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Energizer LA522 9V Industrial Lithium Battery for Smoke Detectors

4.5 out of 5 stars 76 customer reviews
| 5 answered questions

Price: $8.15 & FREE Shipping on orders over $49. Details
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  • 10 year shelf life
  • Wide operating range
  • High energy density
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$8.15 & FREE Shipping on orders over $49. Details Only 8 left in stock. Sold by Supernova Audio and Media and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Energizer LA522 9V Industrial Lithium Battery for Smoke Detectors
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Total price: $38.16
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Product Description

Recommended for smoke alarms, professional audio and medical devices. 10 year shelf life. Wide operating range. High energy density . Non-hazardous solid waste

Product Information

Technical Details

Part Number LA522
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
Size 9V
Power Source battery-powered
Voltage 9 volts
Item Package Quantity 1
Certification No
Batteries Included? Yes
Batteries Required? Yes

Additional Information

ASIN B0046TV5VO
Customer Reviews
4.5 out of 5 stars 76 customer reviews

4.5 out of 5 stars
Best Sellers Rank #48,667 in Home Improvements (See top 100)
#69 in Electronics > Accessories & Supplies > Batteries, Chargers & Accessories > Household Batteries > 9V
Shipping Weight 0.3 ounces (View shipping rates and policies)
Date First Available February 12, 2010

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By J. Melanson on March 5, 2014
Verified Purchase
The self life of this battery is rated at 10 years. The shelf life of a standard alkaline is rated at 5 year. So it's twice a long lived if you don't draw any current.
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.
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While lithium batteries are supposed to last significantly longer than alkaline ones; this failed to be the case when I used these batteries in my smoke/carbon monoxide detectors.

Pros:
If manufactured correctly, these should last longer than any other type of battery.

Cons:
Very expensive.
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 ›
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We had purchased two combination smoke alarm and carbon monoxide detectors for our home. After installing them, one started chirping and announcing a "low battery" condition within three days. I swapped the location of the two detectors, but the problem followed the detector. I assumed that the supplied battery was defective so I read the smoke alarm literature and replaced it with a recommended battery (brand and model). After three days, the chirping and "low battery" announcements began again. Unsure about the shelf-life of the replacement battery, I purchased some new recommended batteries only to be faced with the same chirping and "low battery" announcement within three days. After reading some of the reviews on the Amazon site, I decided to give the Energizer Lithium batteries a try. It has been over a month now since I installed them and have not had a repeat issue of the chirping and "low battery" announcement. I even went so far as to put one of the old batteries back in the detector after a week of peaceful operation to see if the chirping and "low battery" announcement returned ... it did. For me, this battery solved the problem.
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Replaced these with the Alkaline batteries that came with Smoke Detector and the Carbon Monoxide detector i installed recently. Have heard good reviews from friends about these Lithium batteries. Its been working for them for almost 3 years without a single replacement.
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I bought 10 of these with new smoke detectors for the house. All the detectors are hardwired into AC power so these are simply for backup. We have had zero power outages since these were installed. 4 of the 10 have failed at 18 - 24 months. Basically for a much higher cost I am getting the same life as traditional Alkaline batteries. I would not buy these again
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I expected long life and already one has failed after a few weeks service. I hope the others last longer than the less expensive batteries. The last one died on March 6th 2014. Not what I expected. I will try Maxell.
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This battery is larger than most other 9V batteries. I bought it for my smoke detector, but it was slightly too big to fit.

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.
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Great item, fit my smoke detector perfectly. No problems with installation. I did check and the battery registered 9.8 volts on my battery tester.
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