Hi,
My BBU is about 8 years old. I am getting a RED replace battery light but no audible alarm - system status is still green. When this happens, I loose both Fios TV and Internet service. When I remove the battery, there is still no service. I replaced the battery with a freshly charged battery (from reading the forum, I gather this is the responsibility of the homeowner) and all works good.
But after 8 hours I notice that the RED replace battery LED is on again, system status is still green, and I loose service again. When I remove the battery and test its voltage, it has dropped to 8 volts (Initially, it was at 13 volts.) I will try again with another new, freshly charged battery but if the BBU again drains the battery, will Verizon cover replacement of the BBU? There were no power outages so the unit has not needed to rely on the battery - note also that when I remove the battery completely and leave the AC plugged in, the red replace battery LED and the green system status LED both go off and there is no service,
Thanks for any insight into this issue.