Smart lighting floodlight battery and ring app

I have two of thesmart lighting floodlight battery which I installed in November, 2019. The batteries (Duracell purchased from Costco) have lasted about 5 months, which is less than expected. However, that is not why I'm writing. First is that I received no low battery warning from the app. Is there a setting that I need to activate or is this not a feature? Second, after replacing the batteries, battery strength did not immediately update. Rebooted my phone, still no change. Hours later, I looked again and it finally showed the new batteries. How long does it take for the app to display the neww battery strength? Thanks.