Thank you for your contribution.

Could you elaborate more on what is going on? Didn't understand from your description what is wrong there.

@rostopira Could you reply to ☝🏻 ?

@vbuberen sorry, missed previous comment.

There is a steps to reproduce a bug

import 'package:battery_plus/battery_plus.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  final batteryState = await Battery().batteryState;
  print(batteryState);
}

If you run it on iOS without my patch you will get BatteryState.unknown instead of the real battery state.
It may be reproducible on macOS as well, but I didn't tried that.

But if you call await Battery().batteryLevel before reading batteryState it will work as expected.
That's because reading battery level read implementation has device.batteryMonitoringEnabled = YES; and battery state doesn't.
I've just added those missing lines, check the code it's really only 3 lines.

Thanks a lot for detailed explanations and reproducer. I was even able to reproduce the problem in the example app we have for the plugin. And indeed your patch works. Approving and will release this fix the upcoming week.

On MacOS couldn't get the same bug, so it seems applies only to iOS.