I'm having trouble getting my smoke detectors to report the correct battery level.
Device: First Alert ZCOMBO
I had been using the smoke detector for a short time prior to purchasing a Hubitat. So the batteries are relatively new. I just added the detector to my Hubitat Devices. Initially, the battery was reported as 100. Then I ran a test on the device, and now the battery is showing 1.
I found another topic that is similar, and their problem was solved by testing. Whereas it seems like mine was caused by it. Smoke/CO Alarm Battery Level Issue
I went ahead with @velvetfoot 's advice and swapped out the batteries for new. Now they are reporting 100%. Maybe the power cycling was what it needed.
The batteries themselves weren't rechargeable, and shouldn't have been anywhere near 1%. But into the drawer they go for a second home in a remote or mouse.