one below, outward and then lift the battery out
Disconnect the black ‘–’ plug and remove battery
Step 3: Installing the new battery
Reconnect the black ‘–’ plug to the new battery
Push the battery retaining tabs outward and insert the battery into the Power Supply with Battery Backup
Reconnect the red ‘+’ plug to the new battery
Make sure the wires are not being pinched by the battery or front cover
Close the front cover and plug the power supply back into the power point and turn the power on.
The new battery will take 24 hours to completely charge. Please retain the old battery as a precaution during this time unless its charge was completely exhausted.
Please note, your broadband and/or phone service delivered over the nbn™ network will be unavailable while the battery is being replaced and for up to 10 minutes afterward.