Add the package to your react-native project in the following way
npm install --save react-native-ene-battery
Or
yarn add react-native-ene-battery
Link the current package to your react native project
react-native link react-native-ene-battery
import Battery from 'react-native-ene-battery'
componentWillMount() {
Battery.getBatteryPercentage((batteryLevel) => {
console.log(batteryLevel)
})
}
For any problems and doubt raise an issue.