The specs say it is rechrgeqable. How? If it has a life of 3 to 5 years, doesn't that mean it is just depleted and cannot be recharged?
1688754
Phillyphil, the description of "3 to 5 years" doesn't mean that it has that amount of electricity supplied. This battery is very much like a car battery. You can use some, or all, of it's electricity when your power goes out and when the power comes back on it recharges back up. It will live this way for 3 to 5 years. When it finally dies, it will need to be replaced. Engineer David
1688755
The FIOS unit that this battery goes into is pluged into a wall outlet, not only does the power supply inside the unit power the FIOS it also charges this battery. Slowly after 3 to 5 years of use the internal chemistry of the battery goes bad and it doesn't accept a charge anymore just like your car battery. I hope this answers your question.
1688756
Odd question - Do you understand what a rechargeable battery is? The battery doesn't get charged from the factory (like an alkaline cell) and then run for 3-5 years; a rechargeable is being recharged constantly during its working life. Even rechargeable batteries have a lifespan before they fail.
1688757
My uneducated guess (also a philly person!) is that they can only be recharged by Verizon. Does that make any sense? I never asked Verizon. I just wanted to save time and money so ordered on Amazon.
1688758
This is a lead acid battery just like a car battery, except it is sealed better. It constantly charged, unless your house looses wc power. Just like your car battery, even though it stays mostly charged, it still looses strength after a few years. These batteries are supposed to keep your phone service working fora few hours, should you loose commercial ac power.
1688759
I don't have the technical expertise to respond--except to say when the power goes out, I think you get 8 hours off the battery--when the electric is restored, I believe the battery recharges. I can tell you the original battery installed by Verizon started beeping (indicating it needed replacement) after a year. The one I purchased through Amazon has only beeped when the power fails. So far, so good.
1688760
This is a backup battery for the main FIOS system. If the electricity in your house goes out, this battery will keep the FIOS system running for a period of time. While the house electrical system is on, the battery receives a continuous trickle charge to keep it fully charged. As I've been told by certain electrical engineers that I know, rechargeable batteries can only be recharged (or trickle charged) so much or so many times when their current capacity is drained, and then they go bad. I hope that helps.
528068
Don´t know how long you´ve been using it for. If it is 1-2 yrs max with a minor-moderate usage I suggest you contact the manufacturer. I did it once at the beginning and they provided a great/quick service. If you´ve used it for several years then you have to understand that all batteries have a life. Maybe you´ve drained it a few times and it´s over now.
1752135
It is rechargeable. It is a lithium ion battery like a cordless drill. It states that it will stay charged for up to a year but I try to charge mine whenever I think about it. Usually about once a quarter.
39736
Unfortunately no, it is not rechargable. Look at it like a modern day boom box. Batteries in, batteries out.
461799
You can't access the battery so it isn't replaceable. However, if its like most rechargeable batteries, you should be able to recharge them hundreds of times. I usually recharge mine weekly, so it should last a long, long time.
259342
You have to let it die or get it to shut off. There is a pin hole in the back to that you can sick a pin or paper clip in to reset. But if I remember right I had to let it die and recharge for a long time. Like a day.
1572952
I've only had to recharge it 3 times in 8 months, but I think It'll last for many years. It's a great product. Amazing!!
482213
I guess you need to let it fully recharged, I use it once a week and had no problem.
1507612
I've only had it for a week, so no battey problems yet. It lasts my whole 10-hour work day on a full charge. There aren't any instructions included abot replacing the battery, but it looks like someone else responded and said it IS user-replaceable. Li-ion should last for years, but good battery maintenance will help extend the life. For at least the first 10 cycles, I charge it fully, then drain it completely. Don't recharge when it drops to 80%, 60%, etc. The performance doesn't suffer at all even when it is almost dead. That should help you get the most life and best performance.
1285283
It is rechargable. I have never left it uncharged for more than a few hours.
1924696
Even though the battery is rechargeable we all know they all degrade and lose the ability to recharge. It does not appear they made this watch to be able to change the battery is the back plate is screwed together with some pretty tiny screws. I'm sure there's a You Tube video out there that shows how to take the thing apart and disconnect wires and stuff to get to it but I'm sure that would void the warranty. It's good for two years though. Better than most.That's the way companies do it anymore. They want you to have to buy a new item when the battery loses the ability to recharge. Even though the battery is rechargeable we all know they all degrade and lose the ability to recharge. It does not appear they made this watch to be able to change the battery is the back plate is screwed together with some pretty tiny screws. I'm sure there's a You Tube video out there that shows how to take the thing apart and disconnect wires and stuff to get to it but I'm sure that would void the warranty. It's good for two years though. Better than most.That's the way companies do it anymore. They want you to have to buy a new item when the battery loses the ability to... » Read More Even though the battery is rechargeable we all know they all degrade and lose the ability to recharge. It does not appear they made this watch to be able to change the battery is the back plate is screwed together with some pretty tiny screws. I'm sure there's a You Tube video out there that shows how to take the thing apart and disconnect wires and stuff to get to it but I'm sure that would void the warranty. It's good for two years though. Better than most.That's the way companies do it anymore. They want you to have to buy a new item when the battery loses the ability to recharge. « Show Less
344469
The battery is designed to last for several years, and then get replaced. It does not get recharged.
343924
It's rechargeable so you can plug it in when it's dying. My battery lasts 3 hours at the most. It might be a defective one, or that might be normal. I am not sure about that at this point.
1914909
No it is not rechargeable. If it is plugged in and it is not turning then it is broken.
1105015
It is totally rechargeable, but when it runs down and shuts off, you need to charge it but not turn it on for a bit. Then UN plug it to turn it back on. Otherwise works great
216451
Hi, it is not rechargeable. However, It's easy to replace the battery. -Anthony
1507614
I've only had it for a week, so no battey problems yet. It lasts my whole 10-hour work day on a full charge. There aren't any instructions included abot replacing the battery, but it looks like someone else responded and said it IS user-replaceable.Li-ion should last for years, but good battery maintenance will help extend the life. For at least the first 10 cycles, I charge it fully, then drain it completely. Don't recharge when it drops to 80%, 60%, etc. The performance doesn't suffer at all even when it is almost dead. That should help you get the most life and best performance.