what is the life expectancy,mine was 2 years old and first time I needed the backup battery to work it failed and it was original that came new with opener
1079433
Mine was 3 yrs old when I had to replace the battery. My other garage door opener is still going strong after 4 yrs on the original backup battery. Hit or miss I guess.
1079434
That's a hard question to answer. I don't think I ever needed mine to work----so the way I knew that it was bad was when the warning beeps started sounding. I think that was at about the 4-5 year mark. Did your system warn you that you had a bad battery, or you just went to use it and it wouldn't work? I guess the distinction is that I waited until the system told me the battery was bad before changing it. Maybe if I had tried to use it a year earlier, it wouldn't have worked???? Maybe the system lets the battery drain below the charge needed to open a door? I don't know. I think at least 4 years is what to expect. That's a hard question to answer. I don't think I ever needed mine to work----so the way I knew that it was bad was when the warning beeps started sounding. I think that was at about the 4-5 year mark. Did your system warn you that you had a bad battery, or you just went to use it and it wouldn't work? I guess the distinction is that I waited until the system told me the battery was bad before changing it. Maybe if I had tried to use it a year earlier, it wouldn't have worked???? Maybe the system lets the battery drain below the charge needed to open a door? I don't know. I think at least 4... » Read More That's a hard question to answer. I don't think I ever needed mine to work----so the way I knew that it was bad was when the warning beeps started sounding. I think that was at about the 4-5 year mark. Did your system warn you that you had a bad battery, or you just went to use it and it wouldn't work? I guess the distinction is that I waited until the system told me the battery was bad before changing it. Maybe if I had tried to use it a year earlier, it wouldn't have worked???? Maybe the system lets the battery drain below the charge needed to open a door? I don't know. I think at least 4 years is what to expect. « Show Less
171203
I bought and installed this battery. It is to the original battery and so far works like it's supposed to. Don't know about a warranty. I didn't read any of the package info. Who has time?
477877
Mine worked fine right away. Either check your batteries, or, if they are working fine, you have something wrong with your opener. Good Luck!
770588
Normally brand new batteries from Medtronic have a 5 year shelf life. When in a unit this time will probably be less due to use, as long as the unit shows it is okay the battery should be functioning normally
1593483
I looked at my package and at the remaining battery and neither one show an expiration date. My wife uses these in here garage door opener and they do seem to last several years even with heavy use.
448696
Looking at another website, it looks like it comes with a "No Hassle" 2 year replace my warranty. Hope that helps. This battery rocks!
810492
ours has worked great for a couple of years. it still has the original batteries in it.
1417082
I had a problem with mine when a piece of cork got stick inside. I pulled it out with pliers and that fixed it. With a previous opener the cork would not come out and I had to hold it with pliers while pushing the button. If the opener is slowing down and stopping when you push the up button then maybe the battery isn't charged. There were some complaints that the battery wasn't lasting very long so I disconnect it after charging and then use until the charge runs out. One charge is good for thirty or so openings. Some batteries develop a "memory" when left on the charger all the time and this can account for short life. If this is the case then you might need to replace the unit.
1788117
Sorry Greg, I threw the box away...along with the docs. It is made in China and even though it may have had a warranty on it, I doubt I could get service for it if it failed. Its not a high end, expensive one so I don't expect a whole lot out of it. It does work fine so far. Just swap out the factory battery for fresh ones and you should be good to go.
1623314
The battery is warranted against defects for two years to the original purchaser. The life expectancy is three to five years. I imagine the range of life expectancy depends on how often the battery is discharged and recharged. I have had mine in service since September 2013 and have run equipment on battery power on two occasions. According the readout on my UPS, the capacity of the battery is still just as new. The battery pack is made in the USA!
2177799
Do you mean 10 years? My Mom had her original for years and I think she somehow wore it down early. But it was still years. This puppy is working great so far. And at this price the battery is essentially free. :-)She was having reception/dropped calls issues. Her house is on a mountain. She said she thinks the connection is getting sketchier because of the battery not holding as much of a charge. I said I don't think so. Well we got this replacement battery and the call reliability seems a lot better. Go figure.
2138955
mine is all good since 2 years and isn't dead . Last 2 hours on power savor mode . the capacity is better than the original battery that the laptop came with which didn't last for 1 year and half .
1931859
When my original failed, it would only last 1-2 days as well. The replacement lasts 1 month+ but not sure of exact time.
57866
i haven't open the back to the battery ,but it still working good like the first day,but base on the description said;Long life Lithium battery inside, lasting over 2 years, that mean its, the battery can be replacable
1871705
I've had mine up for nearly a year, and the battery seems fine. I'm still using it nearly every day. This device is much like the one in your car, and only uses power when you press the button. How long does that battery last you? Has it left you stranded? There are no warning lights. I don't believe you'll have to reprogram when you change the battery. I'm sure Chamberlain built it so that it statically keeps your passcode and frequency codes on the printed circuit board.
725781
I don't exactly know. I bought it after I needed it so I haven't had to use the lifespan of a battery yet. It's nice though that it only needs 2... Sorry to not help more:)
1449984
It has a two year warrenty on it. For batteries. When they don't work call who makes it or throw it away .what ever you think is best