Not the longest lasting batteries
These aren't the longest lasting batteries but since they're rechargeable they still save money.  I bought these for my smoke detectors and all the batteries drained after about a year; all within about 3 days of each other.  I have a few of these batteries used elsewhere so once my detectors started chirping I pulled them from the non essential devices and charged then rotated them.  I then set a reminder with Alexa to remind me to swap the batteries after 150 days; this should keep them from draining too much and extend the life.
Rating: 4 stars