When you look up "rechargable" batteries, these are highlighted. When you go through it's information, they show a whole page of rechargable batteries, but these are not! Deceptive

I'm not sure how these would last in different applications but I had one last 2 months in a Smoke Alarm.Not sure if it's just a bad battery or their design.....

I tried these Lithium 9v batteries for my numeric keypad deadbolt locks, hoping that they would last longer than alkaline. Nope. They quit working much sooner than the Duracell and Energizer that I previously used. I started writing the date installed on the battery, so I would know for sure how long they lasted. I just changed out the last Lithium battery. It lasted just short of 2 months. Also, when the battery gets low on power, my deadbolt flashes acted warning light. With theses, I may only have 5 more entries, before it quits working. With the alkaline, I had at least a week. I won't buy these for this application again.