|Item Weight||0.3 ounces|
|Product Dimensions||2.1 x 1.2 x 0.6 inches|
|California residents||Click here for Proposition 65 warning|
|Item model number||LA522|
|Item Package Quantity||1|
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Energizer LA522 9V Industrial Lithium Battery for Smoke Detectors
|Price:||$8.15 & FREE Shipping on orders over $49. Details|
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Top Customer Reviews
The mah capacity of this device (at low current drain) is 750. For the alkaline, 600. So it lasts just a little longer in use.
There are 2 types of smoke detectors. One is wired into the house, and only uses the battery for backup when the power is off. For this application, the lithium should last about twice as long. Well worth the trouble of getting out a ladder.
The other kind of detector runs off of the battery. This is the detector you added to a room without doing any wiring. For this case, you might as well use a alkaline. It's going to last about the same.
This is a great battery for backup applications. Especially where hard to get to. Don't confuse loaded and unloaded life.
If manufactured correctly, these should last longer than any other type of battery.
Did not work as advertised in my smoke/carbon monoxide detectors.
I'm rating this battery 3 stars instead of 1, because I'll give Energizer the benefit of the doubt and assume that the batch I ordered was defective. At any rate; my reason for purchasing these batteries was so that I wouldn't have to change them as often as I was doing so in my smoke/carbon monoxide detectors. I have 5 of these detectors in my house, and when using regular alkaline batteries, found that they were lasting between 18 - 24 months. Since I have very high ceilings; it made sense to purchase a battery that would last significantly longer than the alkaline ones.
The batteries that I received, had an expiration date of 08/2020. I placed them in 4 of my smoke/carbon monoxide detectors and installed a regular alkaline in the 5th. To my surprise, 2 of the lithium batteries failed after just 10 months, while the alkaline one continued to work. Now, after 18 months, the remaining 2 lithium batteries as well as the alkaline battery are working fine. I replaced the other 2 detectors with alkaline batteries and they continue to work perfectly.
The bottom line is that lithium batteries should last a lot longer than alkaline ones. In my case, 2 of the lithium batteries died prematurely, while the other ones continue to function just fine.Read more ›
I would suggest comparing your old battery's measurements to the ones listed on this product, if you're buying this as a replacement battery.
Most Recent Customer Reviews
Energizer Bunny.... These are still working and have been for quite a while it is not being used in anything that requires a lot.... But they do last really long. Read morePublished 2 days ago by Michael
Hoping for ten years? Try a little over 2.5 years. That was my experience in installing these batteries throughout my home in a Kidde KN-COSM-1B combination Smoke/CO alarm. Read morePublished 2 months ago by Kindle Customer
Replaced the batteries in my alarms with these as the prior batteries died. The first one of these dies in 2 years 7 months.Published 5 months ago by Gary S