Find out battery charge capacity in percentage using C# or .NET

Question

I have an application that gets detailed system information, and I have been able to get the percent of charge remaining but not the percent of the battery itself.

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Answer 1

BatteryChargeStatus.Text = SystemInformation.PowerStatus.BatteryChargeStatus.ToString(); 
BatteryFullLifetime.Text = SystemInformation.PowerStatus.BatteryFullLifetime.ToString();    
BatteryLifePercent.Text = SystemInformation.PowerStatus.BatteryLifePercent.ToString(); 
BatteryLifeRemaining.Text = SystemInformation.PowerStatus.BatteryLifeRemaining.ToString(); 
PowerLineStatus.Text = SystemInformation.PowerStatus.PowerLineStatus.ToString();

If you want to perform some operation just convert these string values into the integer.

Answer 2

Simple code to get Battery Level in C#

protected void batteryLevel ()
{
    var filter  = new IntentFilter(Intent.ActionBatteryChanged);
    var battery = RegisterReceiver(null, filter);
    int level   = battery.GetIntExtra(BatteryManager.ExtraLevel, -1);
    int scale   = battery.GetIntExtra(BatteryManager.ExtraScale, -1);

    double level_0_to_100 = Math.Floor (level * 100D / scale);

} 

Answer 3

WMI worked for me (tested on 3 notebooks of different brands), but I had to use something like this:

new ManagementObjectSearcher(@"\\localhost\root\wmi", 
        "Select FullChargedCapacity From BatteryFullChargedCapacity");
// use value of resultingInstance.Properties["FullChargedCapacity"]

new ManagementObjectSearcher(@"\\localhost\root\wmi",
        "Select DesignedCapacity From BatteryStaticData");
//use value of resultingInstance2.Properties["DesignedCapacity"]

Answer 4

No need to unnecessary complicate things. Try something like:

using System.Management;

PowerStatus pwr = SystemInformation.PowerStatus;

String strBatteryChargingStatus;
strBatteryChargingStatus = pwr.BatteryChargeStatus.ToString();
MessageBox.Show("battery charge status : " + batterystatus);

String strBatterylife;
strBatterylife = pwr.BatteryLifePercent.ToString();
MessageBox.Show("Battery life: "+batterylife);

In this way you can get all of the battery information.

Answer 5

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace batterie
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            showbattrie();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        public void showbattrie()
        {
            PowerStatus status = SystemInformation.PowerStatus;
            textBox1.Text = status.BatteryLifePercent.ToString("P0");
        }
    }
}

Answer 6

You can use the System.Windows.Forms.PowerStatus class - http://msdn.microsoft.com/en-us/library/system.windows.forms.powerstatus.aspx