12V 7.2Ah Universal Power Group PX12072 F2 Battery with F2 Terminals

Trecia: It arrived earlier than promised (great since I was finally able to stop the annoying beeping from the Verizon box) and it's working perfectly so far as a FIOS battery replacement. Be sure to check details before ordering since terminal type and overall dimensions differ among listings for seemingly identical batteries. (Measuring my old battery showed that I needed the slightly larger F2 terminals.) The overall size differed a bit from the OEM battery but the replacement slipped into the Verizon box just fine. Only time will tell whether there will be an longevity issue as cited by others.

United States on Mar 18, 2013

Nelson Lathrop: I bought this replacement battery for my FiOS a little over 10 months (May 9, 2012). The backup unit started beeping, etc. so I found a "good" replacement. It shipped quickly and fit perfectly, but unlike my original FiOS backup battery, which lasted years... this one is already dead. I will spend a little more this go-around and buy a better rated battery.

United States on Feb 15, 2013

Barry Apple: Verizon doesn't provide batteries even though they charge me over $235 a month for service. I bought this battery online for under $18 delivered and it arrived in a few days via UPS. So far no problem, Quick and easy and less expensive. Thank you Amazon.

United States on Nov 26, 2012

Fast Eddie: This battery seemed to be fairly priced. It was delivered in a timely manner and was easy to install in my Verizon FiOS Optical Network Terminal (ONT) as a backup power supply for digital voice phone service in case of power outage. The only negative experience is that battery lasted less than five months before weakening to point where alarm goes off every few minutes until battery is replaced. I recently discovered chargers for these batteries and will likely opt to give that a try before purchasing another battery. (Not sure why Verizon doesn't have some kind of trickle charger built into system since battery is not used until there is an outage.)

UPDATE: I wish I had better researched this before buying a replacement & disposing of original battery. Instead of buying a charger specifically for this battery, I removed it from the system and recharged it with my Schumacher battery charger on 2-amp Slow Charge setting (a gentle trickle charge for charging and maintaining small batteries). After returning to 100%, reinstalled and working fine. Will continue to monitor battery for its ability to hold charge & overall life.

United States on Oct 29, 2012

Abby403: This battery does not have F2 terminals. They are F1, and two small converters change the F1 to F2. One converted quickly and easily, the other took some work and pliers. I would have prefered a battery with F2 terminals as this one was described, as I specifically did NOT order a battery with converters. Be careful when you unwrap the package, the converters are small and just loose in the wrapping - took a while to find the second one. But the battery fits and works well, just wish it was as described.

United States on May 16, 2012