Battery Storage Unit

The Battery Storage Unit (BSU) can be added to the Small Office, Home Office Optical Network Terminal (ONT) used to provide service to customers who subscribe to three or more voice lines. When the BSU with two fully charged 12-volt batteries is added to such an ONT with an existing battery backup equipped also with fully charged 12-volt batteries, you will have up to 24 hours of backup power for basic voice service, including calls to 911.

Note: Internet and TV service will not be available during a power outage even if a fully charged battery is installed. The BSU only provides backup power for voice service.

Note: All sales are final. You cannot return the Battery Storage Unit.

Learn about your unit

Accessing your battery
Understanding the lights and buttons
- Buttons
- Lights
Buttons

Lights
Do I need a battery backup for my service?
If you have a backup battery, and do not have voice service through Verizon, or if you do not need voice service during a power outage, you can disconnect the battery.
Monitoring and maintaining the battery
You are responsible for monitoring and maintaining your backup battery. Battery age, usage and temperature will impact battery life and performance so reducing the amount of time the batteries remain stored and unused is recommended.

Only 12-volt 8Ah sealed lead acid batteries should be used in the BSU. Batteries should be purchased just prior to replacement as12-volt batteries may not maintain their shelf life when stored.
Disconnecting and replacing the battery
If you have a backup battery, and do not have voice service through Verizon, or if you do not need voice service during a power outage, you can disconnect the battery.

Important: Before you begin, unplug the BSU power from your wall outlet.

Detach the velcro strap and the battery wire in the plug, pull and remove the 12v 8Ah lead acid battery.

Connect the power connector into the new battery terminal. Red connector is positive and black connector is negative.

Disconnect the power connector into battery terminal. Red connector is positive and black connector is negative.

Insert and place the 12v 8Ah lead acid battery. Attach the velcro strap and plug battery wire into the PSU socket

Fix battery issues

How to stop your backup battery unit from beeping
An alarm will sound once a minute to alert you if the battery in the battery storage unit (BSU) is not fully charged or has been drained completely.

To mute audible alarm for 24 hours, press and hold the blue button labeled "alarm silence" for 5 to 10 seconds.

Note: All batteries need to be installed for proper charging and backup.
How to Reset the Battery Storage Unit
To reset the ONT BSU, press and hold the blue button labled 'Alarm Silence' for 10 seoconds until the unit beeps 5 times and all the lights turn off. Release the button immediately. The unit will beep 5 additional times. In less than 60 seconds, all three lights on the unit will turn on for 5 seconds, then two of the lights will turn off and only the 'System Status' light will remain lit. This indicates that the ONT BSU has been reset and is ready to resume operation.

Note:: The reboot will temporarily disrupt all your Fios services and take between 3 to 5 minutes to complete.
Experiencing other issues with the battery ?
Use our Guided Solutions Tool to resolve troubles you may be experiencing with loss of power to the battery backup unit or silencing the beeping alarm. You can also be guided through steps on how to replace and dispose of the battery.

Fix Issues

Have an old battery?

How to purchase a new battery
You can purchase a new battery from Verizon by visiting verizon.com/accessories or you may purchase
one from a third-party vendor. If you choose to purchase your replacement battery from a third-party vendor,
please make sure that you are purchasing a 12-volt 8.0 Ah SLA (Sealed Lead Acid) battery.

Buy battery now

Note: Only 12-volt 8.0 Ah sealed lead acid batteries should be used in the battery backup unit. Batteries should be purchased just prior to replacement as 12-volt batteries may not maintain their shelf life when stored.
How to dispose of your old battery
When replacing your battery, please make sure to dispose of your old battery properly. For more information about recycling, you can contact Call2Recycle at 1.877.RECYCLE (1.877.273.2925) or visit call2recycle.org to find a list of the drop-off locations closest to you. You may also visit http://www.ehso.com/ehshome/batteries.php or call the EPA at 202.272.0167 for instructions. Your local municipality may also have information about proper disposal of batteries.

Battery Storage Unit

Learn about your unit

Accessing your battery

Understanding the lights and buttons

Do I need a battery backup for my service?

Monitoring and maintaining the battery

Disconnecting and replacing the battery

Fix battery issues

How to stop your backup battery unit from beeping

How to Reset the Battery Storage Unit

Experiencing other issues with the battery ?

Have an old battery?

How to purchase a new battery

How to dispose of your old battery

Need more support?