| | |  | Lithium Batteries | Home » » » » ULTRA LIFE, 10 year, smoke alarm battery, U9VL-X | | | | | | | Description: | | Ultralife U9VL-XC Smoke Alarm 9 Volt Lithium Battery | | | Features: | |
• Upgrade all your smoke detectors to 10-year life with the only battery warranted for 10 years
• Reliable lithium battery keeps life-saving detectors energized for a full 10 years
• Eliminate the cost and inconvenience of yearly battery changes in your smoke detectors
• Forget all those low battery alarms that always seem to sound in the middle of the night
• A must for second homes where smoke detectors can fail when you're not there
| | | Product Details: | | | Product Length:
| 0.75 inches | | Product Width:
| 3.75 inches | | Product Height:
| 4.5 inches | | Product Weight:
| 0.1 pounds | | Package Length:
| 4.5 inches | | Package Width:
| 3.5 inches | | Package Height:
| 0.6 inches | | Package Weight:
| 0.1 pounds | | Average Customer Rating:
|  based on 41 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
 ( 41 customer reviews )
Write an online review and share your thoughts with other customers.
Most Helpful Customer Reviews
46 of 48 found the following review helpful:
 Ultralife 9-volt lithium battery life in smoke alarms and carbon monoxide detectorsNov 23, 2006
By Industry Expert
To clarify some of the other comments here, the Ultralife 9-volt lithium battery is designed to operate an ionization-type smoke alarm for 10 years. The packaging for the Ultralife U9VL-X 9-volt lithium battery indicates that it's a smoke alarm battery. It will not power a carbon monoxide (CO) alarm for 10 years since a CO alarm operates at a higher current drain than a smoke alarm. Also, the sensor in most CO alarms is designed to operate for 5 to 7 years depending on the brand and model, after which the entire alarm has to be replaced. While the Ultralife battery should outlast an alkaline battery in a CO alarm, and other devices, by 2 to 3 times, don't expect it to last 10 years in devices other than ionization smoke alarms.
24 of 25 found the following review helpful:
 10 Years - probably*Jun 23, 2007
By B. Lotze
* Assuming you have smoke detectors that are hardwired to AC, with battery backup (your 10 year cell). Since the AC will be running your detector 99% of the time, a long "shelf life" battery is just what you need to not mess with the dumb things too often. Although, be prepared to wedge the things in there - depending on your model this can be a tight squeeze. And taking it out if it was, may involve the use of vice type pliers.
38 of 43 found the following review helpful:
Lithium Batteries Are Good For High Ceiling Smoke AlarmsAug 29, 2006
By Craig S. Harrison
I can't comment on this particular battery, but I will comment on this subject generally. We have 7 smoke alarms in our house -- building code overkill. One of our ceilings is 14 feet high. There is much more danger that I will be seriously injured in falling off of a ladder by replacing that high ceiling battery once a year than I will be injured in a house fire. But no one thought of the big picture or asked me when they built my house. And when that high ceiling battery starts to chirp in the middle of the night because it is low, forget about getting any more sleep. And you will be in fine condition to climb a tall ladder in the morning.
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.
16 of 17 found the following review helpful:
 Did not work for meApr 30, 2008
By tommy
I have the an Ultralife 10 Year Smoke Detector Battery model U9VL-J. It has a use by date of 2017. The battery was installed in an ionization smoke detector on 07/05/2007. It was purchased 1-2 years before that. The detector just began giving the low battery warning on 4/30/2008. It did not even last a year. I generally get at least a year out of regular alkaline batteries in this detector. Maybe this battery is better suited to backup applications where the primary power source is house current.
11 of 11 found the following review helpful:
Works as advertised, depending on the type of smoke alarmMay 28, 2008
By Rev. Gary L. Coulter
I had 3 of these installed in smoke alarms in May 2003, so was disappointed when two of them failed after about 4 years, and the last one just began to beep after exactly 5 years.
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.
See all 41 customer reviews on Amazon.com
| | |
|
