I used to use an app called battery Notifier BT Free, which did just that—the only thing I wanted--and not much else. Unfortunately, the app was discontinued and the last version no longer works on Android 14, which is what I’m running on my Samsung S23+ phone. A couple of months ago, I tried two apps, Battery Alarm and Battery Guru. I can’t remember why I quickly uninstalled Battery Alarm, but I do remember that Battery Guru was so complicated that I couldn’t figure out how to set a low-battery alert. (I eventually received a reply from their support team telling me how to do it, but had uninstalled it as too resource-heavy anyway.) Can anyone recommend a simple app that will do the trick?