ULTRA LIFE, 10 year, smoke alarm battery, U9VL-X
|
List Price: Our Price: $5.00 You Save: $2.95 (37%) Availability: Usually ships in 24 hours Buy Used: from $4.29 (click here) Category: Tools See more product details |
|---|
Tools and Hardware Reviews of ULTRA LIFE, 10 year, smoke alarm battery, U9VL-X
Customer Review: 10 year batteries;
Summary: 5 Stars
The are great batteries and they do last 10 years in your smoke alarms and an excellant price.Customer Review: 10 year claim is valid
Summary: 5 Stars
The title of this item is incorrect. It's actually U9VL, not UPVL. Apparently the 10 year claim is valid for the U9VL-J battery (that's the same battery Amazon is selling here). Here's a thorough study where they validated it:
[...]
Customer Review: 2 Years Tops
Summary: 2 Stars
I'll echo what others have said. This lasts longer than an alkaline battery, but you are unlikely to get 10 years from this battery. I used this battery in my smoke detector and I doubt it was in use for over 2 years.Customer Review: 3 year 13 day battery life in my Firex dual sensor (ionization/photoelectric) smoke detector
Summary: 3 Stars
3 year 13 day battery life in my Firex dual sensor (ionization/photoelectric) smoke detector
If you read the fine print in their 10 year warranty; it is valid for an ionization detector only. But since I want protection against both fast burning and slow smothering fires,I want a dual sensor.
A 3 pack of Duracells are about the same price
Customer Review: Battery double-talk
Summary: 1 Stars
Lithium batteries excel with the lowest rate of internal leakage of any type of battery. This means that they will retain at least 80% of their charge during STORAGE for more than ten years. However, when used to OPERATE a device such as a smoke detector, a single lithium battery will slightly outlast two of the same size alkaline batteries. Claims for greater than 2X lithium versus alkaline battery endurance are based on non-typical use in extreme temperatures, and/or unrealistic comparison with obsolete zinc-carbon battery technology.
Nonetheless, certain expensive "10 yr" smoke detectors embody a special, NON-REPLACEABLE, large capacity lithium battery which has given seven years' service so far, in my experience.