How To Change Fios Battery. Its just a backup to keep ONLY your land line working in case of a power outage. Unplug the battery wait a minute and plug it back in to silence the ONT unit for days to weeks.
A popular solution is to unplug the backup battery wait 60 seconds and then plug it back in. I installed this battery on our Verizon Fios equipment which uses this as a backup if our power goes out. Gently disengage the retaining clips that.
Remove the plug connector with the red and black cables by pinching and sliding it out of its location.
A tech-support note says that this battery usually lasts between 2 and 4. Follow these steps carefully when replacing the battery. Reseat the battery in the BBU. Press the silence button to quiet the ONT unit for 24 hours.
