Most of the time I spend at the computer and I'm too lazy to reach for the smartphone to see notifications or battery status. Fortunately, you can show the battery level of the iPhone and other external devices on macOS.
This is autotranslated version of this post.
Batteries for Mac Widget displays the battery status of external iOS devices on Mac.
App ads a widget where you can display the battery level of any external devices. The only requirement is the ability to connect with a Mac via Wi-Fi Sync. So the Apple Watch won't work.
For each device, you can configure the warning about low battery. In this case, you will receive a notification.
You can install Batteries Widget on three computers with one license. Therefore, you can monitor the charge level at home and work.