APC RBC2, GT12080, and PX12072 Compatible Battery - Genuine VICI Brand

Yup, it's a battery. In my opinion, a battery has 2 goals. It works or it doesn't. It lasts or it doesn't. I bought this because it was a compatible replacement for the original issue battery that came in my Verizon Fios digital phone power interface box. If I loose AC power from my utility company, this little gem powers my phone service for some amount of hours. The original battery lasted for years but Verizon does not replace them when, not if, they go kaput. Even though the equipment belongs to them. I guess it's like the batteries in the remote philosophy. To be honest, I have no idea if this is a rechargeable battery or if the added up amount of time I am without power will eventually drain this battery too. There is no written word on the Verizon device that mentions a trickle charge to a supposed rechargeable battery so who's to say... not Verizon, they don't even know. BUT, the battery is doing great. The green light on the device that shows the battery is happily charged and waiting a power loss scenario is lit and all is well. Only time will tell :)Oh, and I should mention the Verizon price was 3 times as expensive as this one which was, thank you Amazon, the lowest price.

Bought this in Jan of 2015. Thought it would last at least 2 years but it's dead 1 year and 4 months into it's life.....haven't lost power many times in that timeframe so not sure if I got a defective one or what.

Bought in August of 2016, now already dead and its only Dec 2016

This vs what was installed by vender is night and day. Verizon's worked about a week, was checked a week after installed, half power. This one after a month is still full power and with house electric killed this powers the wireless phone system very well.

Very short live! Lasted for a couple of months only, watch out!

Lasted only 15 months, not the 3-5 years as advertised.

Have only had this for a month or so, but it has worked without any problem. It's WAY cheaper than letting Verizon rip you off for the same battery at twice the price.

Excellent shipping. Totally compatible with FIOS unit.Update: Seller provided after the sale advice on the FIOS unit the resulted in determining that the FIOS unit was faulty, not their battery.