Total Battery Capacity in mAh of device Programmatically

Question

I have tried powerprofile of Android....I have tried this code...but it gives me 1000 answer every time in all the devices... Is there any other way in android to get battery capacity... Eg.if mobile device capacity is 2000mAh it should return me 2000

public Double getBatteryCapacity() {

        Object mPowerProfile_ = null;
        double batteryCapacity = 0;
        final String POWER_PROFILE_CLASS = "com.android.internal.os.PowerProfile";
        try {
            mPowerProfile_ = Class.forName(POWER_PROFILE_CLASS)
                    .getConstructor(Context.class).newInstance(this);

        } catch (Exception e) {

            // Class not found?
            e.printStackTrace();
        }

        try {

            // Invoke PowerProfile method "getAveragePower" with param
            // "battery.capacity"
            batteryCapacity = (Double) Class.forName(POWER_PROFILE_CLASS)
                    .getMethod("getAveragePower", java.lang.String.class)
                    .invoke(mPowerProfile_, "battery.capacity");

        } catch (Exception e) {

            // Something went wrong
            e.printStackTrace();
        }

        return batteryCapacity;
    }

Unconquerable

possible duplicate of Android get battery current capacity in mA and total capacity of battery in mAh – Donor

Ranjith but it is not working that's why i posted this...Can u help me ? – Unconquerable

possible duplicate of Android : Is there anyway to get battery capacity of a device in mah? – Estrogen

You should use "getBatteryCapacity" method, not the "getAveragePower" method of the PowerProfile class. – Collage

Answer 1

For those users interested in the implementation of the @Yehan suggestions, here is a method that return the total battery capacity: (only for API Level >= 21)

public long getBatteryCapacity(Context context) {
   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        BatteryManager mBatteryManager = (BatteryManager) context.getSystemService(Context.BATTERY_SERVICE);
        Integer chargeCounter = mBatteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CHARGE_COUNTER);
        Integer capacity = mBatteryManager.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);

        if(chargeCounter == Integer.MIN_VALUE || capacity == Integer.MIN_VALUE)
            return 0;

        return (chargeCounter/capacity) *100;
    }
    return 0;
}

Unfortunately, for some reason this approach doesn't always work. In those cases, you can use Java's Reflection APIs to retreive the value returned by getBatteryCapacity method of com.android.internal.os.PowerProfile :

public double getBatteryCapacity(Context context) {
    Object mPowerProfile;
    double batteryCapacity = 0;
    final String POWER_PROFILE_CLASS = "com.android.internal.os.PowerProfile";

    try {
        mPowerProfile = Class.forName(POWER_PROFILE_CLASS)
                .getConstructor(Context.class)
                .newInstance(context);

        batteryCapacity = (double) Class
                .forName(POWER_PROFILE_CLASS)
                .getMethod("getBatteryCapacity")
                .invoke(mPowerProfile);

    } catch (Exception e) {
        e.printStackTrace();
    }

    return batteryCapacity;

}

Source: https://android.googlesource.com/platform/frameworks/base/+/a029ea1/core/java/com/android/internal/os/PowerProfile.java

Collage

Can I get the value of Current flow through JAVA api? – Heterochromatin

As far as I know, i think there is not a way to get the value of the Current flow. But i suggest you to search in the internals of the AOSP for something so specific. Maybe i'm wrong. I would start from here: android.googlesource.com/platform/frameworks/base/+/master/… – Collage

The first solution crashes my app java.lang.SecurityException: uid *** does not have android.permission.UPDATE_DEVICE_STATS. Adding it to manifest says that "Permission is only granted to system apps". – Automobile

First solution is using a standard API, however it never produces the same results. At 59% capacity, the actual remaining mAh capacity will slowly drop, hence total capacity will slowly drop as well and jump higher on next %. Second solution is grey-listed for now and may be removed by Google at any time. – Gemagemara

Answer 2

You can use following properties of android.os.BatteryManager. BATTERY_PROPERTY_CHARGE_COUNTER which gives you the remaining battery capacity in microampere-hours. BATTERY_PROPERTY_CAPACITY which gives you the remaining battery capacity as an integer percentage.

So,

BATTERY_PROPERTY_CHARGE_COUNTER / BATTERY_PROPERTY_CAPACITY * 100

would give you the Total Battery Capacity. This would not be the precise calculation but you will be able to close the actual capacity.

References: https://source.android.com/devices/tech/power/index.html#device-power http://developer.android.com/reference/android/os/BatteryManager.html

Geyser

Its only available to android 5.0 not for lower version. – Unconquerable