ULTRA LIFE, 10 year, smoke alarm battery, U9VL-X
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Tools and Hardware Reviews of ULTRA LIFE, 10 year, smoke alarm battery, U9VL-X
Customer Review: Seems Good
Summary: 5 Stars
It works, but how do you review a 10 year battery after only a few months? All I can say is that I hope it keeps working for 10 years. I keep mine in a smoke detector in the attic, so it's certainly a convenient purchase.Customer Review: Still going after 6 years
Summary: 5 Stars
Bought seven of these (same mfg, different vendor) with smoke alarms which are designed for use with Lithium Batteries (BRK 9120 series I think). This was just about 6 years ago, and they are all still working.
Like other reviewers, I've got some tall ceilings, in one case 14' (upstairs bedroom to boot), and these are a lifesaver. No more tracking that 10' ladder up the stairs every 6-8 months banging it on every wall and corner.
Now they are wearing down (according to my Digital Voltmeter), but I won't hesitate to buy these again.
Customer Review: Time will tell
Summary: 4 Stars
After being woken up two nights in a row, I did some research on long life batteries for smoke detector alarms. The best price I could find was on amazon. I have replaced the batteries in all our smoke detectors with these. Now time will tell.Customer Review: Two years, not ten
Summary: 3 Stars
I bought one of these for use in a Kidde Nighthawk CO detector about two years ago. Two months ago the detector randomly started reporting "Lo Bat". (Took me a while to figure out what was going on because the low battery alarm only sounded for a couple of seconds once a night.)I've switched to using a standard 9V battery. While this battery may work fine in some applications, it clearly doesn't work well in everything that needs a battery backup source.
Customer Review: Ultra Long Life Battery
Summary: 5 Stars
I've been using one of these for about 5 years now. It just keeps on going and going and going....