Get Laptop Battery Status using C# and WMI

using System.Management;

so that you can use of its classes . Now its simple to get information about laptop Battery through querying ManagementObjectSearcher Class .

We can get all information about Laptop Battery through Win32_Battery class.

so we need to query on that class to get related Management object and then we just need to get various properties related to it .

setup interface like below on the form

here i have taken two labels one textbox with read only property and one progress bar and a timer control .

now to get battery status we need to code like below .

Dictionary<UInt16, string> StatusCodes;

private void Form1_Load(object sender, EventArgs e)

{

StatusCodes = new Dictionary<ushort, string>();

StatusCodes.Add(1, "The battery is discharging");

StatusCodes.Add(2, "The system has access to AC so no battery is being discharged. However, the battery is not necessarily charging");

StatusCodes.Add(3, "Fully Charged");

StatusCodes.Add(4, "Low");

StatusCodes.Add(5, "Critical");

StatusCodes.Add(6, "Charging");

StatusCodes.Add(7, "Charging and High");

StatusCodes.Add(8, "Charging and Low");

StatusCodes.Add(9, "Undefined");

StatusCodes.Add(10,"Partially Charged");

/* Set progress bar values and Properties */

progressBar1.Maximum = 100;

progressBar1.Style = ProgressBarStyle.Continuous;

timer1.Enabled = true;

ManagementObjectSearcher mos = new ManagementObjectSearcher("select * from Win32_Battery");

foreach (ManagementObject mo in mos.Get())

{

lblBatteryName.Text = mo["Name"].ToString();

UInt16 statuscode = (UInt16)mo["BatteryStatus"];

string statusString = StatusCodes[statuscode];

lblBatteryStatus.Text = statusString;

}

}

private void timer1_Tick(object sender, EventArgs e)

{

ManagementObjectSearcher mos = new ManagementObjectSearcher("select * from Win32_Battery where Name='"+lblBatteryName.Text+"'");

foreach (ManagementObject mo in mos.Get())

{

UInt16 statuscode = (UInt16)mo["BatteryStatus"];

string statusString = StatusCodes[statuscode];

lblBatteryStatus.Text = statusString;

/* Set Progress bar according to status */

if (statuscode == 4)

{

progressBar1.ForeColor = Color.Red;

progressBar1.Value = 5;

}

else if (statuscode == 3)

{

progressBar1.ForeColor = Color.Blue;

progressBar1.Value = 100;

}

else if (statuscode == 2)

{

progressBar1.ForeColor = Color.Green;

progressBar1.Value = 100;

}

else if (statuscode == 5)

{

progressBar1.ForeColor = Color.Red;

progressBar1.Value = 1;

}

else if (statuscode == 6)

{

progressBar1.ForeColor = Color.Blue;

progressBar1.Value = 100;

}

}

}

Here i have used few status only to show in progress bar you can code whatever you want to show in progress bar..

Thank you :)