Bests & Worsts Reviews from Amazon

I got this battery to replace the original one in my indoor FiOS unit. The battery lasted 2 1/2 years before the FiOS unit constantly beeped even with the unplugging/plugging trick. But the battery has a new home in my APC UPS (ES-550) and is still working at least as of today. The UPS has needed a new battery for a few months (its beeping can be silenced) so I decided to put in this battery that the FiOS unit deemed unworthy. This battery is definitely worth the cost but it would be nice for it to last longer in the FIOS unit considering it just sits there not powering anything. Update 7/12/17: I changed my rating to 5 stars. Recently I had to replace the newer battery in my FIOS unit (it lasted only 20 months this time) but the older battery (almost 4 years old now) is still working in my APC just fine. I'm not sure how the FIOS unit goes through batteries so fast but I can't fault the battery for that.