Can I check iPhone, iPad, Watch battery on Mac?
[This is not a final answer as long as this line exists]

Assumptions I am making:


I am assuming you are on the latest version iOS and macOS.
You have the same account logged into the iPhone as well as Mac.


Even if you keep personal hotspot toggled off — unless you’re sharing your cellular connection with someone else — the latest versions of iOS and macOS still see available hotspots from devices with the same iCloud accounts enabled as part of Apple’s Continuity feature.

Here is how to see the Battery Percentage of your iPhone on a macOS system:


Make sure you have same iCloud account logged into iPhone and macOS device.
Turn on Wi-Fi from macOS.
Then click on the Wi-Fi icon on the menubar and wait for your iPhone to appear on the list. You can now see the graphical indicator of your iPhone’s battery level.
But if you want to know the precise percentage of your battery level follow further steps.
Hold on option key.
Then click on the Wi-Fi icon on the menubar.
This time when your hover pointer over the device, you should be able to see the battery percentage of iPhone.