Rated 3.4 out of 5Â by 27
Rated 5 out of 5Â by X1Y2Z3 A Fine Battery
This battery fits precisely in the spot where the previous battery sat. The mechanism (postal scale) had not been working since the similar previous battery went dead (after a long productive life) and now it is functioning once again. I expect that the planet will have become a rather different place in many ways by the time this battery completes its service.
March 1, 2014
Rated 2 out of 5Â by rge44 lasts from 1 to 3 years as battery backup in smoke detector
In June 2011, I installed these lithium batteries in all 8 of our electric wired smoke detectors in our house, functioning as battery backups. 1 died within 6 months, 4 died between 1 and 2 years, the rest died between 2 and 3 years, just replaced the last one that made it almost 3 years. They last as backup batteries a little longer on average than alkaline, but quality seems more variable, meaning some last even shorter than alkaline. In previous 5 years, had always 1x per year replaced all the alkaline batteries during same month, and never got beeping before 1 year is up.
The quality hence variable life should get better over time as the technology improves, but cost needs to come down to only 20% or more over alkaline batteries, because they simply dont last that much longer. Also they need to change the advertising to perhaps up to 3 years in smoke detectors. 8 of 8 dying in less than 1 to 3 years as battery backups in electric wired smoke detectors is no where near the marketed "up to 10 years". I am back to alkaline for now.
June 22, 2014
Rated 5 out of 5Â by Marco A needed item to complete a job
A battery that will last for 10 years is an excellent product for the smoke alarm I pruschased at Home Depot in Naples Florida.
June 24, 2014
Rated 4 out of 5Â by Keithk I am not sure yet of how long it will last, I'm still using it.
This is the first time I have purchased one of these Batteries. I'll know if it is truly worth the extra money when I see how long it lasts.
May 14, 2014
Rated 5 out of 5Â by Alex Lithium 9V Battery
Lithium 9V batteries last 3-5 times longer than alkaline 9V. It works pefectly for smoke alarms and music pedals. You may want to try the Ultralife 9V because it has 45% more juice than Energizer's 9V.
April 22, 2014