in iOs isn't working properly

# Bug Report

## Problem
The plugging isn't working on iOS devices, the code haven't been update after 7 years

### What is expected to happen?

Its suppose to show the battery status

### What does actually happen?

Doesn't show anything, no even a simple console log in the function

## Information

node v12.16.1
npm 6.13.4
ionic CLI 6.0.2

### Command or Code

here my simple code
this.batteryStatus.onChange().subscribe(status => {
console.log("Estado Bateria");
console.log(status.level, status.isPlugged);
this.batteryText = status.level;
this.cdr.detectChanges();
});

### Environment, Platform, Device

- [X ] I searched for existing GitHub issues
- [ X] I updated all Cordova tooling to most recent version
- [ X] I included all the necessary information above

Start by reproducing the example on an iOS device and tracing the batteryStatus.onChange() entry point. No file or test is named; done means the callback runs and exposes the battery level and plugged state.

Written by the indexing model from the issue text.