|Item Weight||2.1 ounces|
|Product Dimensions||0.8 x 3.8 x 4.5 inches|
|Item model number||U9VL-X|
|Batteries||1 Lithium ion batteries required.|
|Item Package Quantity||1|
|Warranty Description||10 Year|
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ULTRA LIFE, 10 year, smoke alarm battery, U9VL-X
|Price:||$8.72 & FREE Shipping|
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Top Customer Reviews
Lithium batteries should last 5-7 years, so that means I subject myself to falling from a ladder to one-fifth or one-seventh as often compared to regular batteries. Just be careful. Radio Shack makes Lithium batteries, but they are larger than normal 9 volt batteries and might not fit into your device.
They all came with Ultralife Lithium Power Cell batteries.
The smoke detectors all have stickers on them that say "10 year Lithium Battery".
I would assume that since they actually put the sticker directly on the battery compartment of the smoke alarm that they were not talking about a 10 year shelf life or storage life. All 6 of the Ultralife Power Cell Batteries failed and lost their charge in less than 3 years. All of them were sounding low battery beeps in hallways keeping condominium residents awake at night, resulting in multiple phone calls and complaints.
They were used in a dry, warm and normal atmosphere.
First Alert should change their Adds to read "10 year Warranty" but
absolutely not a "10 year battery"!
I think this is an embarrasment to the First Alert company to connect the
Ultralife name to any of their products.
But then I discovered that the alarms I'm using have dual sensors (First Alert SA301), containing both an ionization and a photoelectric [these are not hard-wired, the battery does it all]. Therefore, if in reality, the batteries are running two detectors at once, I guess it shouldn't surprise me that they lasted half as long as advertised. Also, my alarm doesn't qualify for the 10 year warranty, because it contains a photoelectric sensor - the warranty is for ionization sensors only.
Cost wise it's probably a wash, one could buy several alkalines for the cost of this one. But the savings is on time: not having to change the batteries as often.
Most Recent Customer Reviews
i use these in my smoke detectors,now in my outside key pad,time will tellPublished 4 days ago by Randall E. Cook
Brought for and had shipped to my sister for her CO2 alarm and she is very happy.Published 1 month ago by Retired_Born_In_1944
Not too many places carries this brand, great product...this is what I neededPublished 2 months ago by Edwin
I have yet to get anywhere near 10 years out of these things using them in ionizing smoke detectors. Read morePublished 4 months ago by Amazon Customer
This is my second time to use 10-year batteries in all the smoke alarms in the house. The first 10-year batteries lasted 7 years but we have a lot of lengthy power outages which... Read morePublished 4 months ago by CallMePicky
Love it. No more beeping from low batteries every time you turn around. I have three alarms, and it seems one is always beeping from low batteries. Read morePublished 5 months ago by Bonnie C Chumney
The batteries are just as described, a "plus" and a "minus" police. Inserted thyem in my fire extinguishers, which I tested. Read morePublished 5 months ago by Gerry