A wrapper class to provide battery information

BatteryHelper.java

import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;

import com.mobyta.mobilewebdashboard.ThisApplication;

public class BatteryHelper {

    private Intent mBatteryDataIntent;

    public BatteryHelper() {
        IntentFilter batteryLevelFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
        mBatteryDataIntent = ThisApplication.getInstance().registerReceiver(null, batteryLevelFilter);
    }

    public String getChargingMode() {
        switch (mBatteryDataIntent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1)) {
            case BatteryManager.BATTERY_PLUGGED_AC:
                return "AC Power";
            case BatteryManager.BATTERY_PLUGGED_USB:
                return "USB Cable";
            default:
                return "None";
        }
    }

    public String getChargingState() {
        switch (mBatteryDataIntent.getIntExtra(BatteryManager.EXTRA_STATUS, -1)) {
            case BatteryManager.BATTERY_STATUS_CHARGING:
                return "Charginig";
            case BatteryManager.BATTERY_STATUS_DISCHARGING:
                return "Discharging";
            case BatteryManager.BATTERY_STATUS_FULL:
                return "Full";
            case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
                return "Not Charging";
            default:
                return "Not Charging";
        }
    }

    public String getChargingPercentage() {
        int rawlevel = mBatteryDataIntent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
        int scale = mBatteryDataIntent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
        int level = -1;
        if (rawlevel >= 0 && scale > 0) {
            level = (rawlevel * 100) / scale;
        }
        return String.valueOf(level);
    }

    public String getBatteryHealth() {
        switch (mBatteryDataIntent.getIntExtra(BatteryManager.EXTRA_HEALTH, -1)) {
            case BatteryManager.BATTERY_HEALTH_COLD:
                return "Cold";
            case BatteryManager.BATTERY_HEALTH_DEAD:
                return "Dead";
            case BatteryManager.BATTERY_HEALTH_GOOD:
                return "Good";
            case BatteryManager.BATTERY_HEALTH_OVERHEAT:
                return "Over Heat";
            case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:
                return "Over Voltage";
            case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:
                return "Unspecified Failure";
            case BatteryManager.BATTERY_HEALTH_UNKNOWN:
                return "Unknown";
            default:
                return "Unknown Error";
        }
    }

    public String getTemperature() {
        return String.valueOf((mBatteryDataIntent.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, 0)) / 10);
    }

    public String getBatteryTechnology() {
        return mBatteryDataIntent.getExtras().getString(BatteryManager.EXTRA_TECHNOLOGY);
    }
}