How To Replace Battery Verizon Fios Box. 3 days ago First disconnect the equipment and the cables that need to be returnedPlease note that any power supply units and AC adapter cords also need to be returnedNext carefully place all of the equipment being returned into the boxes you are using to. Disengage the locking tab on the battery connector and unplug it.
Unplug the battery wait a minute and plug it back in to silence the ONT unit for days to weeks. This link above should help. On new installs there is a Power Reserve Unit d cell batteries in a black case that can be switched on and off.
Disengage the retaining clip that holds the battery in place as well.
Disengage the locking tab on the battery connector and unplug it. Disengage the retaining clip that holds the battery in place as well. Remove the plug connector with the red and black cables by pinching and sliding it out of its location. The beeping is simply a warning that you need to replace the battery in order to have battery backup in case of a power outage.
