Get the remaining battery time available from an Android phone

Is it possible to get the remaining battery time available from an Android phone?

Thanks.

How do I check the health of my Samsung battery?

All you have to do to check your Galaxy phone or tablet's battery health is to open its Settings app, select Device Care, scroll down to the bottom and tap Diagnostics, then tap the Battery status option.

How do I check battery usage on Android 10?

Settings > Battery > Usage details Open Settings and tap on the Battery option.

There are a few apps (battery widgets and the like) that estimate time remaining before the battery runs out. I'd guess they take current battery level and try to work out current drain based on processor usage, backlight level etc. In my experience they aren't too accurate but in principle if you get the algorithm right it should be possible.